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초록· 키워드
The purpose of this study was to compare physiological and metabolic variables during exercise which include maximal fat oxidation exercise intensity(MFOEI), 40%VO₂max and 60%VO₂max for lasting 40min on cycle ergometer. 1en healthy volunteers(age, 19.7±1.06years; height, 175.2±5.86㎝, weight, 68.7.±6.05㎏, body fat, 13.4±2.75%) served as subjects after signing an informed consent form. Following an overnight fast, subjects completed maximal graded exercise test to determine MFOEI, and submaximal exercise test at difference exercise intensities on separate days. To determine MFOEI, it was used on the cycle erogmeter(2-min stage, 25W increments). Expired gases were collected and analyzed each 1 min using QMC(USA) metabolic cart. The maximal fat oxidation exercise intensity(MFOEI) was defined as the intensity which resulted in maximal fat kilocarolies per minute(Fkcal) as determined by converting VO₂ to Fkcal at each cycle exercise stage using RER and a Lusk table. MFOEI by maximal graded exercise test on the cycle ergometer was 37.5±11.52VO₂max. Physiological and metabolic variables at difference exercise intensities(MFOEI, 40%VO₂max, and 60%VO₂max) was compared using One way repeated ANOVA. Significance was set at P$lt;0.05. VO₂(1.36±0.13, 40%VO₂max; 1.37±0.41, MFOEI and 2.01±0.17ℓ/min, 60%VO₂max) and, total kilocarolies per min(Tkcal)(6.49±0.61, 6.58±2.08, and 9.76±0.78kcal/min, respectively) were significantly highest at 60%VO₂max(p$lt;.05). RER(0.79±0.01, 40%VO₂max; 0.82±0.05, MFOEI and 0.84±0.04Kcal/min, 60%VO₂max) was significantly highest at 40%VO₂max(p$lt;.05). However, Fkcal and percent of fat oxidation were not significantly different at three intensities exercise. Since percent of fat oxidation was higher with 40%VO₂max compared with 60%VO₂max, while Tkcal was higher at 60%VO₂max than 40%VO₂max during 40min exercise, Fkcal was similar at difference exercise intensities. In conclusion, exercise prescription for weight control should be included factors such exercise intensity, exercise duration and exercise mode.
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참고문헌
참고문헌 신청최근 본 자료
UCI(KEPA) : I410-ECN-0101-2015-370-002762707
