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The effect of spin level and ball exit speed on forearm muscle activity in the tennis forehand stroke
International Journal of Sports Science & Coaching ( IF 2.029 ) Pub Date : 2021-04-15 , DOI: 10.1177/17479541211007611
Chantelle Rigozzi 1 , Jeremy Cox 2 , Gareth A Vio 2 , William L Martens 1 , Philip Poronnik 1
Affiliation  

Elbow tendinopathy injuries are very common in tennis players. One of the commonly accepted theories describing the development of elbow tendinopathy in tennis is based on stiffness of the forearm skeletal muscle units and their repetitive overuse in the forehand stroke. Our objective was to use a novel microcontroller based wearable device to compare the influence of different forehand spin levels (flat, topspin and lob) and ball exit speed on forearm muscle activity in the potential onset of elbow tendinopathy in experienced adult tennis players. Peak normalised extensor carpi radialis (ECR) and flexor carpi radialis (FCR) muscle activity corresponding to each forehand shot and ball exit speed were determined and analysed. For the ECR shots (flat = 121, topspin = 272 and lob = 273) by 8 players, Kruskal-Wallis test (p < 0.001) and Post-Hoc tests revealed a significant difference between the flat and topspin spin levels (p < 0.01) and flat and lob spin levels (p < 0.001). For the FCR shots (flat = 125, topspin = 301 and lob = 303) by 9 players, Kruskal-Wallis test showed no significant difference between the three spin levels. For the corresponding ball speed, the Kruskal-Wallis (p < 0.001) and subsequent Post-Hoc (p < 0.001) showed that flat hits had the significantly highest ball speed followed by topspin then lob accordingly for both muscles included shots. Our results suggest that coaches could consider recommending players to hit forehands with topspin in order to potentially reduce the risk of developing lateral elbow tendinopathy.



中文翻译:

旋转水平和出球速度对网球正手击球中前臂肌肉活动的影响

肘肌腱损伤在网球运动员中很常见。描述网球中肘部肌腱病发展的一种普遍接受的理论是基于前臂骨骼肌单位的刚度及其在正手动作中的反复过度使用。我们的目标是使用一种新颖的基于微控制器的可穿戴设备,比较有经验的成年网球运动员在潜在的肘肌腱病发作中,不同的正手旋转水平(平直,上旋和前倾)和出球速度对前臂肌肉活动的影响。确定并分析与每个正手射击和出球速度相对应的峰值归一化伸肌腕car肌(ECR)和屈肌腕car肌(FCR)肌肉活动。对于8位选手的ECR投篮(平射= 121,前旋= 272,高球= 273),Kruskal-Wallis测试(p <0。001)和Hoc后测试表明,自旋和上旋自旋水平(p <0.01)与自旋和肺叶自旋水平(p <0.001)之间存在显着差异。对于9名球员的FCR投篮(持平= 125,上旋= 301和高球= 303),Kruskal-Wallis测试显示三个旋转级别之间没有显着差异。对于相应的球速,Kruskal-Wallis(p <0.001)和随后的Hoc后(p <0.001)表明,平直击球的球速最高,然后是上旋,然后是大球,因此,包括击球在内的两个肌肉都显着。我们的结果表明,教练可以考虑推荐运动员用上旋打正手,以潜在地减少发生外侧肘肌腱病的风险。01)以及平坦和高音自旋水平(p <0.001)。对于9名球员的FCR投篮(持平= 125,上旋= 301和高球= 303),Kruskal-Wallis测试显示三个旋转级别之间没有显着差异。对于相应的球速,Kruskal-Wallis(p <0.001)和随后的Hoc后(p <0.001)表明,平直击球的球速最高,然后是上旋,然后是球击,这两个肌肉都包括击球。我们的结果表明,教练可以考虑推荐运动员用上旋打正手,以潜在地减少发生外侧肘肌腱病的风险。01)以及平坦和高音自旋水平(p <0.001)。对于9名球员的FCR投篮(持平= 125,前旋= 301和高球= 303),Kruskal-Wallis测试显示三个旋转级别之间没有显着差异。对于相应的球速,Kruskal-Wallis(p <0.001)和随后的Hoc后(p <0.001)表明,平直击球的球速最高,然后是上旋,然后是球击,这两个肌肉都包括击球。我们的结果表明,教练可以考虑推荐运动员用上旋打正手,以潜在地减少发生外侧肘肌腱病的风险。Kruskal-Wallis(p <0.001)和随后的Hoc后(p <0.001)表明,平直击球的球速最高,随后是上旋,然后是大球,因此,包括击球在内的两个肌肉都具有最高的击球速度。我们的结果表明,教练可以考虑推荐运动员用上旋打正手,以潜在地减少发生外侧肘肌腱病的风险。Kruskal-Wallis(p <0.001)和随后的Hoc后(p <0.001)表明,平直击球的球速最高,随后是上旋,然后是大球,因此,包括击球在内的两个肌肉都具有最高的击球速度。我们的结果表明,教练可以考虑推荐运动员用上旋打正手,以潜在地减少发生外侧肘肌腱病的风险。

更新日期:2021-04-15
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