A stricter condition for standing balance after unexpected perturbations
A stricter condition for standing balance after unexpected perturbations
复制标题
DOI：
10.1016/j.jbiomech.2016.01.021
复制
发表时间：
2016-02-29
影响因子：
2.4
通讯作者：
Curtze, Carolin
中科院分区：
文献类型：
--
作者：
Hof, At L.;Curtze, Carolin
为了解释平衡的动态本质，我们引入了《XcoM》的“外推质心”概念（Hof et al., 2005）。站立平衡的法则是：XcoM应该保持在支持基础（bo）内。然而，这一定律没有考虑到压力中心（CoP）由于各种神经和机械延迟而需要时间来移位。将该理论推广到包括CoP的有限反应时间和位移时间。本文介绍了两脚站立的人在突然的姿势扰动下的实验结果。在这种情况下，有效波的面积只是静态波面积的一小部分，约30%。(C) 2016 Elsevier Ltd.版权所有。
In order to account for the dynamic nature of balance, the concept of the 'extrapolated centre of mass' XcoM has been introduced (Hof et al., 2005). The law for standing balance was then formulated as: the XcoM should remain within the Base of Support (BoS). This law, however, does not take into account that the centre of pressure (CoP) needs time to displace due to various neural and mechanical delays.The theory is extended to include the finite reaction- and displacement time of the CoP. Experimental results on humans standing on two feet undergoing sudden postural perturbations are presented. In this case it turns out that the area of the effective BoS is only a fraction, some 30%, of the area of the static BoS. (C) 2016 Elsevier Ltd. All rights reserved.