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자료유형
학술저널
저자정보
저널정보
한국체육과학회 한국체육과학회지 한국체육과학회지 제14권 제2호
발행연도
2005.8
수록면
521 - 532 (12page)

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초록· 키워드

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The purpose of this study was ted investigate the metabolic responses to 60 minutes of steady state bicycle ergometer exercise with three different exercise intensities and determine the most optmal exercise intensity for imporving cardiorespiratory function and maximal substrate utilization rate; belowAT(the intensity 30 Watts belowAT), atAT and aboveAT(the intensity 30 Watts aboveAT). Ten baese female(n=10, 45.7±9.8 yrs)subjects performed 60-min continuous exercise on the cycle ergometer with three different exercise intensities. Oxygen uptake(VO₂), kcal, heart rate (HR), respiratory exchange ratio (RER), insulin, glucose, FFA(free fat mass) were measured throughout 60-min exercise of each of three exercise intensities. The repeated measure ANOVA was used to determine if significant differences exist among mean values within eachk variable. The two way repeated measure ANOVA was also used ted determine the group by time interaction effect of each variable.
Within the limitations and design of this study, the following conclusions can be drawn:
1. Insulin response was significantly changed at 15min, 30min, 45min, 60min only in intensity of at AT(p<.05).
2. FFA was significantly changed at 45min and 60min in the intensity of atAT and belowAT, FFA was also significantly changed 60min in the intensity of aboveAT(p<.05).
3. No significant differences wer observed in glucose with aboveAT, atAT, and belowAT during 60minute of exercise, respectively.
As exercise began, the heart rate and catecholamine secretion were increased, and this is very typical of physiological response to physical stimulus. In this study FFA was significantly increased in high intensity exercise unlikely observed in previous studies. This would speculate that lipid utilization could also occur at high in tensity exercise such as in AT level if the exercise prolonged more than 60minute. The glucose level was not changed, and this might explain that more lipid was utilized than glucose. Significant increase of energy expenditure showed that the prolonged exercise with thigh intensity might depend on additional energy source such as lipid. In conclusion, long durations of exercise with AT level was very effective in lipid utilization and energy expenditure in middle aged obese women.

목차

Abstract
Ⅰ. 서론
Ⅱ. 연구방법
Ⅲ. 결과
Ⅳ. 논의
Ⅴ. 결론
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