Stride variability in human gait: the effect of stride frequency and stride length
Stride variability in human gait: the effect of stride frequency and stride length
复制标题
DOI：
10.1016/s0966-6362(03)00030-4
复制
发表时间：
2003-08-01
期刊：
影响因子：
2.4
通讯作者：
Pailhous, J
中科院分区：
文献类型：
--
作者：
Danion, F;Varraine, E;Pailhous, J
本研究主要针对人体步态步幅的时空变异性进行研究。我们测定了步频(F)和步长(L)对这些参数的影响。8名健康受试者在跑步机上行走，使用25种不同的FL组合(0.95；L；1.5英寸和0.8<；F<；1.26赫兹)。结果表明，随着步幅参数的变化，空间和时间的变异性趋于一致地增加。此外，还发现(1)在F=1赫兹时步幅变异性最小；(2)步幅变异性随着L的减小而增加。在其他试验中，受试者以不同的速度自由行走。虽然通常假设自由选择的行为在变异性方面是最优的，但我们的数据表明，在人类步态中并不总是如此。(C)2003 Elsevier Science B.V.保留所有权利。
This study focused on spatial and temporal variability of the stride in human gait. We determined the role of stride frequency (F) and stride length (L) on those parameters. Eight healthy subjects walked on a treadmill using 25 different FL combinations (0.95 < L < 1.5 in, and 0.8 < F < 1.26 Hz). The results showed that spatial and temporal variabilities tend to increase in concert with respect to change in stride parameters. In addition, stride variability was found (1) to be minimal at F= I Hz; and (2) to increase with smaller L. During additional trials, subjects walked freely at various speeds. Although it is generally hypothesized that freely chosen behaviors are optimal in terms of variability, our data show that this is not always the case in human gait. (C) 2003 Elsevier Science B.V. All rights reserved.