title: The effect of an incremental increase in exercise on appetite, eating behaviour and energy balance in lean men and women feeding ad libitum.
abstract: The effects of incremental exercise on appetite, energy intake (EI), expenditure (EE) and balance (EB) in lean men and women were examined. Six men (age 29.7 (SD 5.9) years, weight 75.2 (SD 15.3) kg, height 1.75 (SD 0.11) m) and six women (age 24.7 (SD 5.9) years, weight 66.7 (SD 9.10) kg, height 1.70 (SD 0.09) m) were each studied three times during a 16 d protocol, corresponding to no additional exercise (Nex), moderate-intensity exercise (Mex; 1.5-2.0 MJ/d) and high-intensity exercise (Hex; 3.0-4.0 MJ/d) regimens. Subjects were fed to EB during days 1-2, and during days 3-16 they fed ad libitum from a medium-fat diet of constant composition. Daily EE, assessed using the doubly labelled water method, was 9.2, 11.6 and 13.7 MJ/d (P < 0.001; SED 0.45) for the women and 12.2, 14.0 and 16.7 MJ/d (P = 0.007; SED 1.11) for the men on the Nex, Mex and Hex treatments, respectively. EI was 8.3, 8.6 and 9.9 MJ/d (P = 0.118; SED 0.72) for the women and 10.6, 11.6 and 12.0 MJ/d (P = 0.031; SED 0.47) for the men, respectively. On average, subjects compensated for about 30 % of the exercise-induced energy deficit. However, the degree of compensation varied considerably among individuals. The present study captured the initial compensation in EI for exercise-induced energy deficits. Total compensation would take a matter of weeks.
authors: The Rowett Research Institute, Greenburn Road, Aberdeen AB21 9SB, UK. S.Whybrow@Rowett.ac.uk
authors: Stephen
authors: S
authors: Whybrow
authors: Darren A
authors: DA
authors: Hughes
authors: Patrick
authors: P
authors: Ritz
authors: Alexandra M
authors: AM
authors: Johnstone
authors: Graham W
authors: GW
authors: Horgan
authors: Neil
authors: N
authors: King
authors: John E
authors: JE
authors: Blundell
authors: R James
authors: RJ
authors: Stubbs
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001066:Appetite / Q000502:physiology*; D002153:Calorimetry, Indirect; D018592:Cross-Over Studies; D004032:Diet; D004326:Drinking; D002149:Energy Intake / Q000502:physiology; D004734:Energy Metabolism / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D005247:Feeding Behavior / Q000502:physiology*; D005260:Female; D006339:Heart Rate; D006801:Humans; D006815:Hunger; D008297:Male; D013997:Time Factors