摘要
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。
The study focuses on the lower limb and a model of three-segment kinetics chain consisting of foot,lower leg and thigh is established for kinetic calculation.The conclusions can be drawn that Newton-Euler can describle lower limb model movement and calculate muscular moment normatively and efficiency.Lower limb movement in soccer kicking is studied based on this model and find out the change character of muscle moment during lower limb swing.Different moment type plays different role in different joints.Generally speaking,during limb swing phase,the swing velocity is determined by flexion and extension moment,the movement track and the part plays a role on direction is determined by adduction and abduction moment,and the form of reasonable foot shape is determined by internal and external rotation moment.
出处
《北京体育大学学报》
CSSCI
北大核心
2010年第6期62-65,70,共5页
Journal of Beijing Sport University
基金
山东省研究生教育创新计划项目(编号:SDYY08078)
鲁东大学科研基金项目重点课题(编号:L20073001)
关键词
下肢环节链
动力学模型
踢球技术
segment chain of lower limb
kinetics model
soccer kicking
