摘要
采用自主研发的摔跤滚桥测力系统结合定点摄像技术和表面肌电采集技术,对10名男子古典式摔跤一级运动员滚桥技术的动力学、运动学、表面肌电特征进行分析。结果显示:①滚桥技术的力量峰值出现在69°,运动员的滚桥技术峰值扭矩可达自身体质量的(2.11±0.64)倍。②右腹外斜肌和右臀大肌的肌肉激活持续时间最长,分别达5.83 s和5.94 s。③右股直肌、右腹外斜肌、右臀大肌分别在0~90°、0~120°、0~180°范围内做功水平显著高于对侧,左背阔肌在0~30°和120~180°范围内做功水平高于对侧。提示:①在滚桥技术初期,假人滚动的力量主要由双腿蹬伸迅速过渡到右腿侧向蹬伸用力、躯干右旋体位下左旋用力、左臂随躯干左旋方向提拉假人用力构成。②30°后,假人滚动的力量主要由右腿髋、膝关节伸展肌群和躯干左旋肌群收缩用力构成,在约69°时呈现滚桥技术峰值力量体位,此后滚桥力量持续减小。③120°后,假人滚动的力量主要由左肩伸展的拉动假人动作和右髋伸展的挺髋动作用力构成。
Ten national first-class wrestlers were selected as research subjects to explore the dynamics,kinematics and sEMG characteristics of wrestling side-rolling technique by Wrestling Side-Rolling Technique Testing System synchronized with electromyogram(EMG)acquisition system and video.Results①The maximum strength of wrestlers’side-rolling techniques appeared at 69°while the first-class male wrestlers can be(2.11±0.64)times of their body mass.②The activation duration of right gluteus maximus and right abdominal oblique are over 5.83 s and 5.94 s respectively,the longest two of the 12 muscles.③The work of right rectus femoris,right external oblique abdomen and right gluteus maximus was significantly higher than the opposites in the range of 0-90°,0-120°and 0-180°;the work of left latissimus dorsi was higher than the opposite in the range of 0-30°and 120-180°.Conclusions①At the beginning of side-rolling technique,the force of rolling mainly consists of three parts:leg pushing,left-rotate under the body right rotation position,and left-arm-pulling force.②After 30°,the rolling force is mainly composed of the contraction force of the right hip,knee extensor and trunk left rotator.At about 69°,the peak force position of the rolling bridge technology appears.③After 120°,the rolling force mainly consists of the pulling action of the left shoulder extension and the pulling action of the right hip extension.
作者
曹智超
吴瑛
章凌凌
CAO Zhichao;WU Ying;ZHANG Lingling(School of Physical Education and Training,Shanghai University of Sport,Shanghai 200438,China;Department of Physical Education,Shanghai University of Finance and Economics,Shanghai 200438,China)
出处
《上海体育学院学报》
CSSCI
北大核心
2021年第4期77-84,96,共9页
Journal of Shanghai University of Sport
基金
国家体育总局体育科技创新与成果转化项目(2015B09)
上海市人类运动能力开发与保障重点实验室(上海体育学院)资助项目(11DZ2261100)。
关键词
摔跤
滚桥技术
动力学
运动学
表面肌电
专项力量
wrestling
side-rolling technique
dynamics
kinematics
sEMG
specific strength
