보디빌더의 저항훈련 중 회복시간의 차이가 혈중 GH, Testosterone, Ghrelin의 농도 및 신체구성에 미치는 영향

The purpose of this study is to examine the effect of resting time between sets in bodybuilding athletes on blood concentration of Growth hormone, testosterone, Ghrelin and body composition, providing an efficient training method that can apply appropriate resting time between training sets according to the purpose of training. 24 bodybuilding athletes in their twenties preparing to participate in a competition to be held 16 weeks later, who were ranked top 3 or better in a city or nation-wide competition, were selected as subjects of this study. 8 subjects were assigned to 30sec group, 60sec group, and 120sec group. Two-way ANOVA with repeated measurements was performed using SPSS 18.0. As a result of analysis, Growth hormone was significantly increased in 30sec and 60sec groups after training. Secretion of testosterone after training was higher in 30sec group compared to 120sec group. Third, there was a significant increase in Ghrelin after training in 60sec and 120sec groups. Percent body fat was significant reduced in all three groups after training, lower in 120sec group than in 30sec group. Muscle mass was significantly increased after training in all three groups. Therefore, shorter resting time between sets is considered to be advantageous for increasing muscle mass. Desirable resting time between sets to reduce body fat is believed to be about two minutes.