Multiple Bouts of short duration exercise has been recommended by fitness experts as an alternative for people who have little time for exercise. However, the effects of this mode of exercise, especially on energy expenditure, should be clarified further. Purpose: To investigate the effects of a single bout of long durartion (SL) exercise and multiple bouts of short duration (MS) exercise on energy expenditure. Methods: Sixteen healthy male senior high school students were served as subjects (Mean age: 16.8±0.32 yrs, HRrest: 75.6±6.9 bpm, VO2max: 51.6±5.6 ml/kg/min, and HRmax: 200.4±6.3 bpm). All subjects performed two different exercise bouts, witch were SL and MS, at the same intensity (60% VO2max) and total work duration (30 min). The SL exercise consisted of running one 30-minute bout on a treadmill, and the MS exercise consisted of three bouts of 10minutes running on a treadmill. Rest period between bouts of the MS group were 3 hrs. A repeated-measures design (3 days apart) was used, and the testing order was counter balanced. Results: Exercise energy expenditure for the SL exercise was 247.1±37.8 kcal, which did not differ from MS (247.7±33.2 kcal). Postexercise energy expenditure (PEE) for the SL (24.6±7.1 kcal) and total energy expenditure (TEE) for the SL (271.7±39.2 kcal) were significantly less than the MS (61.0±12.4 kcal; 308.7±42.5 kcal) (p<.05). The TEE from fat for SL (56.3±25.0 kcal) was significantly less than MS (73.9±26.6 kcal) (p<.05). Conclusion: Since MS exercise has a higher energy expenditure and uses more energy from fat, it is suggested that MS exercise could be a better alternative than SL exercise for lipid expenditure.
Multiple Bouts of short duration exercise has been recommended by fitness experts as an alternative for people who have little time for exercise. However, the effects of this mode of exercise, especially on energy expenditure, should be clarified further. Purpose: To investigate the effects of a single bout of long durartion (SL) exercise and multiple bouts of short duration (MS) exercise on energy expenditure. Methods: Sixteen healthy male senior high school students were served as subjects (Mean age: 16.8±0.32 yrs, HRrest: 75.6±6.9 bpm, VO2max: 51.6±5.6 ml/kg/min, and HRmax: 200.4±6.3 bpm). All subjects performed two different exercise bouts, witch were SL and MS, at the same intensity (60% VO2max) and total work duration (30 min). The SL exercise consisted of running one 30-minute bout on a treadmill, and the MS exercise consisted of three bouts of 10minutes running on a treadmill. Rest period between bouts of the MS group were 3 hrs. A repeated-measures design (3 days apart) was used, and the testing order was counter balanced. Results: Exercise energy expenditure for the SL exercise was 247.1±37.8 kcal, which did not differ from MS (247.7±33.2 kcal). Postexercise energy expenditure (PEE) for the SL (24.6±7.1 kcal) and total energy expenditure (TEE) for the SL (271.7±39.2 kcal) were significantly less than the MS (61.0±12.4 kcal; 308.7±42.5 kcal) (p<.05). The TEE from fat for SL (56.3±25.0 kcal) was significantly less than MS (73.9±26.6 kcal) (p<.05). Conclusion: Since MS exercise has a higher energy expenditure and uses more energy from fat, it is suggested that MS exercise could be a better alternative than SL exercise for lipid expenditure.
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