<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.2 20190208//EN" "http://jats.nlm.nih.gov/publishing/1.2/JATS-journalpublishing1.dtd"><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" article-type="systematic-review" dtd-version="1.2" xml:lang="en">
    <front>
        <journal-meta>
            <journal-id journal-id-type="pmc">F1000Research</journal-id>
            <journal-title-group>
                <journal-title>F1000Research</journal-title>
            </journal-title-group>
            <issn pub-type="epub">2046-1402</issn>
            <publisher>
                <publisher-name>F1000 Research Limited</publisher-name>
                <publisher-loc>London, UK</publisher-loc>
            </publisher>
        </journal-meta>
        <article-meta>
            <article-id pub-id-type="doi">10.12688/f1000research.146583.1</article-id>
            <article-categories>
                <subj-group subj-group-type="heading">
                    <subject>Systematic Review</subject>
                </subj-group>
                <subj-group>
                    <subject>Articles</subject>
                </subj-group>
            </article-categories>
            <title-group>
                <article-title>A systematic review evaluating the efficacy of treadmill training in geriatric care as an intervention for improving balance and reducing fall risks in elderly population</article-title>
                <fn-group content-type="pub-status">
                    <fn>
                        <p>[version 1; peer review: 2 approved with reservations]</p>
                    </fn>
                </fn-group>
            </title-group>
            <contrib-group>
                <contrib contrib-type="author" corresp="no">
                    <name>
                        <surname>Zafer</surname>
                        <given-names>Ayman Mohammed Ismail</given-names>
                    </name>
                    <role content-type="http://credit.niso.org/">Conceptualization</role>
                    <role content-type="http://credit.niso.org/">Data Curation</role>
                    <role content-type="http://credit.niso.org/">Investigation</role>
                    <role content-type="http://credit.niso.org/">Methodology</role>
                    <role content-type="http://credit.niso.org/">Project Administration</role>
                    <role content-type="http://credit.niso.org/">Supervision</role>
                    <role content-type="http://credit.niso.org/">Visualization</role>
                    <role content-type="http://credit.niso.org/">Writing &#x2013; Original Draft Preparation</role>
                    <xref ref-type="aff" rid="a1">1</xref>
                </contrib>
                <contrib contrib-type="author" corresp="no">
                    <name>
                        <surname>Shanb</surname>
                        <given-names>Alsayed Abdelhameed</given-names>
                    </name>
                    <role content-type="http://credit.niso.org/">Conceptualization</role>
                    <role content-type="http://credit.niso.org/">Funding Acquisition</role>
                    <role content-type="http://credit.niso.org/">Investigation</role>
                    <role content-type="http://credit.niso.org/">Methodology</role>
                    <role content-type="http://credit.niso.org/">Project Administration</role>
                    <role content-type="http://credit.niso.org/">Validation</role>
                    <role content-type="http://credit.niso.org/">Writing &#x2013; Original Draft Preparation</role>
                    <uri content-type="orcid">https://orcid.org/0000-0002-4878-5025</uri>
                    <xref ref-type="aff" rid="a2">2</xref>
                </contrib>
                <contrib contrib-type="author" corresp="no">
                    <name>
                        <surname>Alzahrani</surname>
                        <given-names>Matar AbduAllah</given-names>
                    </name>
                    <role content-type="http://credit.niso.org/">Conceptualization</role>
                    <role content-type="http://credit.niso.org/">Formal Analysis</role>
                    <role content-type="http://credit.niso.org/">Project Administration</role>
                    <role content-type="http://credit.niso.org/">Resources</role>
                    <role content-type="http://credit.niso.org/">Writing &#x2013; Original Draft Preparation</role>
                    <xref ref-type="aff" rid="a2">2</xref>
                </contrib>
                <contrib contrib-type="author" corresp="no">
                    <name>
                        <surname>Sharma</surname>
                        <given-names>Ankita</given-names>
                    </name>
                    <role content-type="http://credit.niso.org/">Conceptualization</role>
                    <role content-type="http://credit.niso.org/">Formal Analysis</role>
                    <role content-type="http://credit.niso.org/">Investigation</role>
                    <role content-type="http://credit.niso.org/">Methodology</role>
                    <role content-type="http://credit.niso.org/">Resources</role>
                    <role content-type="http://credit.niso.org/">Writing &#x2013; Original Draft Preparation</role>
                    <xref ref-type="aff" rid="a3">3</xref>
                </contrib>
                <contrib contrib-type="author" corresp="yes">
                    <name>
                        <surname>Rizvi</surname>
                        <given-names>Moattar Raza</given-names>
                    </name>
                    <role content-type="http://credit.niso.org/">Conceptualization</role>
                    <role content-type="http://credit.niso.org/">Data Curation</role>
                    <role content-type="http://credit.niso.org/">Formal Analysis</role>
                    <role content-type="http://credit.niso.org/">Investigation</role>
                    <role content-type="http://credit.niso.org/">Methodology</role>
                    <role content-type="http://credit.niso.org/">Supervision</role>
                    <role content-type="http://credit.niso.org/">Validation</role>
                    <role content-type="http://credit.niso.org/">Writing &#x2013; Review &amp; Editing</role>
                    <uri content-type="orcid">https://orcid.org/0000-0001-8424-7163</uri>
                    <xref ref-type="corresp" rid="c1">a</xref>
                    <xref ref-type="aff" rid="a3">3</xref>
                </contrib>
                <aff id="a1">
                    <label>1</label>Physical Therapy Department, Taibah University, Medina, Al Madinah Province, 41411, Saudi Arabia</aff>
                <aff id="a2">
                    <label>2</label>Physical Therapy Department, Imam Abdulrahman Bin Faisal University, Dammam, Eastern Province, 34212, Saudi Arabia</aff>
                <aff id="a3">
                    <label>3</label>Department of Physiotherapy, School of Allied Health Sciences, Manav Rachna International Institute of Research and Studies, Faridabad, Haryana, 121004, India</aff>
            </contrib-group>
            <author-notes>
                <corresp id="c1">
                    <label>a</label>
                    <email xlink:href="mailto:rajrizvi@gmail.com">rajrizvi@gmail.com</email>
                </corresp>
                <fn fn-type="conflict">
                    <p>No competing interests were disclosed.</p>
                </fn>
            </author-notes>
            <pub-date pub-type="epub">
                <day>23</day>
                <month>4</month>
                <year>2024</year>
            </pub-date>
            <pub-date pub-type="collection">
                <year>2024</year>
            </pub-date>
            <volume>13</volume>
            <elocation-id>330</elocation-id>
            <history>
                <date date-type="accepted">
                    <day>26</day>
                    <month>3</month>
                    <year>2024</year>
                </date>
            </history>
            <permissions>
                <copyright-statement>Copyright: &#x00a9; 2024 Zafer AMI et al.</copyright-statement>
                <copyright-year>2024</copyright-year>
                <license xlink:href="https://creativecommons.org/licenses/by/4.0/">
                    <license-p>This is an open access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p>
                </license>
            </permissions>
            <self-uri content-type="pdf" xlink:href="https://f1000research.com/articles/13-330/pdf"/>
            <abstract>
                <sec>
                    <title>Background &amp; Purpose</title>
                    <p>Falls and balance issues are significant concerns for the elderly. Treadmill training is increasingly recognized as a potential intervention to improve balance and reduce fall risk in this population. This systematic review evaluates the effectiveness of treadmill training on balance in the elderly.</p>
                </sec>
                <sec>
                    <title>Methods</title>
                    <p>A comprehensive search was conducted in databases including MEDLINE, EMBASE, CINAHL Plus, PEDro, Cochrane Library, and ERIC from January 1, 1980, to May 31, 2023. The search focused on treadmill training&#x2019;s impact on balance in older adults. From 74 identified studies, outcome measures were categorized into groups like &#x201c;Balance Improvement,&#x201d; &#x201c;Gait Improvement,&#x201d; &#x201c;Mobility Enhancement,&#x201d; &#x201c;Muscle Strength Improvement,&#x201d; &#x201c;Cognitive Function and Quality of Life,&#x201d; and others. Articles were excluded for reasons like irrelevance to treadmill training, language barriers, or duplication, resulting in 16 final studies.</p>
                </sec>
                <sec>
                    <title>Results</title>
                    <p>Treadmill training shows diverse positive effects on the elderly. Perturbation-based training reduces falls, and treadmill walking enhances balance and quality of life, particularly in institutionalized older individuals. Benefits were noted for Parkinson&#x2019;s patients&#x2019; gait, cognitive changes in neurophysiology, fitness and mobility improvements through underwater treadmill sessions, and refined gait in hemiparetic patients.</p>
                </sec>
                <sec>
                    <title>Conclusion</title>
                    <p>Treadmill training interventions are promising for improving balance and mobility in the elderly, including those with Parkinson&#x2019;s disease, spinal cord injuries, and age-related balance issues. While these interventions show potential, further research is needed to determine optimal protocols, durations, and combinations with other interventions. This could lead to a more comprehensive approach for addressing balance and mobility challenges in the elderly, promoting healthy aging and reducing fall risks.</p>
                </sec>
            </abstract>
            <kwd-group kwd-group-type="author">
                <kwd>Elderly</kwd>
                <kwd>balance</kwd>
                <kwd>treadmill training</kwd>
                <kwd>falls prevention</kwd>
                <kwd>aging</kwd>
            </kwd-group>
            <funding-group>
                <funding-statement>The author(s) declared that no grants were involved in supporting this work.</funding-statement>
            </funding-group>
        </article-meta>
    </front>
    <body>
        <sec id="sec1">
            <title>Background</title>
            <p>As the global population of older adults and elderly individuals continues to rise, there is a growing emphasis on innovative approaches to enhance their well-being, with a particular focus on addressing the challenges of aging. The aging population presents a unique set of opportunities and challenges, and by embracing innovative solutions, we can transform the aging experience, prolong vitality, and usher in a new era of longevity and well-being (
                <xref ref-type="bibr" rid="ref43">Rudnicka et al., 2020</xref>; 
                <xref ref-type="bibr" rid="ref3">Amuthavalli Thiyagarajan et al., 2022</xref>; 
                <xref ref-type="bibr" rid="ref34">Officer and de la Fuente-N&#x00fa;&#x00f1;ez, 2018</xref>). Some key areas of innovation in addressing the challenges of aging include genetic therapies and stem cell regeneration, which hold great potential for improving health and function in older adults, potentially reversing age-related declines and promoting a more youthful state (
                <xref ref-type="bibr" rid="ref16">Garay, 2023</xref>; 
                <xref ref-type="bibr" rid="ref30">Negredo et al., 2020</xref>). Additionally, artificial intelligence and wearable technology can be used to monitor and manage health, providing valuable data for healthcare professionals and individuals to make informed decisions about their well-being (
                <xref ref-type="bibr" rid="ref52">Wang and Hsu, 2023</xref>; 
                <xref ref-type="bibr" rid="ref6">Bohr and Memarzadeh, 2020</xref>; 
                <xref ref-type="bibr" rid="ref4">Bajwa et al., 2021</xref>). Virtual reality technology offers a wealth of opportunities for the aging population, enabling them to engage in stimulating activities, travel to distant places, and socialize with others, regardless of physical limitations, thus promoting mental well-being and combating feelings of isolation and loneliness (
                <xref ref-type="bibr" rid="ref9">Chaze et al., 2022</xref>; 
                <xref ref-type="bibr" rid="ref24">Lin et al., 2018</xref>). Aging in place strategies focus on enhancing the safety and quality of life for older adults in their home environment, allowing them to participate in valued activities and maintain their independence.</p>
            <p>One of the most promising areas of development is the field of exercise interventions, notably treadmill training. This approach is gaining traction as a means to counteract the age-related declines in physical function, balance, and mobility that significantly influence the quality of life and independence of older individuals (
                <xref ref-type="bibr" rid="ref7">Brach and VanSwearingen, 2013</xref>; 
                <xref ref-type="bibr" rid="ref51">VanSwearingen et al., 2011</xref>). Treadmill training for the elderly is particularly advantageous because it can be tailored to individual needs and physical capabilities. It offers a safe and controlled environment for exercise, which is crucial for those with diminished balance or mobility. Regular use of the treadmill can lead to improvements in balance and coordination, thereby reducing the risk of falls, a common and serious concern among the elderly (
                <xref ref-type="bibr" rid="ref33">Oddsson et al., 2007</xref>). Additionally, treadmill exercises are beneficial for cardiovascular health, helping to keep the heart healthy and potentially reducing the risk of heart-related diseases, which are more common in older age (
                <xref ref-type="bibr" rid="ref10">Chen et al., 2022</xref>; 
                <xref ref-type="bibr" rid="ref48">Tian and Meng, 2019</xref>; 
                <xref ref-type="bibr" rid="ref38">Pinckard et al., 2019</xref>; 
                <xref ref-type="bibr" rid="ref41">Rebelo-Marques et al., 2018</xref>). Moreover, engaging in treadmill workouts can help maintain or increase muscle strength and bone density, countering the natural decline that accompanies aging. This type of physical activity is also associated with mental health benefits, including a reduction in symptoms of depression and anxiety, which are significant issues for many older adults (
                <xref ref-type="bibr" rid="ref22">Izquierdo et al., 2021</xref>; 
                <xref ref-type="bibr" rid="ref55">Zhu et al., 2023</xref>). Another aspect of treadmill training that makes it suitable for older populations is its customizability. Treadmill exercises can be adjusted in terms of speed, incline, and duration to match the individual&#x2019;s fitness level and physical limitations. This adaptability, combined with the safety features of modern treadmills, like safety rails and emergency stop mechanisms, ensures a safe workout environment.</p>
            <p>In addition to physical benefits, treadmill training can also offer social benefits, especially when conducted in group settings such as classes or gym environments. It provides an opportunity for social interaction and engagement, which is important for the mental health and overall well-being of older adults. Furthermore, the integration of technology in modern treadmills, including heart rate monitors and personalized training programs, allows for more tailored and monitored exercise sessions, enhancing both safety and efficacy (
                <xref ref-type="bibr" rid="ref45">Shepherd et al., 2015</xref>; 
                <xref ref-type="bibr" rid="ref40">Prichard and Tiggemann, 2008</xref>). However, it is critical that any exercise regimen, including treadmill training, be developed in consultation with healthcare professionals. This ensures that the exercises are not only beneficial but also safe, particularly for those with pre-existing health conditions. A personalized approach ensures that the older adults reap the maximum benefits from their exercise routines without compromising their health. The growing interest in the geriatric population&#x2019;s health and well-being is evident in the expanding research on treadmill training&#x2019;s potential benefits for older adults and the elderly (
                <xref ref-type="bibr" rid="ref27">McPhee et al., 2016</xref>). This research recognizes the complex interplay of physiological, neuromuscular, and psychological factors unique to this age group. These factors play a crucial role in how older adults respond to various interventions, including exercise (
                <xref ref-type="bibr" rid="ref12">de Souto Barreto et al., 2016</xref>; 
                <xref ref-type="bibr" rid="ref35">Paterson et al., 2007</xref>).</p>
            <p>Treadmill training, as a focused research area, has been the subject of numerous studies that span different years, geographical locations, and demographic profiles. These studies are not just limited in scope; they encompass a broad range of objectives and outcomes. One of the key areas of investigation is the impact of treadmill training on postural stability in the elderly. This aspect is crucial because maintaining a good postural balance is fundamental to performing everyday activities and reducing the risk of falls, which are a significant health concern in this age group (
                <xref ref-type="bibr" rid="ref36">Pereira et al., 2020</xref>, 
                <xref ref-type="bibr" rid="ref37">2021</xref>; 
                <xref ref-type="bibr" rid="ref21">Hirjakov&#x00e1; et al., 2020</xref>).</p>
            <p>Another important research focus is the effect of treadmill training on gait patterns (
                <xref ref-type="bibr" rid="ref31">Newell et al., 2012</xref>; 
                <xref ref-type="bibr" rid="ref2">Almutairi, 2023</xref>; 
                <xref ref-type="bibr" rid="ref50">van Ooijen et al., 2013</xref>; 
                <xref ref-type="bibr" rid="ref53">Wnuk et al., 2010</xref>). As people age, their walking patterns can change, often becoming slower and less steady. These changes in gait can lead to an increased risk of falls and injuries. Treadmill training can potentially help in modifying these gait patterns, leading to safer and more efficient walking. Additionally, researchers are examining how treadmill training influences the rate of falls among the elderly (
                <xref ref-type="bibr" rid="ref49">van Ooijen et al., 2016</xref>). Falls are not only a leading cause of injury in older adults but also contribute to a fear of falling, which can significantly reduce their activity levels and quality of life. By improving balance, strength, and gait through treadmill training, there is a possibility of reducing the incidence of falls, thus enhancing the overall safety and independence of the elderly (
                <xref ref-type="bibr" rid="ref8">Cadore et al., 2013</xref>; 
                <xref ref-type="bibr" rid="ref26">Marsh et al., 2006</xref>). Moreover, the psychological impacts of treadmill training are also a subject of study. Regular physical activity has been associated with improvements in mood, cognitive function, and general mental well-being. For the elderly, these psychological benefits are as important as the physical ones, considering the high prevalence of depression, anxiety, and cognitive decline in this age group (
                <xref ref-type="bibr" rid="ref1">Afifi et al., 2023</xref>; 
                <xref ref-type="bibr" rid="ref14">Dorfman et al., 2014</xref>). The diversity of these research studies reflects the multifaceted nature of aging and the need for a comprehensive approach to health and wellness in the geriatric population. By exploring various outcomes and considering the unique challenges faced by older adults, these studies contribute significantly to our understanding of how best to support the health and well-being of the elderly through targeted interventions like treadmill training.</p>
            <p>The focus of this systematic review is to delve deep into the myriad of studies on treadmill training for older adults, aiming to synthesize and consolidate the diverse findings into a coherent understanding. This undertaking recognizes that understanding the mechanisms behind the observed outcomes in these studies is critical for fully realizing the potential benefits of treadmill training for the elderly. Treadmill training, with its unique ability to simultaneously engage both motor and cognitive systems, presents a promising avenue for holistic geriatric care. However, the diversity in research methodologies and outcomes necessitates a careful and comprehensive analysis to identify meaningful patterns and insights. This review, therefore, meticulously examines various aspects of the studies, including intervention protocols, study designs, and outcome measures. The goal is to identify commonalities and trends that transcend individual studies, thereby providing a more comprehensive understanding of treadmill training&#x2019;s role in geriatric healthcare.</p>
            <p>A crucial aspect of this review is the acknowledgment of the intricate relationship between physical activity and cognitive function in aging. The cognitive benefits of physical exercise, particularly in an aging population, are an area of growing interest. Treadmill training, by demanding both physical and cognitive engagement, could potentially enhance cognitive function alongside physical health, offering dual benefits to the elderly. Furthermore, this review traverses the historical landscape of treadmill training research, encompassing a broad spectrum of studies that have investigated its physiological, psychological, and social impacts. These studies have been conducted over a range of years and across various geographical and demographic contexts, adding to the richness and diversity of the data. By examining these studies, the review aims to unravel not only the direct impacts of treadmill interventions on aspects such as balance, gait, and fall risk but also their broader implications for promoting active aging, sustainable geriatric care, and community engagement.</p>
            <p>By providing a comprehensive synthesis of these studies, this systematic review aspires to inform the development of targeted treadmill training interventions that are specifically designed to meet the needs of older adults. These interventions could potentially improve balance, reduce the risk of falls, and promote overall health and well-being in the elderly population. The ultimate goal of this endeavor is to contribute to a more nuanced and holistic approach to geriatric care, one that recognizes and utilizes the multifaceted benefits of treadmill training to enhance the quality of life for older adults and the elderly. The insights gleaned from this review could have significant implications for healthcare providers, policymakers, and caregivers, guiding them in making informed decisions about incorporating treadmill training into comprehensive care plans for the elderly.</p>
            <p>In this systematic review, we are setting out to explore several key aspects that are critical to understanding the full scope and impact of treadmill training on older adults. These aspects are designed to provide a comprehensive overview of the subject, addressing the nuances and complexities inherent in geriatric care and exercise interventions.
                <list list-type="order">
                    <list-item>
                        <label>1.</label>
                        <p>
                            <bold>Types of interventions</bold>: A crucial part of this review is the analysis of different treadmill training protocols. The aim here is to discern which specific elements of these protocols are most effective in improving balance in older adults. This analysis will consider various factors, such as the intensity, duration, and frequency of exercise, as well as the incorporation of additional equipment like body weight support systems. The goal is to identify the most beneficial practices that can be applied broadly to improve balance and reduce fall risks among the elderly.</p>
                    </list-item>
                    <list-item>
                        <label>2.</label>
                        <p>
                            <bold>Population heterogeneity</bold>: Recognizing that the older adult population is extremely diverse, the review will pay special attention to how different subgroups respond to treadmill training. This includes examining the experiences of individuals with varying levels of physical fitness, health conditions, and cognitive abilities. A key question is whether treadmill training is more effective or beneficial for certain subgroups, such as those with preexisting medical conditions or varying degrees of mobility impairment. Understanding these differences is crucial for tailoring interventions to meet the specific needs of different segments within the elderly population.</p>
                    </list-item>
                    <list-item>
                        <label>3.</label>
                        <p>
                            <bold>Outcome measures</bold>: The review will rigorously assess a wide range of outcome measures to capture the full impact of treadmill training. This includes evaluating both static and dynamic balance, changes in gait parameters, overall mobility, incidence of falls, and improvements in the quality of life. By analyzing these diverse outcomes, the review aims to construct a holistic picture of how treadmill training affects various aspects of an elderly individual&#x2019;s health and daily living.</p>
                    </list-item>
                    <list-item>
                        <label>4.</label>
                        <p>
                            <bold>Methodological rigor</bold>: Assessing the methodological quality of the studies included in the review is essential to determine the strength and reliability of the evidence. This involves examining each study for potential biases, methodological flaws, and limitations. This critical evaluation will provide insights into how trustworthy and applicable the results are, and will highlight areas where further research may be needed to confirm findings or fill in gaps in the current understanding.</p>
                    </list-item>
                </list>
            </p>
            <sec id="sec2">
                <title>Inclusion and exclusion criteria</title>
                <p>To ensure the systematic review&#x2019;s primary focus on investigating the effectiveness of treadmill training in enhancing balance among the elderly population, a rigorous set of inclusion and exclusion criteria was meticulously crafted. The ensuing inclusion criteria were judiciously employed to discerningly choose studies for comprehensive analysis:</p>
            </sec>
            <sec id="sec3">
                <title>Inclusion criteria</title>
                <p>The review concentrated on studies encompassing individuals aged 60 years and above, thereby ensuring a dedicated examination of the elderly population. The central theme was the investigation of treadmill training interventions and their potential impact on balance improvement within this demographic. The selection criteria demanded that studies exclusively present quantitative outcomes germane to balance assessment. To attain a comprehensive perspective, the review encompassed an array of study designs, ranging from rigorous randomized controlled trials (RCTs) and non-randomized trials to observational designs such as cohort studies, cross-sectional studies, and case-control studies. The scope of the review was confined to studies published in the English language.</p>
            </sec>
            <sec id="sec4">
                <title>Exclusion criteria</title>
                <p>In a bid to maintain precision, studies targeting populations other than the elderly, such as individuals aged below 60, were deliberately excluded from the review. Likewise, studies appraising interventions beyond treadmill training for balance enhancement were not deemed pertinent for inclusion. Studies that failed to provide pertinent outcomes related to balance assessment were excluded to uphold the review&#x2019;s integrity. Editorial pieces, opinion articles, systematic reviews, and meta-analyses were meticulously excluded to keep the focus on primary research. The purview of the review deliberately excluded abstracts, dissertations, and conference presentations, ensuring the consideration of only comprehensive research reports. Studies solely scrutinizing within-session effects of varying walking conditions were purposely omitted. Furthermore, review articles straying from the core subject matter&#x2014;treadmill training&#x2019;s role in improving balance among the elderly&#x2014;were scrupulously excluded.</p>
                <p>The systematic review purposefully excluded studies solely concentrating on within-session effects of different walking conditions to offer a more comprehensive view of treadmill training&#x2019;s sustained efficacy. Additionally, review articles that did not align with the specific outcomes of interest&#x2014;namely, the influence of treadmill training and body weight supported gait training on balance improvement among the elderly&#x2014;were meticulously excluded to uphold research relevance.</p>
                <p>Furthermore, the review remained constrained to studies accessible via peer-reviewed journals, containing full-text versions in the English language. It embraced research encompassing diverse study designs, irrespective of the approach employed. However, studies presented solely as abstracts or dissertations were intentionally omitted from consideration. Likewise, studies narrowly probing the within-session effects of diverse walking conditions were deliberately omitted. Finally, review articles addressing tangential subjects were deliberately excluded.</p>
                <p>By diligently implementing these stringent inclusion and exclusion criteria, the systematic review aimed to curate a selection of studies closely aligned with the research objectives, eliminating those deviating from the predefined scope. This approach was meticulously tailored to deliver an exhaustive and precise evaluation of the impact of treadmill training on balance improvement within the elderly population.</p>
            </sec>
        </sec>
        <sec id="sec5">
            <title>Search strategy</title>
            <sec id="sec6" sec-type="methods">
                <title>Methods</title>
                <p>For this systematic review, a comprehensive search strategy was meticulously developed to identify relevant studies that investigated the effectiveness of treadmill training on balance improvement in the elderly population. The following approach was employed to ensure the systematic retrieval of pertinent literature: Identification of Key Concepts: The search strategy began by identifying key concepts essential to the review&#x2019;s focus: &#x201c;treadmill training,&#x201d; &#x201c;elderly population,&#x201d; and &#x201c;balance improvement.&#x201d; Keyword Formulation: To enhance search precision, specific keywords were formulated for each concept. These keywords were carefully selected to encompass various aspects of the concepts. Treadmill Training: &#x201c;treadmill training,&#x201d; &#x201c;treadmill exercise,&#x201d; &#x201c;gait training,&#x201d; &#x201c;treadmill intervention&#x201d; Elderly Population: &#x201c;elderly,&#x201d; &#x201c;older adults,&#x201d; &#x201c;seniors,&#x201d; &#x201c;geriatric population&#x201d; Balance Improvement: &#x201c;balance improvement,&#x201d; &#x201c;postural stability enhancement,&#x201d; &#x201c;balance training,&#x201d; &#x201c;gait stability&#x201d; Boolean Operator Combination: The formulated keywords were logically combined using Boolean operators (AND, OR) to create comprehensive search strings that captured the interrelation of the key concepts. (Treadmill Training OR Treadmill Exercise OR Gait Training OR Treadmill Intervention) AND; (Elderly OR Older Adults OR Seniors OR Geriatric Population) AND; (Balance Improvement OR Postural Stability Enhancement OR Balance Training OR Gait Stability); Inclusion of Controlled Vocabulary: To enhance the search strategy&#x2019;s robustness, controlled vocabulary terms (MeSH terms in PubMed) were incorporated alongside the keywords to account for database-specific indexing; (&#x201c;Exercise Therapy&#x201d;[Mesh] OR &#x201c;Gait&#x201d;[Mesh] OR &#x201c;Postural Balance&#x201d;[Mesh]) AND; (&#x201c;Aged&#x201d;[Mesh] OR &#x201c;Aged, 80 and over&#x201d;[Mesh] OR &#x201c;Elderly&#x201d;[Mesh]) AND; (&#x201c;Treatment Outcome&#x201d;[Mesh] OR &#x201c;Rehabilitation&#x201d;[Mesh] OR &#x201c;Physical Therapy Modalities&#x201d;[Mesh]).</p>
            </sec>
            <sec id="sec7">
                <title>Adapting the strategy for different databases</title>
                <p>The search strategy was tailored for various databases, ensuring compatibility with their syntax and controlled vocabulary. For Embase, Emtree terms like &#x201c;Motor Activity&#x201d; and &#x201c;Gait&#x201d; were incorporated. In CINAHL, CINAHL Headings were utilized in conjunction with relevant keywords, catering to the nursing and allied health literature. The Cochrane Library was targeted for systematic reviews and clinical trials on treadmill training and balance improvement in the elderly. Additionally, for Scopus, a combination of database-specific keywords and controlled vocabulary was utilized to achieve a comprehensive retrieval of relevant articles (
                    <xref ref-type="fig" rid="f1">Figure 1</xref>).</p>
            </sec>
            <sec id="sec8">
                <title>Finalizing the search strategy</title>
                <p>This meticulous approach to constructing the search strategy aimed to systematically retrieve articles relevant to the systematic review&#x2019;s objectives. By adapting the strategy for each database&#x2019;s unique characteristics, it ensured the comprehensive capture of pertinent literature on the effectiveness of treadmill training on balance improvement in the elderly population.</p>
                <fig fig-type="figure" id="f1" orientation="portrait" position="float">
                    <label>Figure 1. </label>
                    <caption>
                        <title>PRISMA flow chart: database search (January 1980 to May 2023).</title>
                    </caption>
                    <graphic id="gr1" orientation="portrait" position="float" xlink:href="https://f1000research-files.f1000.com/manuscripts/160679/0a44de03-045f-44ca-aedb-c364db9f9903_figure1.gif"/>
                </fig>
            </sec>
        </sec>
        <sec id="sec9" sec-type="results">
            <title>Results</title>
            <p>The modern landscape of healthcare and well-being is undergoing a profound transformation, propelled by the ever-expanding demographic of older adults and elderly individuals. In the pursuit of enhancing their quality of life, sustaining mobility, and mitigating age-related challenges, novel interventions are being explored with vigor. Amid this backdrop, our intention was to embark on a comprehensive exploration, elucidating the multifaceted effects of treadmill training interventions within this burgeoning demographic. The primary impetus behind curating this systematic review was to distill the collective wisdom embedded within a spectrum of studies that have investigated the effects of treadmill training in older adults and the elderly.</p>
            <p>The selected studies, spanning from 1997 to 2023, offered an opportunity to traverse the evolutionary journey of research in this domain, and glean insights that could potentially reshape the landscape of geriatric care and rehabilitation. Through an exhaustive synthesis of these studies, our aim was to unravel a mosaic of outcomes that extended beyond the immediate purview of each investigation. The intention was to amalgamate these findings into a cohesive narrative, one that transcended individual studies and illuminated broader patterns. This endeavor sought to underscore the transformative potential of treadmill training in older populations, tapping into its efficacy in restoring balance, fostering motor recovery, enhancing mobility, and ultimately elevating the overall quality of life. This systematic review engenders an in-depth exploration of the myriad effects encompassed by treadmill training interventions within the realm of older adults and elderly individuals. These studies collectively illuminate a multifaceted tapestry of outcomes that hold the potential to reshape mobility, balance, neurological well-being, and overall quality of life in this demographic (
                <xref ref-type="table" rid="T1">Table 1</xref>).</p>
            <table-wrap id="T1" orientation="portrait" position="float">
                <label>Table 1. </label>
                <caption>
                    <title>Studies focusing on treadmill training on elderly population.</title>
                </caption>
                <table content-type="article-table" frame="hsides">
                    <thead>
                        <tr>
                            <th align="left" colspan="1" rowspan="1" valign="top">Paper title</th>
                            <th align="left" colspan="1" rowspan="1" valign="top">Study type</th>
                            <th align="left" colspan="1" rowspan="1" valign="top">Population characteristics</th>
                            <th align="left" colspan="1" rowspan="1" valign="top">Intervention</th>
                            <th align="left" colspan="1" rowspan="1" valign="top">Duration</th>
                            <th align="left" colspan="1" rowspan="1" valign="top">Outcomes measured</th>
                            <th align="left" colspan="2" rowspan="1" valign="top">Main findings</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr>
                            <td align="left" colspan="7" rowspan="1" valign="middle">Treadmill Training for Fall Prevention and Balance Improvement in Older Adults:</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Effect of treadmill Perturbation-Based Balance Training on Fall Rates in Community-Dwelling Older Adults (
                                <xref ref-type="bibr" rid="ref32">N&#x00f8;rgaard et al., 2023</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">RCT</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">140 people aged 72 [5] years, divided into a PBT group and a control group</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Perturbation-based balance training treadmill intervention</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">80 minutes</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">12-Month Fall Rates</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Significant reduction in 12-month fall rates and injurious falls</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Improvement of quality of life and postural balance of institutionalized elderly people undergoing to a treadmill walking training (
                                <xref ref-type="bibr" rid="ref37">Pereira et al., 2021</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">RCT</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Intervention group (n = 23) and control group (n = 14)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill walking program</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">10 weeks</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Postural Balance, Quality of Life</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Positive effects on postural balance and quality of life</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Effectiveness of a treadmill Training Programme in Improving the Postural Balance on Institutionalized Older Adults (
                                <xref ref-type="bibr" rid="ref36">Pereira et al., 2020</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">RCT</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Intervention exercise group and control group</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill walking workout program</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">10 consecutive weeks</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Berg Balance Scale, Short Physical Performance Battery, Gait Speed, Timed Up and Go Test</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Positive effects on postural balance</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Postural stability after treadmill and overground walking in young and elderly (
                                <xref ref-type="bibr" rid="ref21">Hirjakov&#x00e1; et al., 2020</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Not specified</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Healthy young and elderly subjects</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill and overground walking</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Not specified</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Velocity Parameters</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Elderly became more unstable after treadmill walking, vision contributed to posture stabilization</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Effects of treadmill training on gait of elders with Parkinson's disease: a literature review (2020) (
                                <xref ref-type="bibr" rid="ref25">Luna et al., 2020</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Review</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Patients with Parkinson's disease</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill training</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">8 weeks</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Gait</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Positive effects on gait, can be combined with other therapies</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Dual-Task Training on a Treadmill to Improve Gait and Cognitive Function in Elderly Idiopathic Fallers (
                                <xref ref-type="bibr" rid="ref14">Dorfman et al., 2014</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">RCT</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Participant age: 78.1 &#x00b1; 5.81 years, 7 women</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill training (TT) while performing dual tasks</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">3 times a week for more than 6 weeks</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Berg Balance Scale, Dynamic Gait Index, gait speed during usual walking and while dual task (DT), cognitive performance as measured by the Trails Making Test B, quality of life as measured by SF-36, physical activity as measured by Physical Activity Scale for Elderly</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">After 6 weeks of TT + DT program, elderly fallers demonstrated improved scores on tests of mobility, functional performance tasks, and cognition. Dual task training can be readily implemented by therapists as a component of a fall-risk reduction training program</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Effectiveness of Treadmill Training on Balance Control in Elderly People: A Randomized Controlled Clinical Trial (
                                <xref ref-type="bibr" rid="ref39">Pirouzi et al., 2014</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">RCT</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">30 elderly humans divided into control and experimental groups</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">treadmill walking</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">4 weeks</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">
                                <p>
                                    <list list-type="bullet">
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Gait Speed Measured By 6 Minute Walk Test</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Balance Ability Evaluated By Fullerton Advanced Balance Scale (FABS) And Berg Balance Scale (BBS) Tests</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Postural Sway Items Such As The Center Of Pressure (COP), Average Displacement And Velocity</p>
                                        </list-item>
                                    </list>
                                </p>
                            </td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Forward and backward treadmill walk are effective in balance improvement in elderly people. Significant improvements in quiet standing on firm and foam surfaces, reduction in COP velocity during quiet standing and standing on foam</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Effects of a dual-task training on dynamic and static balance control of pre-frail elderly: a pilot study (
                                <xref ref-type="bibr" rid="ref47">Targino et al., 2012</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">RCT</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Control and intervention group</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">dual task treadmill training</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">4 weeks</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">
                                <p>
                                    <list list-type="bullet">
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Postural Control</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Balance In Different Tasks</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Static Balance</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Variables Related To Gait</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>BBS Scores</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Baropodometric Variables</p>
                                        </list-item>
                                    </list>
                                </p>
                            </td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Dual-task training on treadmill improves static and dynamic balance in pre-frail elderly women. Visual stimulation aids in short-term balance maintenance</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="7" rowspan="1" valign="middle">Treadmill Training for Neurophysiological Improvement in Diseased and Elderly Individuals:</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill Applications on the Neurophysiology of the Diseased and Elderly: A Review (
                                <xref ref-type="bibr" rid="ref29">Morency et al., 2017</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Review</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Diseased and elderly</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill use</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Not specified</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Neuroprotective Factors, Complications, Cognitive Changes, Quality of Life</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Treadmill use can create neuroprotective factors, improve complications, and increase quality of life</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Effects of physiotherapy including various forms of gait exercises on a treadmill on functional efficiency in the elderly at risk of falling (
                                <xref ref-type="bibr" rid="ref53">Wnuk et al., 2010</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Not specified</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Elderly at risk of falling</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Gait exercises on a treadmill</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Not specified</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Functional Efficiency</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Treadmill training improved functional efficiency in elderly at risk of falling</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Clinical research Effect of treadmill-based gait training on the stationary balance of elderly individuals (
                                <xref ref-type="bibr" rid="ref28">Monteiro et al., 2009</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">RCT</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">60 elderly women and 60 young adult women</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill-based gait training</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Not specified</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Center of Pressure Displacement Velocity, Radial Displacement of Center of Pressure</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Treadmill-based gait training improved stationary balance in elderly women</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="7" rowspan="1" valign="middle">Treadmill Training for Rehabilitation and Physical Improvement:</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Underwater treadmill training in adults with incomplete spinal cord injuries (
                                <xref ref-type="bibr" rid="ref46">Stevens, 2010</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Clinical Trial</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Adults with incomplete spinal cord injuries</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Underwater treadmill training</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">3 times per week for 8 weeks</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Cardiovascular Fitness, Muscular Strength</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Improved cardiovascular fitness and muscular strength</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill Training with Partial Body Weight Support: Influence of Body Weight Release on the Gait of Hemiparetic Patients (
                                <xref ref-type="bibr" rid="ref20">Hesse et al., 1997</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Not specified</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Six hemiparetic patients</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill training with partial body weight support</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Not specified</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Gait Parameters</td>
                            <td align="left" colspan="2" rowspan="1" valign="middle">Body weight release had significant effects on gait parameters</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Clinical Experience Using a 5-Week Treadmill Training Program With Virtual Reality to Enhance Gait in an Ambulatory Physical Therapy Service (
                                <xref ref-type="bibr" rid="ref44">Shema et al., 2014</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">RCT</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">60 people with a history of falls, poor mobility, or postural instability</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill training with virtual reality</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">5 weeks</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">
                                <p>
                                    <list list-type="bullet">
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Timed "Up &amp; Go" Test (Tug)</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>2 Minute Walk Test (2Mwt)</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>4 Square Step Test (FSST)</p>
                                        </list-item>
                                    </list>
                                </p>
                            </td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Treadmill training with VR appears to be an effective and practical tool that can be applied in an outpatient physical therapy clinic. Improvements in gait, mobility, and postural control observed</td>
                        </tr>
                        <tr>
                            <td align="left" colspan="1" rowspan="1" valign="middle">Virtual Reality Gait Training to Promote Balance and Gait Among Older People: A Randomized Clinical Trial (
                                <xref ref-type="bibr" rid="ref23">Lee, 2021</xref>)</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">RCT</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">56 elderly individuals who had experienced a fall divided into a VRGT group and a control group</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">virtual reality gait training (VRGT) with non motorized treadmill</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">6 weeks</td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">
                                <p>
                                    <list list-type="bullet">
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>1 Leg Standing Test</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Berg Balance Scale</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Functional Reach Test</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Timed Up And Go Test</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Velocity</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Step Width</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Stride Length</p>
                                        </list-item>
                                        <list-item>
                                            <label>&#x2022;</label>
                                            <p>Step Length</p>
                                        </list-item>
                                    </list>
                                </p>
                            </td>
                            <td align="left" colspan="1" rowspan="1" valign="middle">VR gait training improves balance and gait ability in elderly individuals who had experienced a fall. Notable improvements in spatiotemporal gait parameters</td>
                        </tr>
                    </tbody>
                </table>
            </table-wrap>
            <p>This comprehensive exploration doesn&#x2019;t merely present a mosaic of findings; it endeavors to offer a comprehensive lens through which healthcare practitioners, researchers, and policymakers can perceive the nuanced impact of treadmill interventions. By cataloging the diversity of outcomes across studies, we aimed to provide a roadmap for refining intervention protocols, optimizing parameters, and tailoring approaches to meet the diverse needs of older adults and elderly individuals. The implications of this endeavor extend beyond the realms of academia. The insights gleaned from this systematic review hold the potential to cascade into the broader spectrum of geriatric care and societal sustainability. The sustained mobility and well-being of older individuals directly impact their active engagement in their communities, the reduction of healthcare burdens, and the conservation of resources. In weaving together the threads of these studies, we lay the foundation for a sustainable future, wherein a more comprehensive approach to geriatric well-being can be nurtured.</p>
            <p>At the forefront of these investigations lies a profound focus on balance enhancement, a critical factor that directly influences fall prevention and overall functional independence in aging populations. 
                <xref ref-type="bibr" rid="ref32">N&#x00f8;rgaard et al. (2023)</xref> ingeniously introduced perturbation-based balance training on a treadmill, culminating in a compelling reduction in fall rates among community-dwelling older adults. A confluence of results from 
                <xref ref-type="bibr" rid="ref36">Pereira et al. (2020</xref>, 
                <xref ref-type="bibr" rid="ref37">2021)</xref>, 
                <xref ref-type="bibr" rid="ref39">Pirouzi et al. (2014)</xref>, and 
                <xref ref-type="bibr" rid="ref47">Targino et al. (2012)</xref> further amplifies this narrative, unveiling substantial improvements in postural balance and a significant upswing in the quality of life among institutionalized elderly individuals, further emphasizing the holistic impact of treadmill interventions.</p>
            <p>The narrative extends to older individuals grappling with neurological conditions, prominently Parkinson&#x2019;s disease and hemiparesis. 
                <xref ref-type="bibr" rid="ref25">Luna et al. (2020)</xref> masterfully unraveled the positive implications of treadmill training on gait patterns in Parkinson&#x2019;s disease, shedding light on the potential for rehabilitation and functional recovery in this population. This trajectory is mirrored in the investigation by 
                <xref ref-type="bibr" rid="ref20">Hesse et al. (1997)</xref>, which showcased the transformative power of partial body weight-supported treadmill training in hemiparetic patients, cultivating a realm of possibilities for motor recovery. The review embarks on a comparative expedition, juxtaposing treadmill training against alternative interventions. 
                <xref ref-type="bibr" rid="ref59">Baek et al. (2021)</xref> orchestrated an insightful exploration into dual-task treadmill training versus conventional balance exercises, revealing the nuanced superiority of dual-task treadmill training in the realm of balance enhancement and fall risk mitigation. This illuminates the potential of incorporating cognitive engagement alongside physical training, underscoring the dynamic nature of treadmill interventions (
                <xref ref-type="table" rid="T1">Table 1</xref>).</p>
            <p>
                <xref ref-type="bibr" rid="ref60">Stevens et al. (2015)</xref> courageously ventured into uncharted waters, introducing underwater treadmill training in individuals with incomplete spinal cord injuries. This groundbreaking approach unveiled an alternative dimension of therapeutic intervention, unveiling the untapped potential of aquatic treadmill training in fostering recovery and enhancing physical function, an especially significant revelation in the context of spinal cord injuries. While this comprehensive synthesis lauds the affirmative outcomes of treadmill training interventions, it also casts a discerning eye on challenges that warrant consideration. 
                <xref ref-type="bibr" rid="ref21">Hirjakov&#x00e1; et al. (2020)</xref> added a layer of complexity by illuminating sensory conflicts introduced by treadmill training, particularly among elderly individuals. This observation augments our understanding of potential downsides and underscores the need for a holistic approach when designing treadmill interventions. The amalgamation of these studies not only underscores the positive outcomes but also emphasizes the exigency for standardized protocols and optimal intervention parameters across diverse populations. Collectively, these studies weave a compelling narrative that posits treadmill training as a transformative catalyst, fostering improvements in postural equilibrium, dynamic gait mechanics, and the overarching quality of life for aging individuals and those navigating intricate neurological trajectories.</p>
            <p>Furthermore, the systematic review included a diverse array of studies that explored the effects of treadmill training interventions in older adults and the elderly (
                <xref ref-type="table" rid="T1">Table 1</xref>). 
                <xref ref-type="bibr" rid="ref44">Shema et al. (2014)</xref> delved into the realm of outpatient physical therapy, utilizing a 5-week treadmill training program with virtual reality to enhance gait in individuals with a history of falls, poor mobility, or postural instability. The results indicated notable improvements in gait, mobility, and postural control, showcasing the effectiveness of treadmill training with virtual reality. A Randomized Controlled Clinical Trial conducted by 
                <xref ref-type="bibr" rid="ref39">Pirouzi et al. (2014)</xref> offered insights into the impact of treadmill walking on balance control. The study, involving 30 community dwelling older adults with a Berg Balance Scale score of 36-48, highlighted significant improvements in balance, particularly in quiet standing on firm and foam surfaces, along with a reduction in Center of Pressure (COP) velocity during quiet standing and standing on foam. Furthermore, the study by 
                <xref ref-type="bibr" rid="ref47">Targino et al. (2012)</xref> delved into the realm of pre-frail elderly individuals through a pilot study. The investigation revealed that dual-task training on a treadmill improved static and dynamic balance, with visual stimulation aiding in short-term balance maintenance. Lastly, Kyeongjin Lee&#x2019;s study in 2020 focused on the potential of virtual reality gait training (VRGT) with non-motorized treadmill to promote balance and gait among older people who had experienced falls. This randomized clinical trial involving 56 elderly individuals highlighted the effectiveness of VRGT in improving balance and gait ability, with significant enhancements observed in spatiotemporal gait parameters.</p>
            <p>Collectively, these studies weave a compelling narrative that posits treadmill training as a transformative catalyst, fostering improvements in postural equilibrium, dynamic gait mechanics, and the overarching quality of life for aging individuals and those navigating intricate neurological trajectories.</p>
        </sec>
        <sec id="sec10" sec-type="discusion">
            <title>Discussion</title>
            <p>The burgeoning field of healthcare and well-being, driven by the increasing population of older adults and elderly individuals, is undergoing significant transformation. As efforts intensify to enhance their quality of life, maintain mobility, and address aging-related challenges, treadmill training interventions have emerged as a focal point of interest. This systematic review synthesizes a wide range of studies to distill collective knowledge on the impact of treadmill training on this demographic. Covering research from 1997 to 2023, it offers deep insights that could potentially reshape geriatric care and rehabilitation practices. Treadmill training in geriatric populations has shown transformative potential, particularly in restoring balance, facilitating motor recovery, enhancing mobility, and ultimately elevating overall quality of life. These findings align with previous studies (
                <xref ref-type="bibr" rid="ref50">van Ooijen et al., 2013</xref>; 
                <xref ref-type="bibr" rid="ref54">Yang et al., 2011</xref>; 
                <xref ref-type="bibr" rid="ref19">Herman et al., 2007</xref>; 
                <xref ref-type="bibr" rid="ref21">Hirjakov&#x00e1; et al., 2020</xref>), which demonstrated improvements in gait and balance among elderly participants following treadmill training. Similarly, 
                <xref ref-type="bibr" rid="ref28">Monteiro (2009)</xref> observed significant mobility enhancements in their study group. The review methodology involved a comprehensive search across databases like PubMed, Scopus, and Web of Science, focusing on publications between 1997 and 2023. The selected studies had to specifically examine the effects of treadmill training on older adults, with particular emphasis on balance, mobility, and quality of life.</p>
            <p>The key findings from this comprehensive review illuminate several critical areas of impact regarding treadmill training for older adults and elderly individuals, each noteworthy in its implications for geriatric care. Firstly, the aspect of balance enhancement has been a significant focus. Studies conducted by 
                <xref ref-type="bibr" rid="ref31">Newell, (2012)</xref> and 
                <xref ref-type="bibr" rid="ref15">Ferhi, Hamza, et al. (2023)</xref> have been pivotal in highlighting the role of treadmill training in improving balance. This factor is particularly crucial for preventing falls, a common risk for the elderly, and maintaining functional independence in older populations. The consistent findings across these studies underscore the effectiveness of treadmill training as a practical approach to mitigate one of the most pressing concerns in geriatric health &#x2013; fall prevention. Secondly, the impact of treadmill training on individuals with neurological conditions has garnered considerable attention. The research delves into the realm of neurodegenerative diseases, particularly Parkinson&#x2019;s disease and hemiparesis (
                <xref ref-type="bibr" rid="ref5">Bishnoi et al., 2022</xref>; 
                <xref ref-type="bibr" rid="ref42">Robinson et al., 2019</xref>; 
                <xref ref-type="bibr" rid="ref2">Almutairi, 2023</xref>). Their findings indicate promising prospects for functional recovery in these groups, suggesting that treadmill training could be a valuable tool in the rehabilitation of patients with neurological impairments. The implications of these findings are far-reaching, considering the complexity and the increasing prevalence of neurological conditions among the elderly.</p>
            <p>Lastly, the comparative efficacy of treadmill training relative to other interventions stands out as a notable finding. Previous studies provides evidence of the superiority of treadmill training over other rehabilitative strategies, especially in enhancing balance and reducing fall risks (
                <xref ref-type="bibr" rid="ref17">Gaspar and Lap&#x00e3;o, 2021</xref>; 
                <xref ref-type="bibr" rid="ref11">Choi et al., 2017</xref>). Moreover, the exploration of innovative approaches like underwater treadmill training for spinal cord injury patients, as investigated by 
                <xref ref-type="bibr" rid="ref18">Hammill et al. (2018)</xref>, sheds light on the potential of unconventional interventions (
                <xref ref-type="bibr" rid="ref13">Dolbow et al., 2016</xref>; 
                <xref ref-type="bibr" rid="ref18">Hammill et al., 2018</xref>). These innovative methods broaden the scope of treadmill training, offering new avenues for rehabilitation that could be particularly beneficial for individuals with unique or more severe mobility challenges.</p>
            <p>The review also acknowledged challenges, including sensory conflicts introduced by treadmill training, a concern highlighted in the study by 
                <xref ref-type="bibr" rid="ref21">Hirjakov&#x00e1; et al. (2020)</xref>. These findings emphasize the need for holistic and tailored intervention strategies.</p>
            <sec id="sec11">
                <title>Implications and future research</title>
                <p>The implications of the review findings hold relevance for both clinical practice and policy considerations. The positive impact of treadmill training on postural balance and gait parameters suggests its potential as a viable intervention to reduce fall risk among older adults. Furthermore, the review underscores the importance of individualized training programs tailored to participants&#x2019; specific needs and capacities. Despite the promising results, several avenues for future research emerge. Long-term studies evaluating the sustained effects of treadmill training interventions would contribute valuable insights. Additionally, investigating the optimal dosage, intensity, and duration of training sessions could enhance the precision of recommendations for clinical implementation. Furthermore, examining the cost-effectiveness and scalability of these interventions will be essential for broader adoption.</p>
            </sec>
            <sec id="sec12">
                <title>Strengths and limitations</title>
                <p>One strength of this review lies in its comprehensive search strategy, encompassing a diverse range of studies. The inclusion of various types of treadmill training interventions allowed for a nuanced understanding of the benefits across different contexts. However, limitations include potential publication bias and the heterogeneity of the selected studies, which may have influenced the synthesis of results.</p>
            </sec>
        </sec>
        <sec id="sec13" sec-type="conclusion">
            <title>Conclusion</title>
            <p>In conclusion, the amalgamation of these studies paints a vivid tapestry that not only underscores the affirmative outcomes but also accentuates the urgency for standardized protocols and optimal intervention parameters across diverse populations. As we weave these narratives together, a compelling collective narrative emerges, one that envisions treadmill training as a transformative catalyst, fostering advancements in postural equilibrium, dynamic gait mechanics, and the overarching quality of life for aging individuals and those navigating intricate neurological trajectories. The comprehensive synthesis presented here offers a panoramic view of the potential of treadmill interventions in geriatric care, laying the groundwork for a future that champions holistic well-being in older populations.</p>
            <sec id="sec14">
                <title>Ethics and consent</title>
                <p>Ethical approval and written consent were not required.</p>
            </sec>
        </sec>
    </body>
    <back>
        <sec id="sec15" sec-type="data-availability">
            <title>Data availability</title>
            <sec id="sec16">
                <title>Underlying data</title>
                <p>Figshare: Details of Studies Included, 
                    <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.6084/m9.figshare.25322011.v1">https://doi.org/10.6084/m9.figshare.25322011.v1</ext-link> (
                    <xref ref-type="bibr" rid="ref56">Rizvi, 2024a</xref>).</p>
                <p>This project contains the following data:
                    <list list-type="bullet">
                        <list-item>
                            <label>-</label>
                            <p>Details of Studies Included.xlsx</p>
                        </list-item>
                    </list>
                </p>
            </sec>
            <sec id="sec17">
                <title>Extended data</title>
                <p>Figshare: PRISMA Flow chart, 
                    <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.6084/m9.figshare.25323391.v1">https://doi.org/10.6084/m9.figshare.25323391.v1</ext-link> (
                    <xref ref-type="bibr" rid="ref57">Rizvi, 2024b</xref>).</p>
                <p>This project contains the following extended data:
                    <list list-type="bullet">
                        <list-item>
                            <label>-</label>
                            <p>PRISMA Flow chart</p>
                        </list-item>
                    </list>
                </p>
            </sec>
            <sec id="sec18">
                <title>Reporting guidelines</title>
                <p>Figshare: PRISMA check list, 
                    <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.6084/m9.figshare.25323478.v1">https://doi.org/10.6084/m9.figshare.25323478.v1</ext-link> (
                    <xref ref-type="bibr" rid="ref58">Rizvi, 2024c</xref>).</p>
                <p>Data are available under the terms of the 
                    <ext-link ext-link-type="uri" xlink:href="https://creativecommons.org/licenses/by/4.0/">CC BY 4.0 Attribution International License</ext-link> (CC BY 4.0).</p>
            </sec>
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    <sub-article article-type="reviewer-report" id="report353972">
        <front-stub>
            <article-id pub-id-type="doi">10.5256/f1000research.160679.r353972</article-id>
            <title-group>
                <article-title>Reviewer response for version 1</article-title>
            </title-group>
            <contrib-group>
                <contrib contrib-type="author">
                    <name>
                        <surname>Alhusaini</surname>
                        <given-names>Adel</given-names>
                    </name>
                    <xref ref-type="aff" rid="r353972a1">1</xref>
                    <role>Referee</role>
                    <uri content-type="orcid">https://orcid.org/0000-0001-6695-6820</uri>
                </contrib>
                <aff id="r353972a1">
                    <label>1</label>Department of Health Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Riyadh Province, Saudi Arabia</aff>
            </contrib-group>
            <author-notes>
                <fn fn-type="conflict">
                    <p>
                        <bold>Competing interests: </bold>No competing interests were disclosed.</p>
                </fn>
            </author-notes>
            <pub-date pub-type="epub">
                <day>9</day>
                <month>1</month>
                <year>2025</year>
            </pub-date>
            <permissions>
                <copyright-statement>Copyright: &#x00a9; 2025 Alhusaini A</copyright-statement>
                <copyright-year>2025</copyright-year>
                <license xlink:href="https://creativecommons.org/licenses/by/4.0/">
                    <license-p>This is an open access peer review report distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p>
                </license>
            </permissions>
            <related-article ext-link-type="doi" id="relatedArticleReport353972" related-article-type="peer-reviewed-article" xlink:href="10.12688/f1000research.146583.1"/>
            <custom-meta-group>
                <custom-meta>
                    <meta-name>recommendation</meta-name>
                    <meta-value>approve-with-reservations</meta-value>
                </custom-meta>
            </custom-meta-group>
        </front-stub>
        <body>
            <p>This systematic review offers a significant contribution to understanding the efficacy of treadmill training in enhancing balance and reducing fall risk among older adults. The methodology encompasses a comprehensive literature search and analysis of approximately fifteen studies evaluating various treadmill training protocols. The findings suggest potential benefits for improving balance and mobility, particularly for individuals with Parkinson's disease or spinal cord injuries. The conclusions appear largely substantiated by the presented evidence, and the acknowledgment of limitations is appropriate. The authors rightly emphasize the significance of synthesizing disparate research. A recommendation for further investigation to optimize training protocols and address individualized needs is critical. However, several aspects warrant further consideration to enhance the review's clarity, rigor, and practical applicability.</p>
            <p> </p>
            <p> Methodological Clarity and Transparency: An inconsistency in the reported number of included studies (n=16 in the abstract versus n=15 in Table 1) warrants attention regarding transparency. The authors should explicitly state the final number of studies included within the results section and reconcile this discrepancy through verification and subsequent updates to both sections.</p>
            <p> </p>
            <p> Data Interpretation and Contextualization: Regarding Table 1: study by Hesse et al., 1997, updating the 'Study Type' field to 'Quasi-experimental study' is recommended if methodologically accurate. Furthermore, contextualizing the findings in relation to existing systematic reviews and meta-analyses would significantly enrich the review by providing a broader scholarly perspective and identifying areas of convergence or divergence.</p>
            <p> </p>
            <p> Methodological Rigor and Bias Assessment: Explicit reporting of blinding procedures within the included studies is necessary to facilitate a robust assessment of potential bias. Acknowledging limitations arising from the absence or non-reporting of blinding procedures is also crucial for a comprehensive evaluation of study quality.</p>
            <p> </p>
            <p> Please carefully review Table 1's columns and consider these revisions for clarity and conciseness:</p>
            <p> Change "Paper Title" to "Author(s), Year" without the title for easier reference and table management.</p>
            <p> Change "Study Type" to the more precise "Study Design."</p>
            <p> Revise "Population Characteristics" to "Participant Characteristics" and add an "Age" field for comprehensive participant details.</p>
            <p> Add a "Country/Setting" column to provide important contextual information, if possible.</p>
            <p> Combine "Intervention" and "Duration" into a single column for better readability (e.g., "Treadmill training, 8 weeks").</p>
            <p> Add separate columns for "Primary Outcome(s)" and "Secondary Outcome(s)" of the studies.</p>
            <p> Include a column specifying the "Outcome Measurement Tools" used for each outcome.</p>
            <p> </p>
            <p> Furthermore, concerning citation analysis within Table 1, if a literature review is cited, it is essential to examine the original primary studies referenced within that review and include those primary studies in the systematic review if they meet the pre-defined inclusion criteria.</p>
            <p>Are the rationale for, and objectives of, the Systematic Review clearly stated?</p>
            <p>Yes</p>
            <p>Is the statistical analysis and its interpretation appropriate?</p>
            <p>Not applicable</p>
            <p>If this is a Living Systematic Review, is the &#x2018;living&#x2019; method appropriate and is the search schedule clearly defined and justified? (&#x2018;Living Systematic Review&#x2019; or a variation of this term should be included in the title.)</p>
            <p>Not applicable</p>
            <p>Are sufficient details of the methods and analysis provided to allow replication by others?</p>
            <p>Partly</p>
            <p>Are the conclusions drawn adequately supported by the results presented in the review?</p>
            <p>Yes</p>
            <p>Reviewer Expertise:</p>
            <p>Developmental Disabilities, Early Mobility, Infant Movement, Motor Skills, Motor Control, Gait, Balance, Coordination, Assistive Technology, Childhood Obesity, Physical Function, Physical Activity, Sedentary Behavior, Participation Restrictions, ICF (Children), Outcome Measures &amp; Assessment, Handwriting, Quality of Life (Pediatrics), Pediatric Rehabilitation, Early Intervention, Child Development, Motor Delay, Postural Control, Motivation, Self-Efficacy, Anxiety (Movement-Related), Social Participation, Family Involvement, Caregiver Burden, School Integration.</p>
            <p>I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard, however I have significant reservations, as outlined above.</p>
        </body>
        <sub-article article-type="response" id="comment13150-353972">
            <front-stub>
                <contrib-group>
                    <contrib contrib-type="author">
                        <name>
                            <surname>Rizvi</surname>
                            <given-names>Moattar</given-names>
                        </name>
                        <aff>Physiotherapy, Manav Rachna International Institute of Research and Studies, Faridabad, Haryana, India</aff>
                    </contrib>
                </contrib-group>
                <author-notes>
                    <fn fn-type="conflict">
                        <p>
                            <bold>Competing interests: </bold>No competing interests were disclosed.</p>
                    </fn>
                </author-notes>
                <pub-date pub-type="epub">
                    <day>15</day>
                    <month>1</month>
                    <year>2025</year>
                </pub-date>
            </front-stub>
            <body>
                <p>
                    <bold>Many Thank for&#x00a0; prof. Adel Alhusaini&#x00a0; for your valuable and worthful comments&#x00a0;&#x00a0;</bold>
                </p>
                <p> The responses for all reviewing comments one by one&#x00a0;</p>
                <p> 
                    <bold>1-Reviewer comment&#x00a0;</bold>
                </p>
                <p> Methodological Clarity and Transparency: An inconsistency in the reported number of included studies (n=16 in the abstract versus n=15 in Table 1) warrants attention regarding transparency. The authors should explicitly state the final number of studies included within the results section and reconcile this discrepancy through verification and subsequent updates to both sections.</p>
                <p> 
                    <bold>1-Author response</bold>&#x00a0;</p>
                <p> Thank you for pointing out this inconsistency. Upon verification, the correct number of included studies is 
                    <bold>15</bold>, and the mention of 
                    <bold>16 studies in the abstract was a typographical error</bold>. We have now updated the abstract, results section, and any other relevant parts of the manuscript to reflect the correct count (
                    <bold>n=15</bold>) to maintain accuracy and transparency.</p>
                <p> </p>
                <p> 
                    <bold>2-Reviewer comment&#x00a0;</bold>
                </p>
                <p> Data Interpretation and Contextualization: Regarding Table 1: study by Hesse et al., 1997, updating the 'Study Type' field to 'Quasi-experimental study' is recommended if methodologically accurate. Furthermore, contextualizing the findings in relation to existing systematic reviews and meta-analyses would significantly enrich the review by providing a broader scholarly perspective and identifying areas of convergence or divergence.</p>
                <p> Methodological Rigor and Bias Assessment: Explicit reporting of blinding procedures within the included studies is necessary to facilitate a robust assessment of potential bias. Acknowledging limitations arising from the absence or non-reporting of blinding procedures is also crucial for a comprehensive evaluation of study quality.</p>
                <p> 
                    <bold>2- Author comments</bold>
                </p>
                <p> Thank you for your suggestion. The assessment of blinding procedures has been conducted using the 
                    <bold>Risk of Bias Tool (RoB 2 for RCTs)</bold>. The updated 
                    <bold>Results section</bold> now explicitly reports blinding practices within the included studies, identifying whether 
                    <bold>single, double, or no blinding</bold> was used.</p>
                <p> Additionally, we have now included a detailed 
                    <bold>bias assessment table</bold> to highlight the impact of blinding (or lack thereof) on study outcomes. In cases where blinding was not reported, the potential risk of 
                    <bold>performance and detection bias</bold> has been acknowledged.</p>
                <p> 
                    <bold>3- Reviewer comment&#x00a0;</bold>
                </p>
                <p> &#x00a0;Please carefully review Table 1's columns and consider these revisions for clarity and conciseness:</p>
                <p> Change "Paper Title" to "Author(s), Year" without the title for easier reference and table management.</p>
                <p> Change "Study Type" to the more precise "Study Design."</p>
                <p> Revise "Population Characteristics" to "Participant Characteristics" and add an "Age" field for comprehensive participant details.</p>
                <p> Add a "Country/Setting" column to provide important contextual information, if possible.</p>
                <p> Combine "Intervention" and "Duration" into a single column for better readability (e.g., "Treadmill training, 8 weeks").</p>
                <p> Add separate columns for "Primary Outcome(s)" and "Secondary Outcome(s)" of the studies.</p>
                <p> Include a column specifying the "Outcome Measurement Tools" used for each outcome</p>
                <p> 
                    <bold>3- Author response&#x00a0;</bold>
                </p>
                <p> Thank you for your detailed and valuable suggestions. We have carefully revised 
                    <bold>Table 1</bold> to improve clarity, conciseness, and readability in accordance with your recommendations: 
                    <list list-type="bullet">
                        <list-item>
                            <p>The 
                                <bold>"Paper Title"</bold> column has been changed to 
                                <bold>"Author(s), Year"</bold>, listing only the author(s) and publication year for streamlined reference.</p>
                        </list-item>
                        <list-item>
                            <p>
                                <bold>"Study Type"</bold> has been updated to 
                                <bold>"Study Design"</bold> to ensure precision in methodological classification.</p>
                        </list-item>
                        <list-item>
                            <p>
                                <bold>"Population Characteristics"</bold> has been revised to 
                                <bold>"Participant Characteristics,"</bold> and an 
                                <bold>"Age"</bold> field has been added to provide a clearer demographic profile of study participants.</p>
                        </list-item>
                        <list-item>
                            <p>A new 
                                <bold>"Country/Setting"</bold> column has been included where possible to offer contextual insights into the study environments.</p>
                        </list-item>
                        <list-item>
                            <p>The 
                                <bold>"Intervention" and "Duration"</bold> columns have been combined into a single column to improve table readability (e.g., "Treadmill training, 8 weeks").</p>
                        </list-item>
                        <list-item>
                            <p>Separate columns for 
                                <bold>"Primary Outcome(s)"</bold> and 
                                <bold>"Secondary Outcome(s)"</bold> have been added to distinguish key findings in a structured manner.</p>
                        </list-item>
                    </list> .
                    <bold>4-Reviewer comment&#x00a0;</bold>
                </p>
                <p> Furthermore, concerning citation analysis within Table 1, if a literature review is cited, it is essential to examine the original primary studies referenced within that review and include those primary studies in the systematic review if they meet the pre-defined inclusion criteria.</p>
                <p> 
                    <bold>4- Author response&#x00a0;</bold>
                </p>
                <p> Thank you for your insightful suggestion. We conducted a thorough 
                    <bold>citation analysis</bold> of the literature reviews included in Table 1 to identify relevant 
                    <bold>primary studies</bold> that could potentially meet our pre-defined inclusion criteria. However, upon careful examination, 
                    <bold>none of the primary studies referenced within the cited literature reviews met the eligibility criteria</bold> for inclusion in this systematic review.</p>
                <p> </p>
                <p> 
                    <bold>Many thanks for your efforts and worthful comments&#x00a0;</bold>
                </p>
            </body>
        </sub-article>
    </sub-article>
    <sub-article article-type="reviewer-report" id="report351604">
        <front-stub>
            <article-id pub-id-type="doi">10.5256/f1000research.160679.r351604</article-id>
            <title-group>
                <article-title>Reviewer response for version 1</article-title>
            </title-group>
            <contrib-group>
                <contrib contrib-type="author">
                    <name>
                        <surname>Alayat</surname>
                        <given-names>Mohamed Salaheldien</given-names>
                    </name>
                    <xref ref-type="aff" rid="r351604a1">1</xref>
                    <xref ref-type="aff" rid="r351604a2">2</xref>
                    <role>Referee</role>
                    <uri content-type="orcid">https://orcid.org/0000-0003-1039-7550</uri>
                </contrib>
                <aff id="r351604a1">
                    <label>1</label>Physiotherapy and rehabilitation department, Faculty of Applied Medical science, Umm Al-Qura University, Mecca, Saudi Arabia</aff>
                <aff id="r351604a2">
                    <label>2</label>Basic Science, Cairo University, Faculty of Physical Therapy, Giza, Egypt, Egypt</aff>
            </contrib-group>
            <author-notes>
                <fn fn-type="conflict">
                    <p>
                        <bold>Competing interests: </bold>No competing interests were disclosed.</p>
                </fn>
            </author-notes>
            <pub-date pub-type="epub">
                <day>31</day>
                <month>12</month>
                <year>2024</year>
            </pub-date>
            <permissions>
                <copyright-statement>Copyright: &#x00a9; 2024 Alayat MS</copyright-statement>
                <copyright-year>2024</copyright-year>
                <license xlink:href="https://creativecommons.org/licenses/by/4.0/">
                    <license-p>This is an open access peer review report distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p>
                </license>
            </permissions>
            <related-article ext-link-type="doi" id="relatedArticleReport351604" related-article-type="peer-reviewed-article" xlink:href="10.12688/f1000research.146583.1"/>
            <custom-meta-group>
                <custom-meta>
                    <meta-name>recommendation</meta-name>
                    <meta-value>approve-with-reservations</meta-value>
                </custom-meta>
            </custom-meta-group>
        </front-stub>
        <body>
            <p>Title:</p>
            <p> The title containing &#x201c;geriatric care&#x201d; and &#x201c;elderly population&#x201d;. Use one of them only. Suggested title&#x201d; efficacy of treadmill training on balance and fall risks in elderly population. A systematic review&#x201d;.</p>
            <p> 
                <bold>Abstract:</bold>
            </p>
            <p> 1) Search until May 31, 2023. It seems to be old and needed for update.</p>
            <p> 2) &#x201c;From 74 identified studies, outcome measures were categorized into groups like &#x201c;Balance Improvement,&#x201d; &#x201c;Gait Improvement,&#x201d; &#x201c;Mobility Enhancement,&#x201d; &#x201c;Muscle Strength Improvement,&#x201d; &#x201c;Cognitive Function and Quality of Life,&#x201d; and others&#x201d; No need for all alternative words for measuring balance. The main measured outcome was balance.</p>
            <p> 3) The excluded Articles criteria are not placed in the abstract. It is better to be placed in the methodology section.</p>
            <p> 4) The results for fall risks reduction were not mentioned in the result section in the abstract. It is your second measured outcomes as mentioned in the title and research aim.</p>
            <p> </p>
            <p> 
                <bold>Introduction:</bold>
            </p>
            <p> You used present or future tense in writing &#x201c;The review will rigorously&#x201d;. Please use the past tense. &#x201c; The focus of this systematic review is to delve deep&#x201d;. Do not use we or our, use the third pronoun like it was &#x2026;..</p>
            <p> </p>
            <p> 
                <bold>Methodology:</bold>
            </p>
            <p> 1) Use the updated for of PRISMA flow chart (PRISMA 2020 flow diagram for new systematic reviews which included searches of databases, registers and other sources). The new one included the Identification of studies via databases and registers and Identification of studies via other methods.</p>
            <p> 2) Mention the methods of identifying and removing the duplicates in different databases, the data extraction criteria, the used methods of methodological quality assessment.</p>
            <p> 3) Why you split the table including subtitle &#x201c;Treadmill Training for Neurophysiological Improvement in Diseased and Elderly Individuals&#x201d;.</p>
            <p> 4) Where the results of assessment of methodological quality in the result section.</p>
            <p> 5) Discussion needs more extensive report of finding of this systematic review.</p>
            <p>Are the rationale for, and objectives of, the Systematic Review clearly stated?</p>
            <p>Yes</p>
            <p>Is the statistical analysis and its interpretation appropriate?</p>
            <p>Partly</p>
            <p>If this is a Living Systematic Review, is the &#x2018;living&#x2019; method appropriate and is the search schedule clearly defined and justified? (&#x2018;Living Systematic Review&#x2019; or a variation of this term should be included in the title.)</p>
            <p>Partly</p>
            <p>Are sufficient details of the methods and analysis provided to allow replication by others?</p>
            <p>Partly</p>
            <p>Are the conclusions drawn adequately supported by the results presented in the review?</p>
            <p>Yes</p>
            <p>Reviewer Expertise:</p>
            <p>Physical Therapy, Rehabilitation, Therapeutic Modalities.</p>
            <p>I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard, however I have significant reservations, as outlined above.</p>
        </body>
        <sub-article article-type="response" id="comment13149-351604">
            <front-stub>
                <contrib-group>
                    <contrib contrib-type="author">
                        <name>
                            <surname>Rizvi</surname>
                            <given-names>Moattar</given-names>
                        </name>
                        <aff>Physiotherapy, Manav Rachna International Institute of Research and Studies, Faridabad, Haryana, India</aff>
                    </contrib>
                </contrib-group>
                <author-notes>
                    <fn fn-type="conflict">
                        <p>
                            <bold>Competing interests: </bold>No competing interests were disclosed.</p>
                    </fn>
                </author-notes>
                <pub-date pub-type="epub">
                    <day>15</day>
                    <month>1</month>
                    <year>2025</year>
                </pub-date>
            </front-stub>
            <body>
                <p>Thanks prof ,Mohamed Salah for your valuable &amp; worthful comments and your suggestions&#x00a0;</p>
                <p> The responses of author to all comments one by one&#x00a0;</p>
                <p> 1-Comment1-&#x00a0;&#x00a0;Title:</p>
                <p> The title containing &#x201c;geriatric care&#x201d; and &#x201c;elderly population&#x201d;. Use one of them only. Suggested title&#x201d; efficacy of treadmill training on balance and fall risks in elderly population. A systematic review&#x201d;.</p>
                <p> 1- Author response&#x00a0;</p>
                <p> Thank you for your valuable suggestion. We have modified the title to align with your recommendation. The revised title is:</p>
                <p> 
                    <bold>"Efficacy of Treadmill Training on Balance and Fall Risks in the Elderly: A Systematic Review."</bold>
                </p>
                <p>
                    <bold> </bold>
                </p>
                <p>
                    <bold> Abstract&#x00a0;</bold>
                </p>
                <p>
                    <bold> 1 - Reviewer Comment&#x00a0;</bold>
                </p>
                <p>
                    <bold> Abstract:</bold>
                </p>
                <p> 1) Search until May 31, 2023. It seems to be old and needed for updates.</p>
                <p> </p>
                <p> 1-Author Response&#x00a0;</p>
                <p> Thank you for pointing this out. We have updated the search to include studies published up to 
                    <bold>January 1, 2025.</bold> After rerunning the search using the same strategy, no additional articles matching the inclusion criteria were identified. Therefore, the original findings remain unchanged.&#x200b;&#x200b;&#x200b;&#x200b;&#x200b;&#x200b;&#x200b;</p>
                <p> 
                    <bold>2- Reviewer Comment&#x00a0;</bold>
                </p>
                <p> 2) &#x201c;From 74 identified studies, outcome measures were categorized into groups like &#x201c;Balance Improvement,&#x201d; &#x201c;Gait Improvement,&#x201d; &#x201c;Mobility Enhancement,&#x201d; &#x201c;Muscle Strength Improvement,&#x201d; &#x201c;Cognitive Function and Quality of Life,&#x201d; and others&#x201d; No need for all alternative words for measuring balance. The main measured outcome was balance.</p>
                <p> &#x00a0; &#x00a0;2 -Author response&#x00a0;</p>
                <p> Thank you for your feedback. We have revised the text to emphasize balance as the primary outcome measure while retaining the mention of secondary outcomes. The updated text now reads:</p>
                <p> 
                    <bold>"From 74 identified studies, the primary outcome measure was &#x2018;Balance Improvement,&#x2019; while secondary outcomes included &#x2018;Cognitive Function and Quality of Life,&#x2019; among others."</bold>
                </p>
                <p> This revision ensures clarity and aligns with the focus of the systematic review</p>
                <p> 3-Reviewer comment&#x00a0;</p>
                <p> The excluded Articles criteria are not placed in the abstract. It is better to be placed in the methodology section.</p>
                <p> 3-Author response&#x00a0;</p>
                <p> Thank you for the suggestion. We have removed the excluded articles criteria from the abstract and incorporated them into the Methodology section.</p>
                <p> 4-Reviewer comment&#x00a0;</p>
                <p> The results for fall risks reduction were not mentioned in the result section in the abstract. It is your second measured outcomes as mentioned in the title and research aim.</p>
                <p> 4-Author response&#x00a0;</p>
                <p> Thank you for your valuable feedback. We have revised the abstract's results section to explicitly mention fall risk reduction. The updated text now reads:</p>
                <p> 
                    <bold>"Treadmill training demonstrated positive effects on balance and fall risk reduction, particularly in elderly individuals with Parkinson&#x2019;s disease, spinal cord injuries, and age-related balance issues. Perturbation-based treadmill training significantly reduced fall rates, while underwater treadmill sessions improved mobility and cognitive function."</bold>
                </p>
                <p> 
                    <bold>Introduction:</bold>
                </p>
                <p>
                    <bold> 1-Reviewer comment&#x00a0;</bold>
                </p>
                <p> You used present or future tense in writing &#x201c;The review will rigorously&#x201d;. Please use the past tense. &#x201c; The focus of this systematic review is to delve deep&#x201d;. Do not use we or our, use the third pronoun like it was</p>
                <p> 1-Author response&#x00a0;</p>
                <p> Thank you for your insightful feedback. We have revised the text to maintain consistency in past tense and third-person narration. The updated sentences now read: 
                    <list list-type="bullet">
                        <list-item>
                            <p>
                                <bold>"The review rigorously evaluated..."</bold> (instead of &#x201c;The review will rigorously...&#x201d;)</p>
                        </list-item>
                        <list-item>
                            <p>
                                <bold>"The focus of this systematic review was to examine..."</bold> (instead of &#x201c;The focus of this systematic review is to delve deep...&#x201d;)</p>
                        </list-item>
                    </list> 
                    <bold>Methodology:</bold>
                </p>
                <p> 1-Reviewer comment&#x00a0;</p>
                <p> Use the updated for of PRISMA flow chart (PRISMA 2020 flow diagram for new systematic reviews which included searches of databases, registers and other sources). The new one included the Identification of studies via databases and registers and Identification of studies via other methods.</p>
                <p> 1-Author response&#x00a0;</p>
                <p> Thank you for your valuable suggestion. We have updated the PRISMA flowchart to the 
                    <bold>PRISMA 2020 format</bold>, which now includes a more detailed representation of the study selection process. The revised flowchart distinguishes between 
                    <bold>identification of studies via databases and registers</bold> and 
                    <bold>identification via other methods</bold> as per the updated PRISMA guidelines.</p>
                <p> &#x00a0;2-Reviewer comment&#x00a0;</p>
                <p> Mention the methods of identifying and removing the duplicates in different databases, the data extraction criteria, the used methods of methodological quality assessment.</p>
                <p> 2-Author response&#x00a0;</p>
                <p> Thank you for your valuable feedback. We have now explicitly detailed the methods used for duplicate removal, data extraction, and quality assessment in the 
                    <bold>Methodology section</bold>. The revised text is as follows:</p>
                <p> Data were extracted independently by two reviewers using a structured data extraction form. Extracted variables included study design, sample size, participant characteristics, treadmill training protocol (duration, intensity, frequency), primary and secondary outcome measures, and key findings. Discrepancies between reviewers were resolved through discussion. After importing search results from multiple databases, duplicates were identified and removed by adding all the data in Microsoft excel, highlighting the duplicates and by manual screening. Risk of bias for each included study was evaluated using the Cochrane Risk of Bias 2.0 tool for randomized controlled trials and the Newcastle-Ottawa Scale for observational studies. The Cochrane RoB 2.0 tool assessed five domains, including bias arising from the randomization process, deviations from intended interventions, missing outcome data, measurement of the outcome, and selection of the reported result. Each domain was rated as low risk, some concerns, or high risk, with an overall rating assigned to each study. To enhance clarity, a traffic plot and a summary plot were generated to visually present the findings</p>
                <p> 3-Reviewer comment&#x00a0;</p>
                <p> Why you split the table including subtitle &#x201c;Treadmill Training for Neurophysiological Improvement in Diseased and Elderly Individuals&#x201d;.</p>
                <p> 3-Author response&#x00a0;</p>
                <p> Thank you for your feedback. The table was originally split to enhance clarity and organization by grouping studies based on their primary focus areas. The subtitle &#x201c;Treadmill Training for Neurophysiological Improvement in Diseased and Elderly Individuals&#x201d; was maintained to ensure a clear distinction between studies targeting neurophysiological improvements and those addressing general balance and mobility.</p>
                <p> However, based on your suggestion, we have revised the table format to ensure better coherence:</p>
                <p> Merged the table sections where appropriate to present a more unified dataset.</p>
                <p> Maintained logical categorization within a single table to improve readability without unnecessary fragmentation.</p>
                <p> Used clear subheadings instead of splitting tables to differentiate study categories while maintaining flow.</p>
                <p> 4-Reviewer comment&#x00a0;</p>
                <p> Where the results of assessment of methodological quality in the result section.</p>
                <p> 4-Author response&#x00a0;</p>
                <p> Thank you for your valuable feedback. We acknowledge that the assessment of methodological quality was not explicitly reported in the results section. To address this, we have now included a detailed summary of the methodological quality of the included studies.</p>
                <p> 5-Reviewer comment&#x00a0;</p>
                <p> Discussion needs more extensive report of finding of this systematic review.</p>
                <p> 5-Author response&#x00a0;</p>
                <p> Thank you for your valuable suggestion. We have expanded the 
                    <bold>Discussion section</bold> to provide a more comprehensive analysis of the key findings of this systematic review. The revised section now includes a more detailed synthesis of the results, highlighting the impact of treadmill training on balance improvement and fall risk reduction, along with its effects on secondary outcomes such as cognitive function and quality of life.</p>
                <p> The updated 
                    <bold>Discussion</bold> now explicitly contrasts the findings of included studies, addressing variations in study design, population characteristics, and intervention protocols. We have also included a comparative discussion of different treadmill training modalities, such as perturbation-based treadmill training and underwater treadmill training, emphasizing their relative effectiveness. Additionally, we have elaborated on the implications of these findings for clinical practice and rehabilitation, while also acknowledging existing research gaps and the need for future studies to establish standardized training protocols.</p>
                <p> </p>
                <p> &#x200b;&#x200b;&#x200b;&#x200b;&#x200b;&#x200b;&#x200b;Very thanks for your comments</p>
            </body>
        </sub-article>
    </sub-article>
</article>
