Age-Related Changes in Distance From Center of Mass to Center of Pressure During One-Leg Standing
Age-Related Changes in Distance From Center of Mass to Center of Pressure During One-Leg Standing
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DOI：
10.1080/00222895.2014.979756
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发表时间：
2015-07-01
影响因子：
1.4
通讯作者：
Asaka, Tadayoshi
中科院分区：
文献类型：
--
作者：
Mani, Hiroki;Hsiao, Shih-Fen;Asaka, Tadayoshi
。本研究的目的是阐明在单腿站立(OLS)任务中，压力中心(COP)到重心(COM)的距离(COP-COM距离)对年龄的影响。健康的老年人和年轻人(n=11)参与了这项研究。根据COM与COP之间的关系，将任务分为加速、减速和稳定三个阶段。老年组COP-COM距离在加速期显著缩短，在减速期和稳定期显著增加。此外，这些阶段的距离与OLS时间呈负相关。作者的结论是，老年人在抬腿后对COM移位的较大制动反应，以及在OLS过程中产生更大的惯性力以保持COM位置，从而缩短了OLS时间。
. The purpose of this study was to clarify the age-related effects of distances from the center of pressure (COP) to the center of mass (COM) (COP-COM distances) during one-leg standing (OLS) task. Healthy old and young adults (n = 11 each) participated in this study. The authors divided the task into 3 phases (accelerated, decelerated, and steady) based on the relationship between COM and COP. COP-COM distances in the older group were significantly reduced during the accelerated phase, then significantly increased during the decelerated and steady phases. Furthermore, distances during these phases correlated inversely with OLS time. The authors conclude that OLS time is shortened by the larger braking response to COM shifts just after leg-lifting, and the production of larger inertial forces to maintain COM position during the OLS in older individuals.