Heat production and quantitative oxidation of nutrients by physical activity in humans
Research output: Contribution to journal › Journal article › Research › peer-review
The effect of physical activity on heat production and oxidation of nutrients was measured by means of indirect calorimetry. The experiment included 6 male and 4 female healthy subjects who, during a 24-hour stay in the respiration chambers, performed, in the morning and afternoon, 15 min cycling with the total work of 6,750 kg m. Experiments were repeated twice (3- to 4-week interval) showing no differences between the gas exchange in the morning and afternoon and between first and second experiment. The gas exchange during cycling was about 4 times higher than during basal periods. The identical work of 66.2 kJ by cycling caused on average a heat increment of 309 kJ, yielding the mean energetic efficiency for the performed work of 0.22. The activity caused an increment of 11.5 g oxidized carbohydrate and 2.6 g oxidized fat.
Original language | English |
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Journal | Annals of Nutrition and Metabolism |
Volume | 38 |
Issue number | 1 |
Pages (from-to) | 8-12 |
Number of pages | 5 |
ISSN | 0250-6807 |
Publication status | Published - 1994 |
- Adult, Bicycling, Body Temperature Regulation, Diet, Dietary Carbohydrates, Dietary Fats, Energy Metabolism, Exercise, Female, Humans, Male, Middle Aged, Oxidation-Reduction, Pulmonary Gas Exchange
Research areas
ID: 44504204