Age-associated differences in the gait pattern changes of older adults during fast-speed and fatigue conditions: results from the Baltimore longitudinal study of ageing
Age-associated differences in the gait pattern changes of older adults during fast-speed and fatigue conditions: results from the Baltimore longitudinal study of ageing
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DOI：
10.1093/ageing/afq113
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发表时间：
2010-11-01
期刊：
影响因子：
6.7
通讯作者：
Ferrucci, Luigi
中科院分区：
文献类型：
--
作者：
Ko, Seung-uk;Hausdorff, Jeffrey M.;Ferrucci, Luigi
研究方法：在183名巴尔的摩老年人纵向研究参与者（平均73 +/-9岁）中，研究了三种条件下的行走：（i）通常速度，（ii）快速和（iii）活动后行走，这些参与者可以在没有辅助的情况下行走。内侧-外侧（ML）髋关节产生的机械功消耗随着年龄的增长而下降，在髋关节伸展期间，快速行走和后活动的下降率更大（P值分别为0.032和0.027）。结论：这些发现表明老年人经历步态速度和髋关节ML控制的恶化下降，这在具有挑战性的行走中是明显的。旨在改善步态速度和髋关节和踝关节ML关节功率的运动计划可能有助于逆转老年人步态模式中与年龄相关的变化。
Methods: investigated walking under three conditions: (i) usual speed, (ii) fast speed and (iii) post-activity in 183 Baltimore Longitudinal Study of Aging participants (mean 73 +/- 9 years) who could walk unassisted.Results: across all tasks, gait speed decreased with older age and this decline rate was exacerbated in the fast-speed walking task, compared with usual-speed walking (P < 0.001). Medial-lateral (ML) hip-generative mechanical work expenditure declined with age and the rate of decline was steeper for walking at fast speed and post-activity during hip extension (P = 0.032 and 0.027, respectively), compared with usual-speed walking.Conclusions: these findings indicate that older adults experience exacerbated declines in gait speed and ML control of the hip, which is explicitly evident during challenging walking. Exercise programmes aimed at improving gait speed and ML joint power from hip and ankle may help reverse age-associated changes in gait pattern among older adults.