Ageing effects on knee and ankle joint angles at key events and phases of the gait cycle
Ageing effects on knee and ankle joint angles at key events and phases of the gait cycle
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DOI：
10.1080/03091900500445353
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发表时间：
2006-11-01
影响因子：
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通讯作者：
Sparrow, W. A.
中科院分区：
文献类型：
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作者：
Begg, R. K.;Sparrow, W. A.
这项研究的目的是确定关键步态事件和步态周期主要能量产生/吸收阶段的关节角度是否能够可靠地区分无障碍行走中与年龄相关的退行性病变。采用最大运动分析系统对24例健康成人(青年12例，老年12例)的步态进行了分析。老年参与者表现出明显更多的单次(60.3%比62.3%，p<；0.01)和双次(p<；0.05)支持次数，膝关节屈曲(47.7度比43.0度，p<；0.05)和脚踝足底减少。脚趾外伸(16.8度比3.3度，p=0.053)，膝盖缩小。推举时的兴奋和减少的脚踝背部。挥杆阶段(16.8度比22.0度，p<；0.05)。青年组(31.3°)从立位到摆动相(A(2))的踝关节足底屈曲活动度(A(2))约为老年组(16.9°)的两倍(p<；0.05)。膝关节伸展活动范围的减少表明，老年人倾向于屈膝步态，以帮助接受体重。背部缩小。老年人在秋千阶段的活动意味着脚趾接触障碍物的风险更大。总体而言，结果表明，在步态周期的关键事件/阶段测量关节角度提供了一个有用的指示，表明在无障碍行走期间，与年龄相关的退行性变化控制着下肢的运动轨迹。
The objective of this research was to determine whether joint angles at critical gait events and during major energy generation/absorption phases of the gait cycle would reliably discriminate age-related degeneration during unobstructed walking. The gaits of 24 healthy adults (12 young and 12 elderly) were analysed using the PEAK Motus motion analysis system. The elderly participants showed significantly greater single (60.3% versus 62.3%, p < 0.01) and double (p < 0.05) support times, reduced knee flexion (47.7 degrees versus 43.0 degrees, p < 0.05) and ankle plantar. exion (16.8 degrees compared to 3.3 degrees, p = 0.053) at toe off, reduced knee. exion during push-off and reduced ankle dorsi. exion (16.8 degrees compared to 22.0 degrees, p < 0.05) during the swing phase. The plantar flexing ankle joint motion during the stance to swing phase transition (A(2)) for the young group (31.3 degrees) was about twice (p < 0.05) that of the elderly (16.9 degrees). Reduced knee extension range of motion suggests that the elderly favoured a flexed-knee gait to assist in weight acceptance. Reduced dorsi. exion by the elderly in the swing phase implies greater risk of toe contact with obstacles. Overall, the results suggest that joint angle measures at critical events/phases in the gait cycle provide a useful indication of age-related degeneration in the control of lower limb trajectories during unobstructed walking.