Abstract
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.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Annals of Nutrition and Metabolism |
| Vol/bind | 38 |
| Udgave nummer | 1 |
| Sider (fra-til) | 8-12 |
| Antal sider | 5 |
| ISSN | 0250-6807 |
| Status | Udgivet - 1994 |