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Open AccessArticle

The Effect of a 20 km Run on Appetite Regulation in Long Distance Runners

1
Graduate School of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
2
Department of Sports Science, Japan Institute of Sports Science, Nishigaoka, Kitaku, Tokyo 115-0056, Japan
*
Author to whom correspondence should be addressed.
Nutrients 2016, 8(11), 672; https://doi.org/10.3390/nu8110672
Received: 15 September 2016 / Revised: 13 October 2016 / Accepted: 14 October 2016 / Published: 26 October 2016
(This article belongs to the Special Issue Nutrition, Health and Athletic Performance)
The purpose of the present study was to investigate appetite-related hormonal responses and energy intake after a 20 km run in trained long distance runners. Twenty-three male long-distance runners completed two trials: either an exercise trial consisting of a 20 km outdoor run (EX) or a control trial with an identical period of rest (CON). Blood samples were collected to determine plasma acylated ghrelin, peptide YY3-36 (PYY3-36) and other hormonal and metabolite concentrations. Energy intake during a buffet test meal was also measured 30 min after the exercise or rest periods. Although plasma acylated ghrelin concentrations were significantly decreased after the 20 km run (p < 0.05), plasma PYY3-36 did not change significantly following exercise. Absolute energy intake during the buffet test meal in EX (1325 ± 55 kcal) was significantly lower than that in CON (1529 ± 55 kcal), and there was a relatively large degree of individual variability for exercise-induced changes in energy intake (−40.2% to 12.8%). However, exercise-induced changes in energy intake were not associated with plasma acylated ghrelin or PYY3-36 responses. The results demonstrated that a 20 km run significantly decreased plasma acylated ghrelin concentrations and absolute energy intake among well-trained long distance runners. View Full-Text
Keywords: appetite-related hormones; energy intake; long distance run; athletes appetite-related hormones; energy intake; long distance run; athletes
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Kojima, C.; Ishibashi, A.; Ebi, K.; Goto, K. The Effect of a 20 km Run on Appetite Regulation in Long Distance Runners. Nutrients 2016, 8, 672.

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