散打运动员肘关节的等速肌力研究

Research on the Isokinetic Muscle Strength of the Elbow Joint of Sanda Athletes

采用ISOMED2000等速力量测试系统对优秀散打运动员和一般散打运动员肘关节进行不同速度的等速肌力测试。测试速度依次为10°/s、60°/s、180°/s和360°/s,选取屈肌肌群、伸肌肌群的峰值力矩、峰值力矩体重比、屈伸肌比值、峰力矩角度、平均功率、总功作为指标,对运动员的肘关节肌肉力量进行研究,比较分析不同速度下肘关节屈伸肌群的力学特征变化。结果显示,优秀运动员无论绝对力量、相对力量还是爆发力都高于一般运动员,优秀运动员在60°/s速度时峰力矩、相对峰力矩和做功最大,但优秀运动员的伸肌力量明显大于屈肌力量,可能出现关节不稳定。

This study applies ISOMED2000 isokinetic strength testing system to test elbow muscle strength of elite Sanda athletes and the average ones in different speeds.Speed tested are 10°/s,60°/s,180°/s and 360°/s.Peak torque,ratio of peak torque and weight,flexor and extensor muscles ratio,peak torque angle,average power and total power of flexor and extensor muscle groups are selected as index to study their elbow muscle strength and comparatively analyze the mechanical characteristics changes in elbow flexor and extensor muscle groups at different speeds.The results show that elite athletes absolute strength,relative strength and explosive strength are all higher than average athletes,peak torque,relative peak torque,and acting power are maximum at 60°/s velocity,but extensor muscle strength of elite athletes is significantly higher than flexor muscle strength,thus joint instability may occur.