title: Metabolic responses during postprandial exercise.
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.
authors.affiliation: Human Performance Laboratory, Department of Health and Exercise Science, The College of New Jersey, Ewing, New Jersey 08628, USA. kang@tcnj.edu
authors.forename: Jie
authors.initials: J
authors.lastname: Kang
authors.forename: Emily
authors.initials: E
authors.lastname: Raines
authors.forename: Joseph
authors.initials: J
authors.lastname: Rosenberg
authors.forename: Nicholas
authors.initials: N
authors.lastname: Ratamess
authors.forename: Fernando
authors.initials: F
authors.lastname: Naclerio
authors.forename: Avery
authors.initials: A
authors.lastname: Faigenbaum
mesh_terms: D000328:Adult; D001481:Basal Metabolism / Q000502:physiology*; D004734:Energy Metabolism / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D062407:Meals; D010101:Oxygen Consumption / Q000502:physiology*; D019518:Postprandial Period / Q000502:physiology*; D013997:Time Factors; D055815:Young Adult