%0 Journal Article
%T Influence of Running and Walking on Hormonal Regulators of Appetite in Women
%A D. Enette Larson-Meyer
%A Sonnie Palm
%A Aasthaa Bansal
%A Kathleen J. Austin
%A Ann Marie Hart
%A Brenda M. Alexander
%J Journal of Obesity
%D 2012
%I Hindawi Publishing Corporation
%R 10.1155/2012/730409
%X 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¡À206 kcal) versus walking (41¡À196 kcal) (=0.015), although both were suppressed (<0.05) compared to rest (299¡À308 and 284¡À121 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 (=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.
%U http://www.hindawi.com/journals/jobes/2012/730409/