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Influence of Running and Walking on Hormonal Regulators of Appetite in Women
Larson-Meyer, D. Enette Palm, Sonnie Bansal, Aasthaa Austin, Kathleen J. Hart, Ann Marie Alexander, Brenda M.
Larson-Meyer, D. Enette
Palm, Sonnie
Bansal, Aasthaa
Austin, Kathleen J.
Hart, Ann Marie
Alexander, Brenda M.
Abstract
Description
Nine female runners and ten walkers completed a 60 min moderate-intensity (70% VO2max) run or walk, or 60 min rest in counterbalanced order. Plasma concentrations of the orexogenic peptide ghrelin, anorexogenic peptides peptide YY (PYY), glucagon-like peptide-1 (GLP-1), and appetite ratings were measured at 30 min interval for 120 min, followed by a free-choice meal. Both orexogenic and anorexogenic peptides were elevated after running, but no changes were observed after walking. Relative energy intake (adjusted for cost of exercise/rest) was negative in the meal following running (-194 ± 206 kcal) versus walking (41 ± 196 kcal) (P = 0.015), although both were suppressed (P < 0.05) compared to rest (299 ± 308 and 284 ± 121 kcal, resp.). The average rate of change in PYY and GLP-1 over time predicted appetite in runners, but only the change in GLP-1 predicted hunger (P = 0.05) in walkers. Results provide evidence that exercise-induced alterations in appetite are likely driven by complex changes in appetite-regulating hormones rather than change in a single gut peptide.
Date
2012-01-01
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University of Wyoming. Libraries
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Keywords
Medicine and Health Sciences