Authors : Shin-Hye Baek, Eun-Sil Mun, Jin-Seop Kim, Ji-Heon Hong, Jae-Ho Yu and Dong-Yeop Lee
Abstract: The purpose of this study is investigating the difference in muscular activity of shoulder muscle depending on the shoulder angle and height of pelvic limb. The subject consisted of 20 healthy adult male and 10 healthy female excluding the ones with shoulder-related injury. The shoulder angle was set to 70, 90 and 110° according to the height of legs and the height of legs was set to 0, 50 and 80 cm. The experiment was conducted in random order. The statistical analysis used repeated ANOVA. According to the experiment result, the muscular activity of serratus anterior muscle, pectoralis major muscle and upper trapezuius muscle increased as shoulder angle increased. According to the result of this study, serratus anterior muscle, pectoralis major muscle and upper trapezuius muscle showed significant difference in muscular activity between 70° and 90° and between 70° and 110° but 90° and 110° did not show significant difference. Therefore, performing push-up plus by adjusting the height of the leg to healthy adults with weak shoulder muscle was effective.
Shin-Hye Baek, Eun-Sil Mun, Jin-Seop Kim, Ji-Heon Hong, Jae-Ho Yu and Dong-Yeop Lee, 2018. The Comparison of the Upper Limb Muscle Activity According to Shoulder Angle with the Push up Plus Exercise. Journal of Engineering and Applied Sciences, 13: 2909-2914.