The effects of exercise and ambient temperature on dietary intake, appetite sensation, and appetite regulating hormone concentrations.
Acylated ghrelin
Appetite
Dietary intake
Exercise
GLP-1
Leptin
PYY
Journal
Nutrition & metabolism
ISSN: 1743-7075
Titre abrégé: Nutr Metab (Lond)
Pays: England
ID NLM: 101231644
Informations de publication
Date de publication:
2019
2019
Historique:
received:
07
11
2018
accepted:
25
03
2019
entrez:
14
5
2019
pubmed:
14
5
2019
medline:
14
5
2019
Statut:
epublish
Résumé
It is not clear whether the frequently reported phenomenon of exercise-induced anorexia is exacerbated or blunted in warm or cold environments. Therefore, this study investigated the effects of exercise in three different environmental temperatures vs. rest, on perceptions of appetite, appetite regulating hormones, and food intake. In a randomized repeated-measures design, 18 Canadian Armed Forces members (14 male, 4 female) completed four 8-h trials in a thermally-controlled chamber: one 8-h resting trial at 21 °C (Sedentary); and three trials where participants completed two 2-h circuits of standardized military tasks interspersed with two 2-h rest periods, once at 30 °C (Hot), once at 21 °C (Temperate), and once at - 10 °C (Cold). Participants consumed military field rations ad libitum and had their appetite assessed with visual analogue scales. Plasma concentrations of GLP-1, PYY, acylated ghrelin, and leptin were also determined. Appetite was perceived as being suppressed in the heat compared to the cold ( In this study where food was freely available, variations in ambient temperature, exercise vs. rest, appetite-regulating hormone concentrations, and subjective appetite sensation were not associated with any changes in dietary intake within 24-h of acute, prolonged exercise.
Sections du résumé
BACKGROUND
BACKGROUND
It is not clear whether the frequently reported phenomenon of exercise-induced anorexia is exacerbated or blunted in warm or cold environments. Therefore, this study investigated the effects of exercise in three different environmental temperatures vs. rest, on perceptions of appetite, appetite regulating hormones, and food intake.
METHODS
METHODS
In a randomized repeated-measures design, 18 Canadian Armed Forces members (14 male, 4 female) completed four 8-h trials in a thermally-controlled chamber: one 8-h resting trial at 21 °C (Sedentary); and three trials where participants completed two 2-h circuits of standardized military tasks interspersed with two 2-h rest periods, once at 30 °C (Hot), once at 21 °C (Temperate), and once at - 10 °C (Cold). Participants consumed military field rations ad libitum and had their appetite assessed with visual analogue scales. Plasma concentrations of GLP-1, PYY, acylated ghrelin, and leptin were also determined.
RESULTS
RESULTS
Appetite was perceived as being suppressed in the heat compared to the cold (
CONCLUSIONS
CONCLUSIONS
In this study where food was freely available, variations in ambient temperature, exercise vs. rest, appetite-regulating hormone concentrations, and subjective appetite sensation were not associated with any changes in dietary intake within 24-h of acute, prolonged exercise.
Identifiants
pubmed: 31080490
doi: 10.1186/s12986-019-0348-5
pii: 348
pmc: PMC6501331
doi:
Types de publication
Journal Article
Langues
eng
Pagination
29Déclaration de conflit d'intérêts
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study protocol was reviewed and approved by institutional human research ethics committees at Defence Research and Development Canada (#2013–075), and the University of Toronto (#29914).Not applicable.MA is a Mitacs Elevate Postdoctoral Fellow as of September 2017 and is jointly funded by Mitacs and Nestlé Research Center. However, neither of the organizations were involved in any way with respect to the research presented within this manuscript. All remaining authors declare that they have no competing interests.Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
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