基于表面肌电技术评价中医推拿对运动员肌肉疲劳恢复效果

Analysis on Assessment by sEMG on the Effects of Rehabilitation of Muscles of Upper Extremities Fatigue for Boxers after Massage

目的:观察利用表面肌电技术来评价中医推拿对拳击运动员专项训练后上肢肌肉疲劳后的恢复效果,以便进一步阐明中医手法推拿在运动后疲劳恢复中的作用提供参考依据。方法:以沈阳体育学院竞技体校的16名拳击运动员为研究对象(8名男子拳手和8名女子拳手)。为了诱发肌肉疲劳,令受试者左右上肢交替进行60次连续的直拳击打沙袋动作。诱发疲劳前分别测试左右上肢三角肌前束最大等长收缩60s的肌电活动。诱发疲劳后,右侧上肢肌肉进行中医手法推拿恢复20min,左右上肢肌肉采用自然恢复20min,然后左右上肢再分别进行60s的最大等长收缩,同时记录三角肌前束的电活动。结果:左侧、右侧三角肌前束在疲劳前和疲劳后即刻的MPF都有统计学上的差异(p<0.05),疲劳后比疲劳前MPF显著下降;疲劳前左右侧的三角前束的的MPF没有统计学差异(p>0.05);疲劳后,上肢经过推拿后三角肌前束MPF的值要高于自然恢复情况(p<0.05)。结论:拳击运动员专项训练后上肢肌肉出现疲劳后,MPF值下降;MPF可能成为中医手法推拿对肌肉疲劳后恢复效果的评价指标。

Objective：To observe the effects of rehabilitation of muscle uuper extremities fatigue for boxers after massage by surface electromyography（sEMG） , and provide the references for study on the impact of massage in induced-exercise fatigue. Methods：16 boxers（8 male boxers and 8 female boxers）from affiliated school in Shenyang Sport University were engaged in the experiment. To induce fatigue, subjects performanced 60 straight punches on the bag for right and left upper extremities, respectively. Prior to the fatigue triceps anterior portions, right and left upper extremities were conducted maximual isometric contraction for 60s which was recorded by ME6000. After fatigue, muscles of right upper extremity were massaged for 20min, and muscles of left upper extremity were recovered at ease, then the triceps anterior portions acvtivities were recorded by ME6000. Results：There were significant differences（P 〈 0.05 ）betwee after and before fatigue for right and left upper extremities muscles respectively. There was no difference between right and left triceps anterior portions before fatigue（P 〉 0.05 ）. The MPF of right triceps anteri- or portions massaged was higher than that of right triceps anterior portions at ease （ P 〈0. 05 ）. Conclusion ： MPF decreased after upper extremities muscles fatigue due to technical training for boxers. MPF may be the evaluation index that is used for assessing the effects of rehabilitation of muscle uuper extremities fatigue for boxers after massage