作　　者： ; ; ; ;

机构地区： 上海体育学院

出　　处： 《体育科学》 2002年第1期127-130,共4页

摘　　要： 研究采用计算机仿真的方法对肢体两环节开放链快速运动进行了分析。结果表明,对于两环节在同一屈伸平面内的开放链运动,相邻环节相继发力的必要性取决于环节初始方位角;远侧关节肌肉的发力时机对远侧环节末端速度的输出存在较大影响,不同的发力时机将导致不同的动量矩传递效果;在两环节初始夹角大于180°时,关节反力在动量矩传递过程中所起的作用要大于关节肌力矩的作用。 The purpose of this study was to investigate the kinematical and dynamic characteristics of human open-linked segments during rapid swing.A two-segment rigid model was driven by correlative joint muscular moments that determined hypothetically according to Hill equation.The simulation demonstrated that the starting time of distal joint muscle effort took an important effect on distal velocity of open-linked system;different starting time resulted in different effect of angular momentum transfer.Sequential effort of adjacent joints muscle did not always play a positive role in increasing distal velocity of open-linked system,but depended on initial segments position.According to us,in most open-linked rapid swing motion,distal joint reaction force transfers more angular momentum than that distal joint muscle does.

关 键 词： 运动生物力学 计算机仿真 快速运动

领　　域： [文化科学] [文化科学]