Department of Rehabilitation Sciences and Physiotherapy, Faculty of Medicine and Health Sciences, Ghent University, Gent, Belgium.
J Strength Cond Res. 2022 Jul 1;36(7):1793-1800. doi: 10.1519/JSC.0000000000003747. Epub 2020 Oct 15.
Werin, MB, Maenhout, AG, Icket, J, Jacxsens, N, Kempkes, E, and Cools, AM. Does the activity in scapular muscles during plyometric exercises change when the kinetic chain is challenged?-An EMG study. J Strength Cond Res 36(7): 1793-1800, 2022-Plyometric exercises for the shoulder are used in rehabilitation and in workout regime when the sport demands high speed power training. The aim of this clinical laboratory electromyography (EMG) study was to determine whether scapular muscle performance differs during plyometric shoulder exercises when changing the demand on the kinetic chain. Thirty healthy overhead athletes, with a mean age of 22.7 years (±2.2), performed 6 exercises, with both a low and a high demand on the kinetic chain, in prone, side and standing in positions. The EMG activity of the upper trapezius (UT), middle trapezius (MT), lower trapezius (LT), and serratus anterior (SA) on the tested side and bilateral of gluteus maximus (GM) and abdominal oblique externus (OE) was registered with wireless surface EMG. Intermuscular muscle ratios UT/SA, UT/MT, and UT/LT were also calculated. The level of significance set for the study was alpha = 0.05. The muscle ratio UT/SA was significantly lower (p < 0.05) when high demand on the kinetic chain compared with low. SA muscle activity showed significantly (<0.001) higher values in the prone position with high demand on the kinetic chain compared with low. All 3 trapezius muscle parts had significantly higher values (p < 0.001) in the prone compared with side and standing positions. The GM and OE showed significantly higher (p ≤ 0.01) activity in positions more demanding for the kinetic chain. When composing a strengthening or a rehabilitation program for athletes, the knowledge of how scapular and trunk muscles interact can be used to amplify the strengthening effect.
韦林，MB，马恩霍特，AG，伊克特，J，雅克森斯，N，肯普克斯，E，和库尔，AM。当运动链受到挑战时，弹震式训练中肩胛骨肌肉的活动是否会改变？-肌电图研究。J 力量与调理研究 36(7)：1793-1800，2022-用于肩部的弹震式训练在康复和锻炼方案中用于运动需求高速力量训练。本临床实验室肌电图（EMG）研究的目的是确定在改变运动链需求时，弹震式肩部训练中肩胛骨肌肉表现是否不同。30 名健康的上肢运动员，平均年龄 22.7 岁（±2.2），在俯姿、侧姿和站姿中进行了 6 项运动，分别对运动链的低需求和高需求。测试侧和双侧的上斜方肌（UT）、中斜方肌（MT）、下斜方肌（LT）和前锯肌（SA）以及臀大肌（GM）和腹外斜肌（OE）的肌电图活动通过无线表面肌电图记录。还计算了 UT/SA、UT/MT 和 UT/LT 等肌肉比值。本研究的显著性水平设定为α=0.05。与低需求相比，高需求对运动链的 UT/SA 肌肉比值显著降低（p<0.05）。SA 肌肉在高需求的俯姿下活动明显高于低需求（<0.001）。3 个斜方肌部分在俯姿下的活动明显高于侧姿和站姿（p<0.001）。GM 和 OE 在对运动链要求更高的位置显示出明显更高的活动（p≤0.01）。在为运动员制定强化或康复计划时，了解肩胛骨和躯干肌肉如何相互作用可以用来增强强化效果。
