Gait & posture · 2025
Effects of 30-min of walking on knee total joint moment asymmetry in asymptomatic adults.
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Halliwell Carson, Hannigan Meaghan, Matthews Ryan, Doan Anne, MacLeod Rose, Moyer Rebecca
Аннотация
INTRODUCTION: Gait asymmetry is considered an indicator of healthy gait and used in clinical and research settings to assess movement. While walking is commonly prescribed to promote cardiovascular health and assess gait under controlled conditions, prolonged walking may disrupt gait asymmetry. This study examined changes in knee total joint moment (TJM) asymmetry following a 30-min treadmill walk in asymptomatic adults.
METHODS: Participants completed five overground walking trials at a self-selected speed before and after a 30-min treadmill walk. Three-dimensional motion capture and ground reaction forces were used to calculate knee joint moments. The TJM was calculated as a composite measure of the net external knee frontal, sagittal, and transverse moments, and absolute inter-limb asymmetry in the TJM was calculated. Paired samples t-tests and 95 % bootstrapped confidence intervals were used to assess the expected change in TJM asymmetry following the 30-min walk. Statistical parametric mapping assessed differences in knee frontal, sagittal and transverse plane moments before and after the treadmill walk.
RESULTS: Twenty-one asymptomatic adults (age 61 ± 10 years, 14 F/7 M) were recruited for this study. Following the treadmill walk TJM asymmetry increased by 10.1 % (95 %CI: 4.88-16.1, p = 0.005, d=0.73), with 76 % of participants increasing asymmetry post-walk driven primarily by an increase in the peak frontal plane moment (p = 0.013).
CONCLUSIONS: This study provides a benchmark for clinicians and researchers to gauge the expected change in TJM asymmetry in healthy adults following a 30-min walking intervention. We observed that asymmetry increases by approximately 5-16 % in this population; however, high inter-individual variability was noted.
METHODS: Participants completed five overground walking trials at a self-selected speed before and after a 30-min treadmill walk. Three-dimensional motion capture and ground reaction forces were used to calculate knee joint moments. The TJM was calculated as a composite measure of the net external knee frontal, sagittal, and transverse moments, and absolute inter-limb asymmetry in the TJM was calculated. Paired samples t-tests and 95 % bootstrapped confidence intervals were used to assess the expected change in TJM asymmetry following the 30-min walk. Statistical parametric mapping assessed differences in knee frontal, sagittal and transverse plane moments before and after the treadmill walk.
RESULTS: Twenty-one asymptomatic adults (age 61 ± 10 years, 14 F/7 M) were recruited for this study. Following the treadmill walk TJM asymmetry increased by 10.1 % (95 %CI: 4.88-16.1, p = 0.005, d=0.73), with 76 % of participants increasing asymmetry post-walk driven primarily by an increase in the peak frontal plane moment (p = 0.013).
CONCLUSIONS: This study provides a benchmark for clinicians and researchers to gauge the expected change in TJM asymmetry in healthy adults following a 30-min walking intervention. We observed that asymmetry increases by approximately 5-16 % in this population; however, high inter-individual variability was noted.