不同速度等动力矩曲线的形态特征及其和专项力量的关系

The Shape of Isokinetic Torque Curve In Different Joints Angular Speed and Its R elationship with Strength of Special Sports

自从 3 0多年前等动力量测试设备问世以后 ,等动力量测试和评价已经逐渐被广泛应用于康复临床和运动员运动能力的分析和评价中。绝大多数研究主要集中在峰力矩、功、功率及其相对比值的研究上 ,曲线形态指标只有最佳力矩角 ,加速能等局部指标。研究中发现 ,不同速度下力矩 -角度曲线存在巨大差异。本文研究探讨了 40 0米运动员膝、髋关节伸屈力矩曲线在不同速度下的差异特征。并分析了产生这种差异的可能原因。发现高速 (3 0 0°/S)测试中力矩曲线多峰现象 ,并有良好的可重复性 ;最佳力矩角度不仅和运动速度有关 ,还是一个和动作幅度有关的动态的指标。研究认为在多极值曲线中只用最佳力矩角难以反映运动员在高速情况下力量特征的差异。高速下力量曲线的整体形态才能更有效地反映运动员的专项运动能力。

The isokinetic joints tests have been widely used in evaluat ion of the rapy and abilities of athletes. Some of special parameters like Peak Torque, Pow er, Total Work, etc, were studied. In tests, it had been found that these variab les could not fully assess the status of human joints. The shape of isokinetic t orque curve would be very different between lower angular speed (60°/S) and hig her speed (300°/S). The causes of the difference were investigated and analyzed in this study. It was concluded that the shape of torque curve in higher angula r speed could reflect the abilities of the joints of an athlete in specific spor ts.