摘要
目的:采用文献资料、专家访谈、问卷调查等研究方法,结合三维摄像测量技术,从运动生物力学视角对旋风脚720°接马步动作落地时致膝关节损伤的影响因素进行研究。方法:选取四川省武术队5名优秀运动员,针对旋风脚720°接马步动作进行三维摄像测量,获得各阶段运动参数,量化分析各阶段数据特征。结论:旋风脚720°接马步动作落地阶段致膝关节损伤具有普遍性,该动作导致膝关节损伤的主要形式有半月板、侧副韧带、交叉韧带损伤等;落地瞬间产生的冲撞力是旋风脚720°接马步动作落地时致膝关节损伤的主要因素,决定落地瞬间冲撞力的影响因素主要是运动员的体重、腾空高度及落地方式;体重是相对不变的量,而腾空高度决定该动作的完成质量,腾空越高,动作质量越高,同时为落地阶段赢得缓冲时间;在体重和腾空高度一定时,人体可以在落地阶段通过调整肢体动作来改变转动惯量和左右膝角的大小,延缓落地过程的时间,达到减少冲撞力峰值目的,以获得合理的缓冲保护膝关节。
Purpose： The purpose of this study was to explore the influencing factors of knee joint injury induced by whirlwind kick swivel 720° followed by horse stance landing from a biomechanical perspective,by the methods of literature review,expert interview,questionnaire investigation,as well as 3- D technology. Methods： Five elite athletes from Sichuan Wushu team were selected as subjects,their movement of whirlwind kick swivel 720° followed by horse stance landing was measured by 3- D imaging,data of the phases of this movement was collected and phase characteristic of the movement was analyzed. Conclusions： The knee joint injury induced by the movement of whirlwind kick swivel 720° followed by horse stance landing is common,the main injuries are meniscus injury,the lateral collateral ligament injury and cruciate ligament injury. The impulse force generated by landing is a key factor of knee joint injury,and the influencing factors of this impulse force are athlete＇s boy weight,flight height and landing type. Weight is relatively stable, and flight height determines the quality of the movement. Higher flight gains higher quality of the movement,and more time of the landing. If the body weight and flight height are stable,athlete can adjust the body movement to change the moment of inertia and both knees angle in landing phase for prolonging the landing time and lowering the peak value of landing impulse force,which could be reasonable for protecting the knee joint.
出处
《北京体育大学学报》
CSSCI
北大核心
2015年第3期139-144,共6页
Journal of Beijing Sport University
关键词
旋风脚720°接马步
膝关节损伤
冲撞力
转动惯量
膝关节角度
whirlwind kick swivel 720 ° followed by horse stance knee joint injury impulse force moment of inertia knee angle
