A RIGID BODY DATABASE ON NORMAL GAIT

步态分析的目的是量化一个人的行走模式， 身体用来产生所观察到的神经肌肉策略 运动 一个电脑化的摄像系统测量 模型和特殊平台内置于地板测量力作用 在脚上 从测量的运动和力，机械功 在行走过程中身体所做的动作是可以估计的。 目前使用的技术 近似做功过分简化了身体及其运动的模型 并在估计中引入误差。 我们研究的目的是 来研究更复杂的人体模型， 影响机械工作估计。 一项对10名正常受试者的研究， 检查在步态过程中踝关节所做的工作已经被接受 出版。 这项研究采用了一个更复杂的模型， 踝关节，并包括额外的条款，以前忽略了，在 机械功计算 来自另一项研究的数据，该研究检查了在 膝关节已经完成。 第三项研究涉及另外15名受试者 制作了一个显著改进的足部模型。 最后一项研究， 目前正在调查的影响， 行走速度对行走力学的影响 据推测，两个 行走模式的存在，而不是一个单一的步行连续 战略 这些研究的结果表明， 人体运动的数字一致的机械特性是 可行 这些分析技术在评价中的应用 人类运动的影响将对康复和外科手术产生影响。 患者群体的治疗。

The purpose of gait analysis is to quantify a person's walking pattern and the neuromuscular strategies used by the body to produce the observed movement. A computerized video camera system measures the movement pattern and special platforms built into the floor measure forces acting on the feet. From the measured movements and forces, the mechanical work done by the body during walking can be estimated. Current techniques used to approximate work oversimplify the model of the body and its movements and introduce errors into the estimates. The purpose of our research is to investigate more complex models of the body to learn how these models affect mechanical work estimates. One study of 10 normal subjects that examined the work done at the ankle joint during gait has been accepted for publication. The study employed a more sophisticated model of the ankle joint and included additional terms, previously ignored, in the mechanical work calculations. Data from another study which examined the mechanical work done at the knee joint has been completed. A third study involved another 15 subjects produced a dramatically improved model of the foot. A final study, currently underway, is investigating the effect of dramatically different walking speeds on the mechanics of walking. It is hypothesized that two modes of walking exist rather than a continuum of a single walking strategy. The results of these studies suggest that the complete and numerically consistent mechanical characterization of human movement is feasible. The application of these analytic techniques to the evaluation of human motion will have implications for rehabilitation and surgical treatment in patient populations.