期刊
CLINICAL BIOMECHANICS
卷 19, 期 7, 页码 688-694出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.clinbiomech.2004.04.002
关键词
one-leg stance; ground reaction forces; force plate; elderly; impulse; postural steadiness; balance
Objective. To investigate postural steadiness during 30 s of one-leg stance in healthy young and elderly adults, by analysing the pattern of the ground reaction force variability. Design. A laboratory set-up was used to analyse the variability of the ground reaction forces in relation to time as a measure of postural steadiness. Background. The one-leg stance test is a measure considered to assess postural steadiness in a static position by a temporal measurement. The common notion is that a better postural steadiness, i.e. less force variability, allows for longer time standing on one leg. However, there is lack of evidence how Postural steadiness during one-leg stance changes over time. Methods. Twenty-eight healthy elderly and 28 healthy Young adults were tested by means of force plates assessing ground reaction forces while performing one-leg stance. Results. During one-leg stance, two phases could be identified in both groups: First: a dynamic phase, a rapid decrease of force variability, and thereafter a static phase, maintaining a certain level of force variability. During the first 5 s of one-leg stance the force variability decreased significantly more in the Young group resulting in a lower force variability level during the static phase than in the elderly. Conclusions. The difficulties in maintaining the static position in elderly seems dependent on the reduced initial decrease ill force variability and/or musculoskeletal components. We suggest that the first 5 s are crucial when assessing balance during one-leg stance. Relevance Our findings contribute to the knowledge base of one-leg stance performance in young and elderly adults. (C) 2004 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据