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 运动一个计算机化的摄像系统测量运动模式 和特殊的平台建在地板上测量力作用在 英尺根据测量的运动和力， 可以估计行走期间的身体。目前使用的技术 近似工作过度简化了身体及其运动的模型， 在估计中引入误差。我们研究的目的是 研究更复杂的人体模型， 影响机械工作估计。这项研究对10名正常受试者进行了研究， 检查步态期间踝关节所做的工作已经出版。 这项研究采用了一个更复杂的踝关节模型， 在机械功中加入了以前被忽略的附加项 计算。 来自另一项研究的数据，该研究检查了在 膝关节已完成并提交。第三项研究涉及 另外15名受试者制作了一个明显改进的足部模型。一 目前正在进行的最后一项研究正在调查 在行走的力学上有着显著的不同的行走速度。是 假设存在两种行走模式，而不是连续的 单人行走策略这些研究的结果表明， 完整和数字一致的人体力学表征 移动是可行的。这些分析技术的应用 人体运动的评估将对康复和 患者群体的外科治疗。

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. The study of 10 normal subjects that examined the work done at the ankle joint during gait has been published. 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 and presented. A third study involving 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 a 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.