The Korean Journal of Physical Education (한국체육학회지)

Korean Alliance for Health: Physical Education: Recreation:and Dance (한국체육학회)
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The effects of acute weight-training with different intensities on physiological variables during exercise and excess post-exercise oxygen consumption and energy expenditure after exercise.

웨이트 트레이닝의 운동강도가 운동중 생리적 변인과 운동후 초과산소소비량 및 에너지소비량에 미치는 영향

Kim, Yun-Mi;Gang, Suh-Jung
김윤미;강서정

  • Published : 2005.11.30
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Abstract

The purpose of the study was to analyze the effects two different exercise intensities, 50% and 75% of 1RM, of weight training on excess postexercise oxygen consumption (ERX:), heart rate (HR), blood lactate (La), respiratory exchange ratio (RER), and energy expenditure (EE). Eight sedentary female subjects performed eight types of weight training with an equal work volume for 2 sets of 15 repetitions at 50% of their 1RM, and 2 sets of 10 repetitions at 75% of their 1RM, respectively. HR, La, RER were measured during exercise and 5, 10, 30, and 60 minutes postexercise. EPOC, was measured at intervals 0-5 min, 15-30 min, and 45-60 mins postexercise, and EE was measured during exercise. Independent t-test was used to compare the differences of HR and La during the exercise at two different intensities. Two-way repeated measures ANOVA was used to analyze the differences of EPOC, RER, HR, and La at two different exercise intensities. EPOC, RER, EE, HR, and La did now show significant differences between two intensities. However, significant differences were found within group (P$\leq$.05, p$\leq$.01, p$\leq$.00l). Even no significant differences between 2 intensities were found in this study these data indicated that weight training produced energy shift towards free fatty acid (FFA) metabolism These results supported the previous studies indicating additional energy utilization in the post exercise periods and suggest that weight training is significant to a body mass management program.

Keywords

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