Department of Physiotherapy and Rehabilitation, Tarsus University Faculty of Health Sciences, Mersin, Turkey.
Department of Physical Medicine and Rehabilitation, Cukurova University Faculty of Medicine, Adana, Turkey.
J Shoulder Elbow Surg. 2024 Jan;33(1):192-201. doi: 10.1016/j.jse.2023.07.016. Epub 2023 Aug 12.
In tennis athletes with scapular dyskinesis, the activation of the scapulothoracic muscles during serve is not known. Also, the mechanical properties (tone, elasticity, and stiffness) of the scapulothoracic muscles of the tennis athletes with scapular dyskinesis are likely to change. The study aimed to evaluate the activation of the scapulothoracic muscles while performing tennis serve and to determine the changes in the mechanical properties of the same muscles in young tennis athletes with scapular dyskinesis.
Seventeen tennis athletes with scapular dyskinesis aged between 11 and 18 years (the scapular dyskinesis group) and age- and gender-matched 17 asymptomatic tennis athletes (the control group) were included in the study. Activation of scapulothoracic muscles (descending-transverse-ascending trapezius and serratus anterior) in the 3 phases (preparation, acceleration, and follow-through) of the serve was evaluated using surface electromyography, and the mechanical properties of the same muscles were measured at rest by myotonometry.
Ascending trapezius activation in the follow-through phase was lower in the scapular dyskinesis group compared with the control group (mean difference 95% confidence interval: -22.8 [-41.2 to -4.5]) (P = .017). The tone and stiffness of the transverse trapezius (P = .043 and P = .017, respectively) were higher, whereas the same parameters of the ascending trapezius were lower (P = .008 and P = .010, respectively) in the scapular dyskinesis group compared with the control group.
Activation of the ascending trapezius and the tone and stiffness of the transverse-ascending trapezius were altered in tennis athletes with scapular dyskinesis. Implementations to improve these changes can be included in the rehabilitation or training programs of young tennis athletes with scapular dyskinesis.
在患有肩胛运动障碍的网球运动员中，发球时肩胛胸壁肌肉的激活情况尚不清楚。此外，肩胛运动障碍的网球运动员的肩胛胸壁肌肉的力学特性（张力、弹性和硬度）可能会发生变化。本研究旨在评估在进行网球发球时肩胛胸壁肌肉的激活情况，并确定患有肩胛运动障碍的年轻网球运动员的肩胛胸壁肌肉的力学特性的变化。
本研究纳入了 17 名年龄在 11 至 18 岁之间（肩胛运动障碍组）的肩胛运动障碍的网球运动员和 17 名年龄和性别相匹配的无症状网球运动员（对照组）。使用表面肌电图评估在发球的 3 个阶段（准备、加速和随挥）中肩胛胸壁肌肉（斜方肌降部-横部-升部和前锯肌）的激活情况，并通过肌电描记术在休息时测量相同肌肉的力学特性。
与对照组相比，肩胛运动障碍组在随挥阶段斜方肌升部的激活较低（平均差异 95%置信区间：-22.8[-41.2 至-4.5]）（P=.017）。横部斜方肌的张力和硬度较高（P=.043 和 P=.017），而肩胛运动障碍组的升部斜方肌的张力和硬度较低（P=.008 和 P=.010）。
肩胛运动障碍的网球运动员的斜方肌升部的激活以及横部-升部斜方肌的张力和硬度发生改变。可以在肩胛运动障碍的年轻网球运动员的康复或训练计划中加入改善这些变化的措施。
