1. Metabolic Responses During Postprandial Exercise.
- Author
-
Kang, Jie, Raines, Emily, Rosenberg, Joseph, Ratamess, Nicholas, Naclerio, Fernando, and Faigenbaum, Avery
- Subjects
- *
ANALYSIS of variance , *ANTHROPOMETRY , *BASAL metabolism , *CARDIOPULMONARY system , *CLINICAL trials , *CROSSOVER trials , *CYCLING , *ENERGY metabolism , *EXERCISE , *EXERCISE physiology , *EXERCISE tests , *INGESTION , *MATHEMATICS , *PULMONARY gas exchange , *STATISTICAL sampling , *BODY mass index , *RANDOMIZED controlled trials , *REPEATED measures design , *OXYGEN consumption , *ERGOMETRY , *EXERCISE intensity , *DESCRIPTIVE statistics - Abstract
To examine metabolic interaction between meal and exercise, 10 men and 10 women completed three trials: (1) exercise (E), (2) consumption of a meal (M), and (3) 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%, 36%, and 23% of carbohydrate, lipids, and protein, respectively. Exercise protocol consisted of three continuous 10-minute cycling at 50%, 60%, and 70% 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% and 60% VO2peak. MIT was higher (p <.05) during exercise at 50% VO2peak than at rest. It appears that postprandial exercise of mild intensities can potentiate MIT, thereby provoking a greater increase in energy expenditure. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF