Université de Lyon, Université Lyon 1, CRIS EA 647, UFRSTAPS, 27-29, bd du 11 novembre 1918, 69622 Villeurbanne, France.
J Electromyogr Kinesiol. 2012 Apr;22(2):294-300. doi: 10.1016/j.jelekin.2011.12.004. Epub 2012 Jan 13.
This study aimed at investigating the relationship between trunk and upper limb muscle coordination and stroke velocity during tennis forehand drive. The electromyographic (EMG) activity of ten trunk and dominant upper limb muscles was recorded in 21 male tennis players while performing five series of ten crosscourt forehand drives. The forehand drive velocity ranged from 60% to 100% of individual maximal velocity. The onset, offset and activation level were calculated for each muscle and each player. The analysis of muscle activation order showed no modification in the recruitment pattern regardless of the velocity. However, the increased velocity resulted in earlier activation of the erector spinae, latissimus dorsi and triceps brachii muscles, as well as later deactivation of the erector spinae, biceps brachii and flexor carpi radialis muscles. Finally, a higher level of activation was observed with the velocity increase in the external oblique, latissimus dorsi, middle deltoid, biceps brachii and triceps brachii. These results might bring new knowledge for strength and tennis coaches to improve resistance training protocols in a performance and prophylactic perspective.
本研究旨在探讨网球正手击球时躯干和上肢肌肉协调性与速度之间的关系。21 名男性网球运动员进行了五次横拍正手击球，记录了 10 个躯干和优势上肢肌肉的肌电图（EMG）活动。正手击球速度范围为个人最大速度的 60%至 100%。计算了每个肌肉和每个运动员的起始、结束和激活水平。肌肉激活顺序的分析表明，无论速度如何，募集模式都没有改变。然而，速度的增加导致竖脊肌、背阔肌和肱三头肌更早地激活，而竖脊肌、肱二头肌和桡侧腕屈肌更早地失活。最后，随着速度的增加，腹外斜肌、背阔肌、中三角肌、肱二头肌和肱三头肌的激活水平更高。这些结果可能为力量和网球教练提供新的知识，以提高从性能和预防角度来看的阻力训练方案。
