Differences in Rapid Initiation and Termination of Voluntary Postural Sway Associated with Ageing and Falls-Risk
Differences in Rapid Initiation and Termination of Voluntary Postural Sway Associated with Ageing and Falls-Risk
复制标题
与衰老和跌倒风险相关的自愿姿势摇摆的快速启动和终止的差异
DOI：
--
复制
发表时间：
2010
影响因子：
1.4
通讯作者：
R. Barrett
中科院分区：
文献类型：
--
作者：
Murray G. Tucker;J. Kavanagh;S. Morrison;R. Barrett
摘要 作者研究了年轻人 (n = 25) 和健康老年人 (n = 48) 在反应时间方面的差异，以及在快速启动和终止自愿姿势摇摆过程中压力中心 (COP) 和质心 (COM) 运动之间的关系。根据感觉运动功能的生理特征评估分数，将老年人分为低跌倒风险组和高跌倒风险组。与年轻人相比，跌倒风险低的老年人在前后摇摆启动期间反应时间较慢，并且在前后和中间摇摆启动以及前后连续自愿摇摆期间 COP-COM 分离减少。与年轻人相比，高跌倒风险的老年人在所有反应方向上的起始和终止反应时间较慢，并且在前后和中间方向上的摇摆起始和持续自愿摇摆过程中 COP-COM 分离减少。与低跌倒风险的老年人相比，高跌倒风险的老年人在所有反应方向上的启动和终止反应时间较慢，并且在内侧连续自愿摇摆期间 COP-COM 分离减少。反应时间和 COP-COM 测量可显着预测判别模型中的群体状态，其敏感性和特异性为 72-100%。总体而言，这些发现强调了与年龄相关的感觉运动功能下降与姿势反应时间减慢和姿势稳定性下降导致跌倒风险增加之间的重要关联。
ABSTRACT The authors examined differences between young adults (n = 25) and healthy older adults (n = 48) in reaction time and the relations between center of pressure (COP) and center of mass (COM) motions during rapid initiation and termination of voluntary postural sway. Older adults were divided into low and high falls-risk groups based on Physiological Profile Assessment scores of sensorimotor function. Low falls-risk older adults had slower reaction times during anteroposterior sway initiation and decreased COP–COM separation during anteroposterior and medialateral sway initiation and anteroposterior continuous voluntary sway compared with young adults. High falls-risk older adults had slower initiation and termination reaction times in all response directions and decreased COP–COM separation during sway initiation and continuous voluntary sway in the anteroposterior and medialateral directions compared with young adults. Compared with low falls-risk older adults, high falls-risk older adults had slower initiation and termination reaction times in all response directions and decreased COP–COM separation during medialateral continuous voluntary sway. Reaction time and COP–COM measures significantly predicted group status in discriminant models with sensitivities and specificities of 72–100%. Overall, these findings highlight important associations of age-related declines in sensorimotor function related to an increased risk of falling with slower postural reaction time and reduced postural stability.
年龄、功能性姿势反射和随意摇摆。
DOI：
10.1093/geronj/44.4.b100
发表时间：
1989
期刊：
Journal of gerontology
影响因子：
--
作者：
Stelmach,GE;Phillips,J;DiFabio,RP;Teasdale,N
通讯作者：
Teasdale,N
影响因子：
2.4
作者：
Chou, LS;Kaufman, KR;Brey, RH
通讯作者：
Brey, RH
与姿势稳定性相关的感觉运动缺陷。
影响因子：
3.3
作者：
Stelmach,GE;Worringham,CJ
通讯作者：
Worringham,CJ