Authors : Ki-Hong Kim, Hwan-Jong Jeong, Sung-Sik Ko and Chun-Ho Yang
Abstract: The purpose of this study was to investigate the effect of four different warm-up conditions on the iEMG of agonist muscles during a 75% 1RM bench press. The subjects were eight healthy males in their 20’s from Chungnam Province, Republic of Korea. The iEMGs of the pectoralis major, the anterior deltoid and the triceps brachii lateral head were measured at the bench press. A mixed-design two-way ANOVA was calculated and the significance level was set at p<0.05. First, the iEMG changes in the pectoralis major, anterior deltoid and Triceps brachii lateral head were gradually higher in the 3, 6 and 9 sets. Second as the set of 3, 6 and 9 sets was progressed, iEMG changes showed the highest increase in triceps brachii lateral head, followed by anterior deltoid and pectoralis major order. Third, iEMG of pectoralis major, anterior deltoid and triceps brachii lateral head did not show significant difference at 75% 1RM bench press according to preparation exercise. In conclusion, a large number of preparatory exercises result in excessive muscle activity of the upper arm, resulting in decreased performance in this exercise. Therefore in this study, three sets of preparation exercises are considered to be the most suitable preparation exercise.
Ki-Hong Kim, Hwan-Jong Jeong, Sung-Sik Ko and Chun-Ho Yang, 2018. Effects of Intensity of Warm up on Iemg Response During Bench Press. Journal of Engineering and Applied Sciences, 13: 3871-3876.