Gait & posture最新文献

{"title":"Minimum Toe Clearance Variability in Older Adults with Mild Cognitive Impairment: Differences to Healthy Controls and Effects of a Dance Intervention","authors":"Berit K. Labott ,&nbsp;Fabian Herold ,&nbsp;Corinna Langhans ,&nbsp;Nicole Halfpaap ,&nbsp;Bernhard Grässler ,&nbsp;Anita Hökelmann ,&nbsp;Notger G. Müller ,&nbsp;Daniel Hamacher","doi":"10.1016/j.gaitpost.2025.04.033","DOIUrl":"10.1016/j.gaitpost.2025.04.033","url":null,"abstract":"<div><h3>Background</h3><div>Falls in older adults with mild cognitive impairment (MCI) are a major health issue. For healthy individuals, higher variability in minimum toe clearance (MTC) during gait is associated with the risk of tripping-related falls and dance intervention reduces MTC variability. Such empirical evidence is lacking for individuals with MCI.</div></div><div><h3>Research Question</h3><div>We aimed to assess differences in MTC variability between healthy older adults and older adults with MCI. Furthermore, we analysed the effects of a six-month dance intervention on MTC variability in older adults with MCI.</div></div><div><h3>Methods</h3><div>We recruited community-dwelling cognitively healthy control participants (n=34) and participants with MCI (n=55). All participants underwent gait assessment using inertial sensors. In a cohort study, MTC variability of healthy vs. MCI participants was compared using Welch’s t-test. There were no significant differences in the participant’s characteristics except for cognitive performance. In a randomised controlled trial, participants with MCI were randomly allocated to either an intervention (IG, n=27) or a passive control group (CG, n=28). IG was required to attend a twice-weekly 90-minute dance program for six months. After six months, the gait assessment was repeated in both groups of MCI participants, and the effect of the dance intervention on MTC variability was assessed using 2-level random intercept models. Additionally, the mean MTC was analysed in a secondary analysis.</div></div><div><h3>Results</h3><div>Adults with MCI exhibited a significantly higher MTC variability compared to healthy adults (p=.016, d=0.53), but no difference was found in the mean MTC (p=.980, d&lt;0.01). The dance intervention did not improve either MTC variability (p=.182) or mean MTC (p=.742).</div></div><div><h3>Significance</h3><div>The higher MTC variability in older adults with MCI compared to healthy controls may contribute to their higher fall risk. Future studies should investigate the effects of an individually tailored dance intervention, and other intervention approaches on MTC variability and fall risk.</div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"121 ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of systematic displacement of the lateral knee marker on gait kinematics using the virtual knee alignment device and the Plug-in Gait model","authors":"Lisa Schneemann ,&nbsp;Dagmar Linnhoff ,&nbsp;Bettina Wollesen ,&nbsp;Klaus Mattes ,&nbsp;Inke Marie Albertsen","doi":"10.1016/j.gaitpost.2025.04.035","DOIUrl":"10.1016/j.gaitpost.2025.04.035","url":null,"abstract":"<div><h3>Background</h3><div>Marker-based motion capture is widely used in clinical gait analysis, but errors due to incorrect marker placement can impact kinematic results. When using the Plug-in Gait model (PiG, Vicon, Oxford, UK) the virtual Knee Alignment Device (vKAD, Prophysics, Kloten, Switzerland) is designed to automatically correct marker displacements on the lateral shank and femur. However, the impact of lateral knee marker displacement on gait kinematics using vKAD has not been studied.</div></div><div><h3>Research question</h3><div>Does systematic lateral knee marker displacement have a significant effect on the maximum angles of the knee (sagittal, frontal, transverse) and hip joint (transverse) during swing phase when using PiG and vKAD?</div></div><div><h3>Methods</h3><div>Twelve healthy adults (27.9 ± 7 years, 173.1 ± 9 cm, 68.9 ± 7 kg) underwent gait analysis using PiG and vKAD in five marker placement conditions of the lateral knee marker on both legs. Conditions included the correct anatomical position (reference) and systematic displacements of 1 cm and 2 cm anterior/posterior to the reference. A two-way repeated ANOVA compared maximum joint angles of the knee (sagittal, frontal, transverse) and hip (transverse) during the swing phase between conditions.</div></div><div><h3>Results</h3><div>All selected joint angles were significantly affected by the marker placement conditions. A 2 cm displacement to the reference position resulted in the following kinematic deviations: hip internal rotation 7°/-11°, knee flexion 2°/-4°, knee varus/adduction 7°/-8°, and knee internal rotation 1°/-4°.</div></div><div><h3>Significance</h3><div>Even a 1 cm anterior displacement of the lateral knee marker led to an unphysiological knee varus range of motion in the swing phase, overestimation hip internal rotation. These findings have practical implications for researchers and clinicians as they can serve to optimize the knee joint axis and enhancing accuracy of instrumental gait analysis. Improved accuracy, particularly in hip rotation, is crucial for clinicans working with patients like those with cerebral palsy.</div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"121 ","pages":"Pages 129-134"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The positional effects of weight-bearing foot and ankle musculature on muscle stiffness using shear wave elastography","authors":"Jesus Arellano,&nbsp;Olivia Wulbert,&nbsp;Amber Schwarting,&nbsp;Abbis Jaffri","doi":"10.1016/j.gaitpost.2025.04.031","DOIUrl":"10.1016/j.gaitpost.2025.04.031","url":null,"abstract":"<div><h3>Background</h3><div>Shear wave elastography (SWE), an ultrasound imaging method, assesses muscle tissue stiffness by measuring the speed of sound waves traveling through it, with faster speeds indicating greater stiffness. It is unclear whether differences in foot and ankle muscle stiffness depend on changes in loading volume. The purpose of this study is to assess stiffness changes of foot and ankle muscles between non-weight-bearing and weight-bearing positions.</div></div><div><h3>Methods</h3><div>Sixty individuals (38F, age: 23.4 ± 3.20 yrs., weight: 74.9 ± 19.7 kg, height: 170.0 ± 8.70 cm) participated in this study. SWE measures were performed using an ultrasound scanner. Shear wave elastography mean velocity (m/s) values were recorded for the tibialis posterior, tibialis anterior, peroneal, and abductor hallucis muscles in both non-weight-bearing (sitting) and weight-bearing (standing) positions. Paired <em>t</em>-test was performed to analyze differences in muscle stiffness.</div></div><div><h3>Findings</h3><div>A significant difference in muscle stiffness between non-weight-bearing and weight-bearing positions was found for tibialis posterior (p &lt; 0.01, effect size (ES) = -0.97) and abductor hallucis (p &lt; 0.01, ES = -1.08). No significant differences existed between positions for tibialis anterior (p = 0.43, ES = 0.12) and peroneal muscles (p = 0.13, ES = -0.16).</div></div><div><h3>Interpretation</h3><div>Abductor hallucis and tibialis posterior muscles of the foot and ankle demonstrate significant increases in stiffness from a non-weight-bearing to weight-bearing task. Muscle stiffness of tibialis anterior and peroneal muscles is not dependent on these positions. Abductor hallucis and tibialis posterior may contribute to cushioning and support for the foot and ankle during weight-bearing tasks.</div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"121 ","pages":"Pages 108-114"},"PeriodicalIF":2.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Movement analysis congress from yesterday to today: Text mining analysis","authors":"Orhan Ozturk ,&nbsp;Mansur Alp Tocoglu","doi":"10.1016/j.gaitpost.2025.04.023","DOIUrl":"10.1016/j.gaitpost.2025.04.023","url":null,"abstract":"<div><h3>Background</h3><div>Despite the constant publication of motion analysis studies in the literature, the current focus of motion analysis laboratories is often showcased at conferences. Papers and abstracts presented at these events are a crucial source of information for scientists regarding the direction of research in the field. The most comprehensive congress in Europe for presenting current movement analysis studies for adults and children is the European Society for Movement Analysis in Adults and Children (ESMAC)</div></div><div><h3>Research question</h3><div>How have motion analysis study trends changed in the last 15 years based on the papers presented at ESMAC congresses?</div></div><div><h3>Methods</h3><div>The titles of abstracts presented at the ESMAC congress between 2008 and 2023 were included in the study. Text mining was performed using the k-means algorithm in Python. Trend changes were analyzed in three groups of five years each.</div></div><div><h3>Results</h3><div>A total of 3038 paper titles presented at the ESMAC congress were included in the study. The most prominent term in the word cloud obtained from the paper titles was 'Cerebral Palsy.' The trending topics in each 5-year period were Cerebral Palsy, Gait Analysis, Balance, Foot, and Knee. The highest number of studies was presented in 2019 (n = 334), and the lowest in 2014 (n = 134).</div></div><div><h3>Significance</h3><div>While Cerebral Palsy remains a central focus in movement analysis, the emphasis has shifted over time. Technological advances have significantly enhanced motion analysis, with trending topics in each 5-year period.</div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"121 ","pages":"Pages 1-8"},"PeriodicalIF":2.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dominant or nondominant leg, which one is used to recover balance after a simulated slip during standing?","authors":"Diané Brown,&nbsp;Jiyun Ahn,&nbsp;Caroline Simpkins,&nbsp;Feng Yang","doi":"10.1016/j.gaitpost.2025.04.028","DOIUrl":"10.1016/j.gaitpost.2025.04.028","url":null,"abstract":"<div><h3>Background</h3><div>Standing-slips are used as a fall reduction training modality or fall risk assessment tool. It is unclear whether the trainees prefer one leg over the other to recover their balance after a standing-slip.</div></div><div><h3>Research questions</h3><div>1) Do the trainees always adopt the dominant leg to recover balance following an unexpected standing-slip perturbation? and 2) What are the determinants for the recovery leg selection?</div></div><div><h3>Methods</h3><div>Eighty-six participants were exposed to a large-scale slip with varying peak belt speed while standing on a treadmill. Depending on the agreement between the recovery leg and the dominant leg, 54 participants were classified into the congruent group and the other 32 in the conflictive group. The demographic information and peak belt speed were compared between these two groups.</div></div><div><h3>Results</h3><div>The peak belt speed was significantly different between the two groups (1.47 ± 0.49 m/s for conflictive vs. 1.26 ± 0.37 m/s for congruent, <em>p</em> = 0.026). Individuals tended to use their dominant leg to recover balance after the slip when the peak belt speed was small. The selection of the recovery leg became random when the peak belt speed was increased. The receiver operating characteristics analysis revealed a high accuracy of the peak belt speed in predicting the group classification (the area under the curve = 0.891). The Youden index identified the cutoff value of the peak belt speed (1.2 m/s) that maximized the prediction accuracy.</div></div><div><h3>Significance</h3><div>The identified threshold of the peak belt speed could provide practical guidance for designing standing-slip-based perturbation training programs for diverse populations.</div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"121 ","pages":"Pages 19-24"},"PeriodicalIF":2.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pregnant and postpartum women gait kinematics parameters: A systematic review and meta-analysis","authors":"Heloisa da Costa Souza ,&nbsp;Rayane Quintão Castro ,&nbsp;Maria Eduarda de Oliveira Gonçalves ,&nbsp;Gabriela Vieira Caneco ,&nbsp;Angélica Lorena dos Santos Oliveira ,&nbsp;Letícia Tagliati Nogueira ,&nbsp;Nathalia de Souza Abreu Freire ,&nbsp;Fabiana Roberta Nunes Carnaúba ,&nbsp;Diogo Simões Fonseca","doi":"10.1016/j.gaitpost.2025.04.030","DOIUrl":"10.1016/j.gaitpost.2025.04.030","url":null,"abstract":"<div><h3>Background</h3><div>During pregnancy, adaptive gait mechanisms are hypothesized to develop to accommodate physiological changes from fetal growth.</div></div><div><h3>Research question</h3><div>What are the average values and variations of gait kinematic and spatiotemporal parameters in pregnant and postpartum women?</div></div><div><h3>Methods</h3><div>A bibliographic search was conducted in Scopus, PubMed, Web of Science, and Embase up to February 3rd, 2025. Observational studies and randomized controlled trials assessing gait kinematic or spatiotemporal parameters in pregnant and postpartum women were included. Risk of bias was assessed using JBI Critical Appraisal Tools. Standardized mean difference and confidence intervals compared pregnancy, postpartum, and control groups. The I² index assessed study heterogeneity; a random-effects model was used if I² exceeded 40 %.</div></div><div><h3>Results</h3><div>Thirty-two studies were included. Meta-analyses were performed for sagittal and transverse pelvic ROM, gait speed, cadence, stride length, double support time, step length, and step width. No significant differences were found in sagittal and transverse pelvic ROM between the second and third trimesters. Pregnant women walked more slowly than postpartum and non-pregnant women, but no significant differences in gait speed, cadence, stride length, step length, double support time, or step width were found between trimesters. Findings from non-pooled studies indicated increased pelvic tilt, knee flexion, and lateral foot progression angle, with decreased hip extension and ankle plantarflexion. Pregnant women walked with reduced step length, swing phase, and single support time, alongside increased double support duration. These changes were most prominent in the 3rd trimester, some appearing in the 2nd trimester, and tended to lessen postpartum, though spatiotemporal disparities remained compared to non-pregnant women. The persistence of kinematic differences remains uncertain.</div></div><div><h3>Significance</h3><div>This study enhances understanding of biomechanical gait adaptations during pregnancy and postpartum, providing a foundation for more effective, patient-centered care.</div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"121 ","pages":"Pages 25-36"},"PeriodicalIF":2.2,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predictors of gait speed post-stroke: A systematic review and meta-analysis","authors":"Amie Marie Jasper ,&nbsp;Rolando T. Lazaro ,&nbsp;Saurabh P. Mehta ,&nbsp;Lindsay A. Perry ,&nbsp;Kathryn Swanson ,&nbsp;Kyle Reedy ,&nbsp;Jeffrey Schmidt","doi":"10.1016/j.gaitpost.2025.04.029","DOIUrl":"10.1016/j.gaitpost.2025.04.029","url":null,"abstract":"<div><h3>Background</h3><div>While gait speed serves as a clinical marker and health indicator, there is a paucity of a consolidated review of the factors that are most predictive of gait speed across the clinical stages of stroke recovery.</div></div><div><h3>Research question</h3><div>What are predictors of gait speed in the acute, subacute and chronic phase of stroke, categorized according to International Classification of Functioning, Health, and Disability (ICF)?</div></div><div><h3>Methods</h3><div>A systematic search was conducted using four electronic databases following the PRISMA guideline. Included studies were cross-sectional, cohort and case-control reporting the predictors of gait speed, published from January 2000 to July 2024, and involved participants 18 years or older with diagnosis of stroke. Four meta-analyses were performed.</div></div><div><h3>Results</h3><div>The initial search yielded 311 articles. After screening, 32 articles were included in the final analysis. In all clinical stages of stroke, age was the most common predictor of gait speed, followed by admission walking speed, Berg Balance Scale (BBS) score and time since onset. Knee extensor strength emerged as a predictor in three studies, all in the chronic stage. The meta-analyses indicated that older age was associated with slower discharge gait speed (SMD: −0.004 [-0.01, −0.001]; p &lt; 0.0001) while higher BBS scores at admission were associated with a larger change in gait speed between admission and discharge (SMD: 0.17 [0.06, 0.28]; p = 0.002). <em>Significance</em><strong>.</strong> Understanding the modifiable factors can help clinicians target interventions and seek additional care while non-modifiable factors can guide the prognosis of walking function in people post stroke.</div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"121 ","pages":"Pages 70-77"},"PeriodicalIF":2.2,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the static stability of older adults: A study on foot sole vibration intensities and locations","authors":"Yunqi Tang ,&nbsp;Peiyao Liang ,&nbsp;Pui Wah Kong ,&nbsp;Hui Ren ,&nbsp;Shizhe Cheng ,&nbsp;Xinyue Li ,&nbsp;Rong Wang ,&nbsp;Meixi Li ,&nbsp;Lin Guo ,&nbsp;Yuhong Niu","doi":"10.1016/j.gaitpost.2025.04.027","DOIUrl":"10.1016/j.gaitpost.2025.04.027","url":null,"abstract":"<div><h3>Background</h3><div>Falls are a major public health concern for older adults, driven by age-related declines in somatosensory feedback which is critical for postural stability. Plantar vibratory stimulation may enhance balance, yet the optimal parameters remain unclear.</div></div><div><h3>Research question</h3><div>How may different foot sole vibration intensities and locations improve static stability in older adults?</div></div><div><h3>Methods</h3><div>Eighteen healthy older adults (aged 66.6 ± 3.1 years) received mechanical vibrations at 0 %, 90 %, and 130 % of their sensory threshold, applied to the forefoot &amp; heel (F&amp;H) and midfoot (MF) of both feet, in eyes-open (EO) and eyes-closed (EC) conditions. Static stability was assessed using center of pressure (COP) metrics, including sway velocity, average sway amplitude, and sway area in the anterior-posterior (AP) and mediolateral (ML) directions.</div></div><div><h3>Results</h3><div>Compared to 0 %, both 90 % and 130 % intensities significantly reduced total sway velocity, AP sway velocity, ML sway velocity, and AP sway amplitude (p &lt; 0.05) in the EO condition. In the EC condition, these effects persisted (p &lt; 0.05), with the additional benefits of reduced ML sway amplitude and total sway area (p &lt; 0.05), and no consistent differences between locations (F&amp;H vs. MF).</div></div><div><h3>Significance</h3><div>Moderate vibration intensities enhance static stability across different foot sole locations, suggesting that footwear and insoles incorporating vibration may serve as potential strategies for fall prevention among older adults.</div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"121 ","pages":"Pages 37-43"},"PeriodicalIF":2.2,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influence of concussion history on turning gait performance","authors":"Eric J. Shumski ,&nbsp;Deborah A. Barany ,&nbsp;Julianne D. Schmidt ,&nbsp;Robert C. Lynall","doi":"10.1016/j.gaitpost.2025.04.026","DOIUrl":"10.1016/j.gaitpost.2025.04.026","url":null,"abstract":"<div><h3>Objective</h3><div>Straight path gait under dual-task conditions recovers ∼2 months post-concussion. However, turning gait is more complex than straight path gait and may take longer to recover, especially under dual-task conditions. Therefore, the purpose of this study was to compare how individuals with and without a concussion history may differ in (1) turning gait spatiotemporal characteristics during single- and dual-task (serial 7 s) conditions, (2) the dual-task cost on the spatiotemporal characteristics and cognitive outcomes, and (3) the subjectively perceived task demands of single- and dual-task turning gait.</div></div><div><h3>Methods</h3><div>Twenty-three individuals with (age: 20.2 ± 1.9 years, BMI: 22.9 ± 2.7 kg/m², 60.9 % female, 44.7months [95 % CI=23.6, 65.7] months post-concussion) and 23 individuals without (age: 20.7 ± 1.7years, BMI: 22.4 ± 2.3 kg/m², 60.9 % female) a concussion history participated. Participants completed 3 trials of single-task serial subtraction, single-task figure-of-8 gait, and dual-task figure-of-8 gait. After each walking condition, participants completed the NASA Task Load Index to measure task demands.</div></div><div><h3>Results</h3><div>There was no significant group by cognitive load interaction for turning gait metrics (p-range=0.371–0.889) or task demands (i.e., NASA Task Load Index) (p = 0.598). There was no difference between groups for dual-task cost cognitive or gait outcomes (p-range=0.227–0.937). All participants displayed slower gait velocity (p &lt; 0.001, Hedge’s g=1.149), greater double leg support percent (p &lt; 0.001, Hedge’s g= 0.649), and wider step width (p = 0.003, Hedge’s g=0.644) during dual-task versus single-task figure-of-8 gait. Individuals with a concussion history displayed shorter step length compared to individuals without a concussion history (p = 0.014, Hedge’s g=0.664). All participants reported significantly lower task demands during single-task versus dual-task gait conditions (p &lt; 0.001, Hedge’s g=1.532).</div></div><div><h3>Conclusion</h3><div>Those with a concussion history demonstrated moderately shorter step length, but the lack of any other significant findings limits clinical applicability. Greater perceived dual-task demands can be used to ensure more self-perceived challenges are being utilized during rehabilitation<strong>.</strong></div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"121 ","pages":"Pages 93-100"},"PeriodicalIF":2.2,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construct validity of markerless three-dimensional gait biomechanics in healthy older adults","authors":"Andreia Carvalho ,&nbsp;Jos Vanrenterghem ,&nbsp;Sílvia Cabral ,&nbsp;Ana M. d'Assunção ,&nbsp;Filomena Carnide ,&nbsp;António P. Veloso ,&nbsp;Vera Moniz-Pereira","doi":"10.1016/j.gaitpost.2025.04.022","DOIUrl":"10.1016/j.gaitpost.2025.04.022","url":null,"abstract":"<div><h3>Background and aim</h3><div>Gait changes due to aging can result in functional limitations and a higher risk of falls, with older adults showing alterations in joint angles and moments. Marker-based gait analysis is not widely used in clinical settings due to its complexity and discomfort, especially in older adults. Recent advances in markerless motion capture, such as Theia3D, offer a promising alternative. This study aims to assess the construct validity of a markerless motion capture system for gait analysis in healthy older adults.</div></div><div><h3>Methods</h3><div>A cross-sectional study included 30 healthy community-dwelling older adults. Gait data was collected using marker-based and markerless motion capture systems in randomized order, with participants wearing tight-fitting minimal clothes plus 46 reflective markers attached, or their usual clothes, respectively. Joint kinematics (including range of motion) and kinetics were analyzed, and correlations between methods (Rxy) were assessed. Bland&amp;Altman analysis was used to measure agreement. Root-mean-square differences (RMSD) were computed. Acceptable thresholds were set at ≤ 5º for kinematic and at ≤ 10 % of signal amplitude for kinetics.</div></div><div><h3>Results</h3><div>Strong correlations (Rxy≥0.7) were found between the systems for sagittal plane kinematics (except for the pelvis), particularly for knee and ankle joints. A low agreement was detected in sagittal plane hip and pelvis kinematics, along with RMSD exceeding 5º. Weaker correlations and poor agreement were observed for transverse and frontal plane motions. Overall strong correlations were found for kinetics, except for the joint ankle inversion-eversion moment, and poor agreement for the frontal and transverse planes.</div></div><div><h3>Conclusion</h3><div>Overall markerless motion capture demonstrated good construct validity for measuring sagittal plane gait lower-limb gait kinematics (excluding pelvis) and kinetics in healthy older. However, considering the agreement between methods and the results for the other movement planes, further validation is required before markerless and marker-based systems can be used interchangeably in gait assessments.</div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"120 ","pages":"Pages 217-225"},"PeriodicalIF":2.2,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}