Subjects: Mechanics >> Biomechanics submitted time 2022-12-21 Cooperative journals: 《应用力学学报》
Abstract：
Objective The research on the effect of age and gender on the biomechanical characteristics of walking gait has not been fully explored.In this study,the effects of age and gender on the biomechanical characteristics of human gait patterns were explored by comparing the gait differences of healthy people with different ages and genders.Methods The 3D motion capture system,force measuring platform and biomechanical software were used to collect and calculate the spatiotemporal parameters,lower limb kinematics and kinetics of 28 healthy elderly people(14 men and 14 women)and 30 healthy young people(15 men and 15 women).Two-way ANOVA was used for statistical analysis.Results Compared with the young people,seven parameters of the elderly people including maximum plantar flexion angle,moment of ankle joint,maximum adduction angle,valgus moment of knee joint,maximum external rotation angle of hip joint,internal and external rotation motion range,and maximum inward GRF were smaller,while maximum external rotation angle of knee joint was larger(P<0.05).Compared with the female group,the male group had a wider step; the maximum internal rotation angle and internal rotation range of ankle joint,the maximum adduction angle and the maximum internal rotation angle of hip joint,the maximum downward inclination angle and up and down inclination motion range of pelvis,and the maximum backward plantar reaction force of males were smaller than those of females(P<0.05).Age also had different effects on gait pattern in different gender groups.Compared with the young male group,the older male group had significantly lower stride speed,step length and stride length(P<0.05); the maximum dorsiflexion angle of ankle joint,maximum forward angle and minimum forward angle of pelvis were significantly increased(P<0.05),and the maximum flexion moment of knee joint was significantly decreased(P<0.05).Conclusion There are significant interactions between age and gender factors in step speed; step length; stride length; maximum extension angle of ankle; maximum flexion moment of knee; maximum flexion angle,extension angle,flexion extension range of motion,maximum extension moment and maximum flexion moment of hip; maximum anteversion angle and minimum anteversion angle of pelvic and maximum ground reaction force of post.In clinical gait analysis and research,we should pay attention to the influence of age and gender on the evaluation indexes of gait biomechanics,and establish a healthy control group with matching age and gender.
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