Department of Physical Education, Centro Universitário Tabosa de Almeida - Asces-Unita, Caruaru, Brazil.
Associated Graduate Program in Physical Education UPE/UFPB, João Pessoa, Brazil.
J Back Musculoskelet Rehabil. 2022;35(6):1289-1297. doi: 10.3233/BMR-210243.
Scapular dyskinesis has been associated with shoulder dysfunctions, and changes in electromyographic (EMG) activity have been reported during the execution of some exercises.
To compare upper limb muscles EMG of asymptomatic subjects with and without scapular dyskinesis during bench-press and dumbbell fly exercise performed on different surface stability conditions.
Twenty-eight physically active men were allocated into two groups: Control group (n= 14) and Dyskinesis group (n= 14). The participants performed six repetitions lasting three seconds of the bench press and dumbbell fly exercises with 50% of one-repetition maximum (1RM) on a bench and a Swiss ball. The EMG activity of the pectoralis major, serratus anterior, upper and lower trapezius, anterior deltoid, biceps and triceps muscles were recorded.
No differences were found between groups, regardless of exercise or surface type. Inserting the unstable surface in the supine exercise promoted a slight increase in upper trapezius EMG activity for the control [4.32 (95% CI: 1.04 to 7.60)] and dyskinesis [3.30 (95% CI: 0.34 to 6.27)] groups.
There is no difference in upper limb muscle EMG activity between subjects with and without scapular dyskinesis. In addition, inserting unstable surfaces did not modify EMG activity.
肩胛运动障碍与肩部功能障碍有关，并且在执行某些运动时已经报道了肌电图（EMG）活动的变化。
比较肩胛运动障碍和无肩胛运动障碍的无症状受试者在上臂进行仰卧式卧推和哑铃飞鸟运动时，在不同表面稳定性条件下的肌肉 EMG。
将 28 名活跃的男性分为两组：对照组（n=14）和运动障碍组（n=14）。参与者在仰卧位和瑞士球上以 50%的一次重复最大量（1RM）完成了六次持续三秒钟的卧推和哑铃飞鸟运动。记录胸大肌、前锯肌、上和下斜方肌、前三角肌、肱二头肌和肱三头肌的 EMG 活动。
无论运动或表面类型如何，两组之间均无差异。在仰卧运动中插入不稳定表面，使对照组[4.32（95%CI：1.04 至 7.60）]和运动障碍组[3.30（95%CI：0.34 至 6.27）]的上斜方肌 EMG 活动略有增加。
肩胛运动障碍和无肩胛运动障碍的受试者的上肢肌肉 EMG 活动没有差异。此外，插入不稳定表面不会改变 EMG 活动。
