男子水球守门员膝、踝关节屈伸肌群等速肌力实验测量

Assessing the Muscle Strength Balance Between Flexors and Extensors at Knee and Ankle in Elite Male Water Polo Goalkeepers

通过对国家男子水球守门员进行膝和踝关节屈伸等速测试,探讨我国优秀水球守门员膝踝关节屈伸肌群等速肌力水平,诊断膝和踝关节屈伸肌群肌力均衡性,预防因屈伸肌群肌力比值失衡而导致关节肌群运动损伤的发生。研究结果表明,膝和踝关节屈伸肌群测试模式均为等速向心和离心。在测试速度为60°/s和240°/s下,膝关节屈伸肌群向心收缩峰力矩比值的平均值分别为0.5,0.6;在测试速度为60°/s和180°/s时,踝关节屈伸肌群向心收缩峰力矩比值的平均值均为0.3;仅有1名队员两侧踝关节屈肌群离心收缩峰力矩(60°/s)/伸肌群向心收缩峰力矩(240°/s)小于1,其余队员膝踝关节屈伸等速测试时,拮抗肌群离心收缩峰力矩/原动肌群向心收缩峰力矩均大于1.进一步得出国家男子水球守门员膝和踝关节屈肌群向心收缩肌力较弱;膝和踝关节屈伸等速测试时拮抗肌群离心收缩肌力与原动肌群向心收缩肌力均衡。

The aim of this study was to assess the muscle strength symmetry between flexors and extensors at knee and ankle in elite male water polo goalkeepers.The conventional ratio of knee concentric flexors to concentric extensors was 0.5,0.6 respectively,and that of ankle concentric flexors to concentric extensors was 0.3.The functional mixed ratio of flexors and extensors at knee and ankle was all greater than 1.The all functional mixed ratio of ankle and knee flexors and extensors was greater than 1.The concentric contraction muscle strength of knee flexors and ankle extensors was weaker.The muscle strength between eccentric contraction of antagonist and concentric contraction of agonist was symmetric with ankle flexion and extension.The concentric contraction muscle strength of knee flexors and ankle extensors was weaker.The maximum eccentric contraction muscle strength of flexors at knee was weaker.The muscle strength between eccentric contraction of antagonist and concentric contraction of agonist was symmetric with ankle flexion and extension.