通过地面反作用力得出的人体质心振荡对人类步态进行特征描述。

Characterization of human gait by means of body center of mass oscillations derived from ground reaction forces.

作者信息

Crowe A, Schiereck P, de Boer R W, Keessen W

机构信息

Department of Medical and Physiological Physics, University of Utrecht, The Netherlands.

出版信息

IEEE Trans Biomed Eng. 1995 Mar;42(3):293-303. doi: 10.1109/10.364516.

DOI:10.1109/10.364516

PMID:7698785

Abstract

Ground reaction forces from two force plates are used to determine the cyclic oscillations of the body center of mass while walking at preferred speed. Good approximations to the oscillations may be obtained from formulae containing just the first- and second-order Fourier coefficients of the combined left-right ground reaction forces taken over a complete walking cycle. The symmetric components of the oscillations have consistent mutual phase relations for normal subjects, so that the amplitudes alone can be used as sufficient parameters to characterize the body center of mass oscillations. The analytical technique enables detection of small but consistent gait asymmetries.

摘要

来自两个测力板的地面反作用力用于确定以偏好速度行走时身体质心的周期性振荡。通过仅包含在一个完整步行周期内左右地面反作用力组合的一阶和二阶傅里叶系数的公式，可以很好地近似这些振荡。对于正常受试者，振荡的对称分量具有一致的相互相位关系，因此仅振幅就可以用作表征身体质心振荡的充分参数。该分析技术能够检测到微小但一致的步态不对称。