ON THE MEASUREMENT OF DYNAMIC STABILITY OF HUMAN LOCOMOTION
ON THE MEASUREMENT OF DYNAMIC STABILITY OF HUMAN LOCOMOTION
复制标题
DOI：
10.1115/1.2895701
复制
发表时间：
1994-02-01
影响因子：
1.7
通讯作者：
BASDOGAN, C
中科院分区：
文献类型：
--
作者：
HURMUZLU, Y;BASDOGAN, C
本调查的主要重点是发展定量措施，以评估人类运动的动态稳定性。分析方法是基于Floquet理论，这是发展调查的非线性振荡器的稳定性。这里的基本方法进行修改，使其适应人类运动的复杂动力学和不同个体之间的差异的研究。一个定量的稳定性指数已被开发来表征人类的能力，以保持稳定的步态模式。Floquet乘数的20个正常受试者的庞加莱截面的步态周期的四个瞬间，即脚跟罢工，脚平，脚跟，脚趾关闭的运动学数据计算。然后，计算每个受试者的平均稳定性指数。进行了统计分析，以证明稳定性指数作为本研究期间受试受试者人群步态动态稳定性的定量指标的实用性。
The main focus of the present investigation is the development of quantitative measures to assess the dynamic stability of human locomotion. The analytical methodology is based on Floquet theory, which was developed to investigate the stability of nonlinear oscillators. Here the basic approach is modified such that it accommodates the study of the complex dynamics of human locomotion and differences among various individuals. A quantitative stability index has been developed to characterize the ability of humans to maintain steady gait patterns. Floquet multipliers of twenty normal subjects were computed from the kinematic data at Poincare sections taken at four instants of the gait cycle, namely heel strike, foot flat, heel off, and toe off. Then, an averaged stability index was computed for each subject. Statistical analysis was performed to demonstrate the utility of the stability indices as quantitative measures of dynamic stability of gait for the subject population tested during the present study.