International journal of food sciences and nutrition
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Int J Food Sci Nutr · Jul 1996
Does moderate aerobic activity have a stimulatory effect on 24 h resting energy expenditure: a direct calorimeter study.
This study was designed to establish whether moderate aerobic exercise (2 h at 30-35% VO2 max) in lean non-athletic male adults had a prolonged stimulatory effect on energy expenditure while at rest. Four weight maintaining male adults had their 24 h energy expenditure measured by direct calorimetry on four separate occasions. During the 24 h in the calorimeter each subject received a diet which in total supplied 35 kcal (146 kJ) per kg body weight. ⋯ Total 24 h energy expenditure was greater on exercise (8.3 +/- 1.8 MJ/day) than non-exercising days (6.3 +/- 1.4 MJ/day, P < 0.001) In contrast when the acute effects of the cycling where removed 24 h resting energy expenditure on the exercise day (6.8 +/- 1.7 MJ/day) was not significantly different from that of rest days (95% confidence intervals of the difference ranged from -0.36 to 1.27 MJ/day). This study did not demonstrate a prolonged stimulatory influence on non-exercising resting energy expenditure following physical activity likely to be achieved by non-athletes. These data provide no evidence that such exercise is associated with a greater energy deficit than that due to the activity itself.