一、问题的提出在许多体育动作中,下肢既是支撑器官又是动力器官,动作的目的决定下肢的工作状态。从系统的观点来看,下肢是一个受控器官,根据运动目的接受中枢神经系统的控制,在中枢神经的指导下,改变自身的力学性能,因而探讨下肢力学性能的神经控制特性是非常重要的。实际中,下肢的工作方式不外乎主动停伸和被动压缩,其典 First, the issue raised In many sports action, both the lower extremity support organ is also the driving force, the purpose of the action to determine the working conditions of the lower limbs. From the systemic point of view, the lower extremity is a controlled organ that is under the control of the central nervous system for exercise purposes and changes its mechanical properties under the guidance of the central nervous system. Therefore, it is very important to explore the neural control characteristics of lower limb mechanical properties . In fact, the lower limbs work nothing more than active stop and passive compression, the code