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本研究对下肢三个环节及其链接方式进行了简化,建立了代表人体下肢的3刚体7自由度的多刚体模型。实践证明了对人体下肢所作的简化是可行的,模型可以代表人体下肢的主要运动形式和功能。通过对足球踢球技术下肢三关节的力矩进行的计算与分析,初步了解了足球踢球技术中摆动腿在摆动过程中关节力矩的变化特点。对于髋、膝、踝三个人体下肢主要关节,不同的力矩形式在不同的关节中起着不同的作用,一般来讲,在摆动腿的摆动过程中,决定摆动腿摆动速度的是关节的屈、伸力矩,决定环节摆动的运动轨迹且对肢体运动起定向作用的是关节的展、收力矩,决定触球前足部环节合理形状的是关节的旋内、旋外力矩。
In this study, the three links of the lower extremities and their linkages were simplified, and a multi-rigid body model of 7-DOF with 3 rigid bodies representing the lower extremities of the human body was established. Practice has proved that the reduction of human lower extremity is feasible, the model can represent the body’s main form and function of lower extremities. Through the calculation and analysis of the torque of the three joints of the lower limbs in soccer kicking technique, the characteristics of the joint moments during the swinging process of the soccer kicking technique are preliminarily understood. For the three joints of the lower extremities of the hips, knees and ankles, different moment forms play different roles in different joints. Generally speaking, during the swinging of the swinging legs, the swinging speed of the swinging legs is determined by the flexion of the joints , Tensile moment, determine the link swinging motion trajectory and orientation of the body movements is the joint show, close moment, determine the proper shape of the touch before the foot is the joint shape of the joint rotation, rotation torque.