Effect of Exercise Intensity on Appetite in Highly Trained Women

Sm, Howe; Tm, Hand; De, Larson-Meyer; Kj, Austin; Bm, Alexander; Mm, Manore

doi:10.1249/01.mss.0000485663.64291.1a

Cited by 1 publication

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“…The hunger outcomes reported here are consistent with previous findings published within and external to our laboratory which have shown that single bouts of moderate-to high-intensity aerobic exercise transiently suppress hunger but have little impact in the hours afterwards (22,23,25,26,29,30,37). Specifically, in our pool of 178 individuals, group-level analyses showed that mean hunger perceptions are suppressed by approximately one-third during exercise which represents a medium-to large-sized statistical effect.…”

Section: Discussionsupporting

confidence: 91%

Individual Variation in Hunger, Energy Intake, and Ghrelin Responses to Acute Exercise

King

Deighton

Broom

et al. 2017

Medicine &Amp; Science in Sports &Amp; Exercise

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length : 275 wordsManuscript length: 6558 words 3 ABSTRACT Purpose: To characterise the immediate and extended impact of acute exercise on hunger, energy intake and circulating acylated ghrelin concentrations using a large dataset of homogenous experimental trials; and to describe the variation in responses between individuals. Methods: Data from 17 of our group's experimental crossover trials were aggregated yielding a total sample of 192 young, healthy, males. In these studies, single bouts of moderate to high-intensity aerobic exercise (69 ± 5% VO2 peak; mean ± SD) were completed with detailed participant assessments occurring during and for several hours post-exercise.Mean hunger ratings were determined during (n = 178) and after (n = 118) exercise from visual analogue scales completed at 30 min intervals whilst ad libitum energy intake was measured within the first hour after exercise (n = 60) and at multiple meals (n = 128) during the remainder of trials. Venous concentrations of acylated ghrelin were determined at strategic time points during (n = 118) and after (n = 89) exercise. Results: At group-level, exercise transiently suppressed hunger (P < 0.010; Cohen's d = 0.77) but did not affect energy intake. Acylated ghrelin was suppressed during exercise (P < 0.001; Cohen's d = 0.10) and remained significantly lower than control (no exercise) afterwards (P < 0.024; Cohen's d = 0.61).Between participants, there were notable differences in responses however a large proportion of this spread lay within the boundaries of normal variation associated with biological and technical assessment error. Conclusion: In young men, acute exercise suppresses hunger and circulating acylated ghrelin concentrations with notable diversity between individuals. Care must be taken to distinguish true inter-individual variation from random differences within normal limits.

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