Dillingham T R, Lehmann J F, Price R
Physical Medicine and Rehabilitation Service, Walter Reed Army Medical Center, Washington, DC 20307-5001.
Arch Phys Med Rehabil. 1992 Jul;73(7):647-51.
The purpose of this study was to analyze and compare the effects of the leg during swing and stance phases of forward propulsion of the body for both men and women. Twelve able-bodied subjects, six men and six women, were studied with a Vicon(a) gait-analysis system. A two-dimensional, sagittal-plane biomechanical analysis featuring a link-segment model was used to determine the force at the hip in the horizontal direction. Integrating this force curve over time during the swing and stance gait phases produced linear impulses, representing swing and stance contributions to the propulsion of the body, and it allowed quantitative comparisons using student t and Fisher tests. The deceleration of the swing leg was found to be the major contributor to the forward propulsion of the body. The stance leg initially exerted the major restraining or negative impulse during early stance; then it generated a positive impulse during push-off in late stance. A typical pattern of gait impulses was defined for normal gait. Male and female gait impulses were not significantly different for all gait phases.
本研究的目的是分析和比较男性和女性在身体向前推进的摆动期和支撑期腿部的作用。使用Vicon（a）步态分析系统对12名身体健全的受试者进行了研究，其中包括6名男性和6名女性。采用具有链接段模型的二维矢状面生物力学分析来确定水平方向上髋关节处的力。在摆动期和支撑期步态阶段，对该力曲线随时间进行积分产生线性冲量，代表摆动和支撑对身体推进的贡献，并允许使用学生t检验和费舍尔检验进行定量比较。发现摆动腿的减速是身体向前推进的主要因素。支撑腿在支撑初期最初施加主要的约束或负向冲量；然后在支撑后期蹬离时产生正向冲量。为正常步态定义了典型的步态冲量模式。在所有步态阶段，男性和女性的步态冲量没有显著差异。
