Abstract des Autors

To examine metabolic interaction between meal and exercise, 10 men and 10 women completed three trials: exercise (E), consumption of a meal (M), and consumption of a meal followed by exercise (M+E). All trials commenced after an overnight fast and were preceded by a rest period in which resting metabolic rate (RMR) was determined. The meal contained 721 kilocalories composed of 41 percent, 36 percent, and 23 percent of carbohydrate, lipids, and protein, respectively. Exercise protocol consisted of three continuous 10-minute cycling at 50 percent, 60 percent, and 70 percent VO2peak. Measurement began 60 min after the start of the meal and included VO2 that was used to determine meal-induced thermogenesis (MIT). VO2 was greater (p < .05) in M+E than in E at 50 percent and 60 percent VO2peak. MIT was higher (p < .05) during exercise at 50 percent VO2peak than at rest. It appears that postprandial exercise of mild intensities can potentiate MIT, thereby provoking a greater increase in energy expenditure. Verf.-Referat