12주간의 저강도 유산소운동에 따른 최대산소섭취량과 간 기능 수치(ALT, AST)의 변화: 중년 남성을 대상으로

Abstract

The purpose of this study was to investigate the effect of participation in twelve-weeks low-intensity aerobic exercise program on cardiorespiratory fitness and hepatic marker (ALT: alanine aminotransferase, AST: aspartate aminotransferase) among middle-aged men. A total of 27 subjects (exercise group: 14, control group: 13) participated in twelve-weeks low-intensity aerobic exercise program [walking (intensity: VO2max 50%)] were included in the study. We measured body composition, VO2max, ALT, and AST. Results showed that VO2max (Pre: 40.99±5.51ml/kg/min, Post: 44.64±5.80ml/kg/min, p<.01), weight, and BMI (body mass index) were significantly improved after exercise intervention. ALT(Pre: 22.35±10.52IU/L, Post: 18.92±6.91IU/L, p=.08) and AST(Pre: 22.42±6.46IU/L, Post: 20.64±3.75IU/L, p=.27) decreased after exercise intervention, but it was not significantly. In conclusion, this study showed that participating in twelve-weeks low-intensity aerobic exercise program improves body composition, VO2max(cardiorespiratory fitness level), and hepatic markers.