Herrington Lee, Waterman Rosemary, Smith Laura
Directorate of Sport, Exercise and Physiotherapy, University of Salford, UK.
Directorate of Sport, Exercise and Physiotherapy, University of Salford, UK.
J Electromyogr Kinesiol. 2015 Feb;25(1):100-6. doi: 10.1016/j.jelekin.2014.10.002. Epub 2014 Oct 24.
Due to the versatility of the press-up it is a popular upper extremity strengthening and rehabilitation exercise. Press-up programmes are often progressed by increasing weight-bearing load and using unstable bases of support. Despite the popularity of the press-up research examining press-up variations is limited. The aim of the study was to examine the influence of common press-up exercises on serratus anterior, infraspinatus, anterior deltoid, pectoralis major and latissimus dorsi muscles overall EMG activity. Twenty-one healthy individuals participated in this study. Surface electrodes were placed on pectoralis major, anterior deltoid, infraspinatus, serratus anterior and latissimus dorsi muscles. Participants were tested under 7 static press-up conditions that theoretically progressively increase weight-bearing load and proprioceptive challenge while surface electromyographic activity was recorded. There was a high correlation between increased weight-bearing load and increased EMG activity for all muscles in stable base conditions. The introduction of the unstable base conditions resulted in an activation decline in all muscles. Within the two-armed press-up the Swiss ball resulted in decreased activation in all muscles except pectoralis major. Serratus anterior demonstrated the greatest activation as a percentage of maximum isometric contraction across all exercises. The findings of this study indicate that by varying the weight-bearing load and base of support whilst in the press-up position results in significantly different demands on shoulder and scapula muscles.
由于俯卧撑动作的多功能性，它是一种广受欢迎的上肢力量训练和康复运动。俯卧撑训练通常通过增加负重负荷和使用不稳定的支撑面来进阶。尽管俯卧撑很受欢迎，但针对俯卧撑不同变式的研究却很有限。本研究的目的是探讨常见俯卧撑练习对前锯肌、冈下肌、三角肌前束、胸大肌和背阔肌整体肌电图活动的影响。21名健康个体参与了本研究。表面电极放置在胸大肌、三角肌前束、冈下肌、前锯肌和背阔肌上。参与者在7种静态俯卧撑条件下接受测试，这些条件理论上会逐渐增加负重负荷和本体感受挑战，同时记录表面肌电图活动。在稳定支撑面条件下，所有肌肉的负重负荷增加与肌电图活动增加之间存在高度相关性。引入不稳定支撑面条件导致所有肌肉的激活下降。在双臂俯卧撑中，瑞士球导致除胸大肌外所有肌肉的激活减少。在前锯肌在所有练习中作为最大等长收缩百分比表现出最大的激活。本研究结果表明，在俯卧撑姿势中改变负重负荷和支撑面会对肩部和肩胛肌肉产生显著不同的需求。
