The purpose of this study was to compare fat oxidation at different exercise modes(treadmill vs cycle ergometer) and different exercise intensities which include maximal fat oxidation exercise intensity(MFOEI), 40%VO₂max and 60%VO₂max for lasting 40min. Ten healthy volunteers of S university(age, 19...
The purpose of this study was to compare fat oxidation at different exercise modes(treadmill vs cycle ergometer) and different exercise intensities which include maximal fat oxidation exercise intensity(MFOEI), 40%VO₂max and 60%VO₂max for lasting 40min. Ten healthy volunteers of S university(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 two maximal graded exercise test to determine MFOEI, and submaximal exercise test at different exercise intensities on separate days. To determine MFOEI, it was used Bruce protocol in the treadmill and intial 50W, increment 25W every 2min in the cycle ergometer exercise test. During each test, expired gases were collected and analyzed each 1 min using QMC(USA) metabolic cart. MFOEI was defined as the intensity which resulted in maximal fat kilocarolies per minute(Fkcal) as determined by converting VO₂ to Fkcal at each treadmill and cycle ergometer stage using HER and a Lusk table. MFOEI was analyzed using paired t-test between treadmill and cycle ergometer. And physiological and metabolic variables were analyzed using two way repeated ANOVA at different exercise modes and exercise intensities. The results were as follows: 1. MFOEI for exercise mode was significantly higher at treadmill(44.2%VO₂max) than at cycle ergometer(37.7%VO₂max)(p<O.05). 2. VO₂ and total kilocarolies per minute(Fkcal) during submaximal exercise were significantly higher with the treadmill than with cycle ergometer at three exercise intensities(p<0.05) and significantly highest at 60%VO₂max for two exercise modes(p<0.05). 3. RER and percent of fat oxidation were not significantly difference between treadmill and cycle ergometer, but there was significantly difference between 40%VO₂max and 60%VO₂max. 4. Fat oxidation was not significantly difference at three exercise modes, but was higher with treadmill than cycle ergometer at 40%VO₂max and MOFOEI. In conclusion, fat oxidation was not different between MFOEI and 40-60%VO₂max which be recommended for weight control. Therefore, to determine MFOEI which purpose to weight to control, it should be required further study which compare various facotrs such exercise protocol, exercise mode, exercise duration, sex difference, and individual condition.
The purpose of this study was to compare fat oxidation at different exercise modes(treadmill vs cycle ergometer) and different exercise intensities which include maximal fat oxidation exercise intensity(MFOEI), 40%VO₂max and 60%VO₂max for lasting 40min. Ten healthy volunteers of S university(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 two maximal graded exercise test to determine MFOEI, and submaximal exercise test at different exercise intensities on separate days. To determine MFOEI, it was used Bruce protocol in the treadmill and intial 50W, increment 25W every 2min in the cycle ergometer exercise test. During each test, expired gases were collected and analyzed each 1 min using QMC(USA) metabolic cart. MFOEI was defined as the intensity which resulted in maximal fat kilocarolies per minute(Fkcal) as determined by converting VO₂ to Fkcal at each treadmill and cycle ergometer stage using HER and a Lusk table. MFOEI was analyzed using paired t-test between treadmill and cycle ergometer. And physiological and metabolic variables were analyzed using two way repeated ANOVA at different exercise modes and exercise intensities. The results were as follows: 1. MFOEI for exercise mode was significantly higher at treadmill(44.2%VO₂max) than at cycle ergometer(37.7%VO₂max)(p<O.05). 2. VO₂ and total kilocarolies per minute(Fkcal) during submaximal exercise were significantly higher with the treadmill than with cycle ergometer at three exercise intensities(p<0.05) and significantly highest at 60%VO₂max for two exercise modes(p<0.05). 3. RER and percent of fat oxidation were not significantly difference between treadmill and cycle ergometer, but there was significantly difference between 40%VO₂max and 60%VO₂max. 4. Fat oxidation was not significantly difference at three exercise modes, but was higher with treadmill than cycle ergometer at 40%VO₂max and MOFOEI. In conclusion, fat oxidation was not different between MFOEI and 40-60%VO₂max which be recommended for weight control. Therefore, to determine MFOEI which purpose to weight to control, it should be required further study which compare various facotrs such exercise protocol, exercise mode, exercise duration, sex difference, and individual condition.
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