운동경험이 없는 남성의 저항성 운동강도 차이가 근 손상 지표, 근력 및 근 비대 효과에 미치는 영향

Abstract

This study was conducted to identify the intensity of resistance exercise that can improve muscle strength and hypertrophy while preventing muscle damage in untrained men in their 20s. Thirty men were divided into control group(n=10), low-load resistance exercise group(n=10), and high-load resistance exercise group(n=10). Resistance exercise of LLRG was performed with 40% 1RM, 3 sets, and repetitions per set until spontaneous muscle failure occurred. Resistance exercise of HLRG was performed with 80% 1RM, 3 sets, and repetitions per set until spontaneous muscle failure occurred. Resistance exercise was performed 3 times a week for a total of 12 weeks. After the end of the experiment, repeated measures ANOVA was performed to analyze the changes in the muscle damage indicator, muscle strength, and muscle hypertrophy. The results were as follows. Results of muscle damage indicator showed no significant difference in LLRG, but LDH, CK, Myoglobin, and AST significantly increased in HLRG after 12 weeks. And the result of muscle strength, both LLRG and HLRG were significantly increased, but HLRG was increased more than LLRG. In addition, the results of muscle mass were significantly increased to a similar level for both LLRG and HLRG. Summarizing the above results, it is judged that resistance exercise of 40% 1RM level of exercise intensity during the initial exercise plan for subjects without exercise experience can prevent muscle damage and increase muscle hypertrophy.