鞭腿击打不同类型目标引发膝关节运动损伤的危险时刻分析

发布时间：2018-04-05 03:23

本文选题：鞭腿　切入点：类型　出处：《西安体育学院学报》2017年06期

【摘要】：探求鞭腿技术击打不同类型目标时因动作运用不当可能引发膝关节运动损伤的危险时刻。运用VICON System 3D运动采集系统,对10名优秀散打运动员鞭腿技术进行空击、击打脚靶、沙包时的运动轨迹进行采集,依据鞭打动作特点和下肢关节运动特征,将鞭腿动作划分为3个时刻、2个时段,对其在各时刻的动作速度、作用腿膝关节角度、角速度、力矩等运用VICON Nexus和Polygon分析软件进行处理。研究结果表明:作用腿膝关节屈伸、内收外展、回旋角度和角速度以及关节力矩等各方面均存在着显著性差异(P0.05);鞭腿空击技术类型的动作速度相对较慢,击打时段膝关节角速度相对较快、伸展时段膝关节呈外旋、加速并过度伸展状态;击打脚靶类型的动作速度相对较快,伸展时段膝关节呈外旋伸展运动状态;击打沙包类型膝关节的各项力矩相对较大,伸展时段膝关节呈反方向运动状态。鞭腿的3种击打类型均存在引发膝关节运动损伤的危险时刻,建议运动员在训练和实战时遵循鞭腿技术动作的运动规律。
[Abstract]:To explore the dangerous time of knee motion injury caused by improper use of action when whip leg technique strikes different types of targets.By using the VICON System 3D motion acquisition system, the motion track of 10 outstanding Sanda athletes was collected by using the technique of whipping, hitting foot targets and sandbags, according to the characteristics of whipping action and the movement of lower extremity joints.The motion of whip leg was divided into three times and two periods. The action speed, angle of knee joint, angle velocity and torque of the leg were processed by VICON Nexus and Polygon software.The results showed that there were significant differences in knee flexion and extension, abduction, rotation angle and angular velocity, and joint torque, and the action speed of the type of whiplash technique was relatively slow, the results showed that there were significant differences in knee joint flexion and extension, flexion and outreaching, rotation angle and angular velocity, and joint torque.The angular velocity of knee joint is relatively fast during hitting period, the knee joint appears external rotation during stretching period, accelerates and overstretch state, the action speed of hitting foot target type is relatively fast, and the knee joint is in the state of external rotation extension state during stretching period.The torque of the knee joint is relatively large, and the knee joint moves in the opposite direction during the stretching period.The three types of whiplash have dangerous time to cause knee joint motion injury. It is suggested that athletes follow the movement law of whiplash technique in training and actual combat.
【作者单位】：山西师范大学体育学院;龙仁大学武道学院;龙仁大学大学院;
【基金】：山西省体育局基金项目(15TY118) 山西省回国留学人员基金项目(2016076)
【分类号】：R873

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