Effect of short-duration physical activity and ventilation threshold on subjective appetite and short-term energy intake in boys.
The purpose of this investigation was twofold: (1) to examine the role of low- to moderate-intensity, short-duration physical activity on subjective appetite and (2) to identify the role of and associations between ventilation threshold (VeT) and energy intake at a pizza lunch 30 min after glucose and whey protein drinks in normal weight boys. In 14 boys (age: 12.5+/-0.4 years) subjective appetite was measured before and after a 12 min walking protocol designed to determine physical fitness based on the VeT. On a separate occasion food intake (FI) and subjective appetite were measured in response to sweetened preloads of either a SPLENDA Sucralose control, glucose or whey protein made up to 250 ml with water, given in random order to each boy, 2h after a standardized breakfast. Subjective average appetite and prospective food consumption scores increased after physical activity. VeT was positively associated with FI at a pizza lunch consumed 30 min after glucose and whey protein drinks. Glucose and whey protein reduced FI similarly at lunch compared with control. In conclusion, appetite is increased by low- to moderate-intensity, short-duration physical activity and FI following glucose and protein preloads is positively associated with fitness levels in boys.
Bellissimo
Nick
N
Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, FitzGerald Building, 150 College St., Toronto, Ont., Canada M5S 3E2.
Thomas
Scott G
SG
Goode
Robert C
RC
Anderson
G Harvey
GH
D001066:Appetite / Q000502:physiology*; D019540:Area Under Curve; D002648:Child; D018592:Cross-Over Studies; D019422:Dietary Sucrose / Q000008:administration & dosage; D002149:Energy Intake / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D006801:Humans; D008297:Male; D008894:Milk Proteins / Q000008:administration & dosage; D010101:Oxygen Consumption; D010809:Physical Fitness; D012528:Satiety Response / Q000187:drug effects* / Q000502:physiology; D013549:Sweetening Agents / Q000008:administration & dosage; D013997:Time Factors; D000067816:Whey Proteins
D019422:Dietary Sucrose; D008894:Milk Proteins; D013549:Sweetening Agents; D000067816:Whey Proteins