The influence of horizontal velocity on interlimb symmetry in normal walking
The influence of horizontal velocity on interlimb symmetry in normal walking
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DOI：
10.1016/s0167-9457(03)00047-2
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发表时间：
2003-08-01
影响因子：
2.1
通讯作者：
Potvin, JR
中科院分区：
文献类型：
--
作者：
Goble, DJ;Marino, GW;Potvin, JR
已知水平速度（HV）的变化影响人类运动的许多生物力学特性。本研究的目的是调查这一现象与正常人群中行走的肢体间对称性。收集了20名健全男性双脚在三种相对速度条件（慢，正常和快）下的峰值和时间地面反作用力数据。使用一系列2 x 3重复测量ANOVA分析这些数据，结果显示尽管存在显著的肢体内（单侧）变化，但HV条件下的肢体间（双侧）对称性较高。与此主要发现相反的是两个显着的相互作用效应的站立时间和峰值垂直力分别在推出措施。这些相互作用表明更大的不对称性，在慢HV条件下，在更高的速度下有改善对称性的趋势。虽然这些结果可能提供了一些理论上的洞察步态的对称性的基本性质，他们的整体幅度似乎并没有使目前广泛使用的对称性假设在今天的临床和研究设置无效。(C)2003 Elsevier B.V.保留所有权利。
Changes in horizontal velocity (HV) are known to influence many biomechanical characteristics of human locomotion. The purpose of the present study was to investigate this phenomenon with respect to the interlimb symmetry of walking in a normal population. Peak and temporal ground reaction force data from both feet of 20 able-bodied males were collected at each of three relative velocity conditions (slow, normal and fast). These data were analyzed using of a series of 2 x 3 repeated measures ANOVAs, which revealed a high degree of interlimb (bilateral) symmetry across HV conditions despite significant intralimb (unilateral) changes. In contrast to this primary finding were two significant interaction effects for the stance time and peak vertical force at push-off measures respectively. These interactions indicated greater asymmetries at the slow HV condition with a trend toward improved symmetry at higher velocities. Although these results may provide some theoretical insight into the underlying nature of symmetry in gait, their overall magnitude does not seem to invalidate the current widespread use of symmetry assumptions in clinical and research settings today. (C) 2003 Elsevier B.V. All rights reserved.