Dynamic and electromyographical analysis in variants of push-up exercise

作者：Gouvali MK^*; Boudolos K

来源：Journal of Strength and Conditioning Research, 2005, 19(1): 146-151.

DOI：10.1519/14733.1

• pectoralis major
• triceps
• ground reaction force
• strength training
• exercise selection

The purpose of the study was to record dynamic and muscular modifications during push-up exercise variants (EV). Eight healthy men performed 6 EV of push-ups: normal, abducted, adducted, posterior, anterior, and on knees. Ground-reaction forces were recorded with a force plate while surface muscular activity with electrodes on triceps and pectoralis major. Significant differences (p < 0.05) existed for most vertical force variables but not for anteroposterior force and time variables. The initial load relative to body weight was 66.4% at the normal position, while only 52.9% at the on-knees EV. Muscle activity was less during the on-knees EV for both muscles. At the posterior EV, pectoralis major was activated higher than normal; however, triceps were activated lower than normal. Dynamic behavior and muscle activity were significantly altered between push-up EV. Instructions for push-up exercises should be followed carefully because dynamic and muscular challenge is altered when hands are differently positioned.

• 出版日期2005-2