The effects of age on medio-lateral stability during normal and narrow base walking
The effects of age on medio-lateral stability during normal and narrow base walking
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DOI：
10.1016/j.gaitpost.2008.02.009
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发表时间：
2008-10-01
期刊：
影响因子：
2.4
通讯作者：
Shumway-Cook, Anne
中科院分区：
文献类型：
--
作者：
Schrager, Matthew A.;Kelly, Valerie E.;Shumway-Cook, Anne
我们研究了窄基底（NB）行走时相对于正常步态的额平面稳定性的年龄相关差异。对巴尔的摩老龄化纵向研究（BLSA）的参与者进行了横断面分析，数据来自BLSA运动分析实验室。参与者是34名年龄在54-92岁之间没有跌倒史的成年人。我们测量了NB步态时的步错率、时空参数、额平面稳定性以及正常和NB步态时的步态变异性。在NB步态中，步错率与年龄相关的线性增加不显著（P = 0.12）。随着年龄的增长，步宽增大（P = 0.002），步长和步幅速度减小（P < 0.001）。尤其是在NB步法中。与正常步态相比，NB期间与年龄相关的中外侧（M-L）质心（COM）峰值速度（P < 0.001）和位移（P = 0.005）的增加也更大。随着年龄的增长，两种情况下步幅速度（P = 0.001）和步长（P < 0.001）的变异性均增大。与M-L COM稳定性相关的年龄相关差异表明，NB步态期间COM控制的量化可以改善对跌倒风险增加的老年人的识别。Elsevier B.V.出版
We examined age-related differences in frontal plane stability during performance of narrow base (NB) walking relative to usual gait. A cross-sectional analysis of participants from the Baltimore Longitudinal Study of Aging (BLSA) was performed on data from the BLSA Motion Analysis Laboratory. Participants were 34 adults aged 54-92 without history of falls. We measured step error rates during NB gait and spatial-temporal parameters, frontal plane stability, and gait variability during usual and NB gait. There was a non-significant age-associated linear increase in step error rate (P = 0.12) during NB gait. With increasing age, step width increased (P = 0.002) and step length and stride velocity decreased (P < 0.001). especially during NB gait. Age-associated increases in medio-lateral (M-L) center of mass (COM) peak velocity (P < 0.001) and displacement (P = 0.005) were also greater during NB compared to usual gait. With increasing age there was greater variability in stride velocity (P = 0.001) and step length (P < 0.001) under both conditions. Age-associated differences related to M-L COM stability Suggest that the quantification of COM control during NB gait may improve identification of older persons at increased falls risk. Published by Elsevier B.V.