title: High- and moderate-intensity aerobic exercise and excess post-exercise oxygen consumption in men with metabolic syndrome.
abstract: Physical activity is central in prevention and treatment of metabolic syndrome. High-intensity aerobic exercise can induce larger energy expenditure per unit of time compared with moderate-intensity exercise. Furthermore, it may induce larger energy expenditure at post-exercise recovery. The aim of this study is to compare the excess post-exercise oxygen consumption (EPOC) in three different aerobic exercise sessions in men with metabolic syndrome. Seven men (age: 56.7 ± 10.8) with metabolic syndrome participated in this crossover study. The sessions consisted of one aerobic interval (1-AIT), four aerobic intervals (4-AIT), and 47-min continuous moderate exercise (CME) on separate days, with at least 48 h between each test day. Resting metabolic rate (RMR) was measured pre-exercise and used as baseline value. EPOC was measured until baseline metabolic rate was re-established. An increase in O2 uptake lasting for 70.4 ± 24.8 min (4-AIT), 35.9 ± 17.3 min (1-AIT), and 45.6 ± 17.3 min (CME) was observed. EPOC were 2.9 ± 1.7 L O2 (4-AIT), 1.3 ±  .1 L O2 (1-AIT), and 1.4 ± 1.1 L O2 (CME). There were significant differences (P < 0.001) between 4-AIT, CME, and 1-AIT. Total EPOC was highest after 4-AIT. These data suggest that exercise intensity has a significant positive effect on EPOC in men with metabolic syndrome.
authors.affiliation: K.G. Jebsen Center for Exercise in Medicine at Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Department of Sport and Physical Education, Nord-Trøndelag University College, Levanger, Norway.
authors.forename: I
authors.initials: I
authors.lastname: Larsen
authors.forename: B
authors.initials: B
authors.lastname: Welde
authors.forename: C
authors.initials: C
authors.lastname: Martins
authors.forename: A E
authors.initials: AE
authors.lastname: Tjønna
mesh_terms: D000328:Adult; D000368:Aged; D001481:Basal Metabolism / Q000502:physiology; D018592:Cross-Over Studies; D015444:Exercise / Q000502:physiology*; D006801:Humans; D008297:Male; D024821:Metabolic Syndrome / Q000503:physiopathology*; D008875:Middle Aged; D010101:Oxygen Consumption / Q000502:physiology*; D064797:Physical Conditioning, Human / Q000379:methods
keywords: Energy expenditure; aerobic interval training; continuous moderate exercise; untrained subjects