Journal
APPETITE
Volume 49, Issue 3, Pages 644-651Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.appet.2007.04.004
Keywords
physical fitness; physical activity; subjective appetite; food intake
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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 (F1) and subjective appetite were measured in response to sweetened preloads of either a SPLENDA (R) Sucralose control, glucose or whey protein made up to 250 ml with water, given in random order to each boy, 2 h after a standardized breakfast. Subjective average appetite and prospective food consumption scores increased after physical activity. VeT was positively associated with F1 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. (c) 2007 Elsevier Ltd. All rights reserved.
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