青年男子举重运动员肘关节屈伸肌群等速肌力特征

通过分析青年男子举重运动员肘关节屈伸肌群的力量参数，探讨肘关节屈伸肌群在举重专项训练中的作用，为预防肘关节损伤及科学训练提供理论依据。采用Cybex—Norm型等速测力与康复系统，在预定角速度90°／s．180°／s和300°／s下对上海举重队9名青年男子举重运动员肘关节进行等速向心屈伸肌力测试。结果发现举重运动员肘关节屈伸肌群相对峰力矩、相对总劝和相对平均功率随着运动速度的增大而减小，屈伸肌群峰力矩比值接近1．0。表明举重项目中肘关节屈伸肌群主要功能是维持运动中关节的稳定性，而两侧肘关节同名肌群肌力素质的不均衡性可能是阻碍专项能力韦黾高的重要因素和诱发运动性伤病的潜在因素。

The Characteristics of Isokinetic Strength of Elbow Flexor/Extensor of the Junior Male Weightlifters

Through the analysis of the strength parameters of the elbow flexor/extensor of junior male weightlifters, the article tries to determine the function of elbow flexor/extensor in specific training of weightlifting so as to provide a theoretical basis for the prevention of elbow injuries and scientific training. Using the Cybex-Norm isokinetic dynamometer at the angular velocity of 90o/s, 180o/s and 300o/s, the author made an isokinetic concentric test of elbow flexor/extensor of 9 junior male weightlifters of Shanghai Weightlifting Team. The result shows that the elbow flexor/extensor relative peak torque, the relative total power and relative average power decrease with the increase of velocity. The flexor/extensor peak torque ratio closes to 1.0. These data indicate the main function of elbow flexor/extensor in weightlifting is to maintain the stability of elbow in movement. The asymmetry of the elbow muscle strength of the two sides might be the potential factor of hampering the improvement of the specific ability and causing injuries.