CAJ | 학술논문

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。
본연구대하지삼개배절급기련접방식진행료간화,건립료대표인체하지적3강체7자유도적다강체모형。실천증명료대인체하지소작적간화시가행적,모형가이대표인체하지적주요운동형식화공능。통과대족구척구기술하지삼관절적력구진행적계산여분석,초보료해료족구척구기술중파동퇴재파동과정중관절력구적변화특점。대우관、슬、과삼개인체하지주요관절,불동적력구형식재불동적관절중기착불동적작용,일반래강,재파동퇴적파동과정중,결정파동퇴파동속도적시관절적굴、신력구,결정배절파동적운동궤적차대지체운동기정향작용적시관절적전、수력구,결정촉구전족부배절합리형상적시관절적선내、선외력구。
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.