落地缓冲过程中下肢的神经控制特性

NCC of Lower Limbs at Landing and Buffering

针对运动过程中,缓冲的效果取决于下肢的工作特性问题,分析了下肢在落地缓冲过程中的力学性能的神经控制特性、下肢结构的动力传递特性、肌肉工作特性、缓冲频率响应特性,分析了下肢力学结构描述参数（响应时间、相移、关节曲屈角度）神经刺激大小关系.通过对测试对象落地缓冲过程中下肢力学性能的神经控制特性进行实验,采用手工起点和计算机插值结合的方法对测试数据进行分析.实验结果表明,测试对象在落地缓冲过程中下肢随着刺激强度增加,缓冲冲量动量比函数趋于常数,后冲冲量动量比函数开始减小。缓冲的谐振峰一般出现于100 Hz以上.

Including dynamic transmission property of lower limb structure（LLS）,work property of muscle and frequency response of buffering,the neural control characteristics（NCC） of mechanical characteristics of LLS at landing and buffering are investigated in this paper.The relation of LLS parameters response,phase shift,joint flexion angle and nerve stimulus are discussed in detail.The mechanical investigation is normalized as a life system based on the introduction to NCC in biomechanics.The test data is analyzed with the combination of manual origin and computational interpolation.Resuits show：buffering momentum function tends to constant,recoil momentum decreases,the resonance hump is of above 100 Hz.