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Broom DR et al. Acute effects of exercise intensity & duration on ghrelin & hunger 13-12-2016 JOE accepted.pdf (311.1 kB)

Acute effect of exercise intensity and duration on acylated ghrelin and hunger in men

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posted on 2017-01-06, 10:18 authored by David R. Broom, Masashi Miyashita, Lucy K. Wasse, Richard Pulsford, James KingJames King, Alice ThackrayAlice Thackray, David StenselDavid Stensel
Acute exercise transiently suppresses the orexigenic gut hormone acylated ghrelin, but the extent exercise intensity and duration determine this response is not fully understood. The effects of manipulating exercise intensity and duration on acylated ghrelin concentrations and hunger were examined in two experiments. In experiment one, nine healthy males completed three, 4-hour conditions (control, moderate-intensity running (MOD) and vigorous-intensity running (VIG)), with an energy expenditure of ~2.5 MJ induced in both MOD (55 min running at 52% peak oxygen uptake (VO2peak)) and VIG (36 min running at 75% VO2peak). In experiment two, nine healthy males completed three, 9-hour conditions (control, 45 min running (EX45) and 90 min running (EX90)). Exercise was performed at 70% VO2peak. In both experiments, participants consumed standardised meals, and acylated ghrelin concentrations and hunger were quantified at predetermined intervals. In experiment one, delta acylated ghrelin concentrations were lower than control in MOD (ES=0.44, P=0.01) and VIG (ES=0.98, P<0.001); VIG was lower than MOD (ES=0.54, P=0.003). Hunger ratings were similar across the conditions (P=0.35). In experiment two, delta acylated ghrelin concentrations were lower than control in EX45 (ES=0.77, P<0.001) and EX90 (ES=0.68, P<0.001); EX45 and EX90 were similar (ES=0.09, P=0.55). Hunger ratings were lower than control in EX45 (ES=0.20, P=0.01) and EX90 (ES=0.27, P=0.001); EX45 and EX90 were similar (ES=0.07, P=0.34). Hunger and delta acylated ghrelin concentrations remained suppressed at 1.5h in EX90 but not EX45. In conclusion, exercise intensity, and to a lesser extent duration, are determinants of the acylated ghrelin response to acute exercise.

Funding

The research was supported by the National Institute for Health Research (NIHR) Diet, Lifestyle & Physical Activity Biomedical Research Unit based at University Hospitals of Leicester and Loughborough University.

History

School

  • Sport, Exercise and Health Sciences

Published in

Journal of Endocrinology

Volume

232

Pages

411-422

Citation

BROOM, D.R. ... et al, 2016. Acute effect of exercise intensity and duration on acylated ghrelin and hunger in men. Journal of Endocrinology, 232, pp. 411-422.

Publisher

Bioscientifica © Society for Endocrinology

Version

  • AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

2016-12-13

Publication date

2016-12-20

Copyright date

2017

Notes

Disclaimer: this is not the definitive version of record of this article.This manuscript has been accepted for publication in Journal of Endocrinology, but the version presented here has not yet been copy-edited, formatted or proofed. Consequently, Bioscientifica accepts no responsibility for any errors or omissions it may contain. The definitive version is now freely available at http://dx.doi.org/10.1530/JOE-16-0561 2016.

ISSN

0022-0795

eISSN

1479-6805

Language

  • en

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