Comparison of Conventional and Individualized 1-MET Values for Expressing Maximum Aerobic Metabolic Rate and Habitual Activity Related Energy Expenditure.

Détails

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Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_416AE2A7B001
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Comparison of Conventional and Individualized 1-MET Values for Expressing Maximum Aerobic Metabolic Rate and Habitual Activity Related Energy Expenditure.
Périodique
Nutrients
Auteur⸱e⸱s
Heydenreich J., Schutz Y., Melzer K., Kayser B.
ISSN
2072-6643 (Electronic)
ISSN-L
2072-6643
Statut éditorial
Publié
Date de publication
22/02/2019
Peer-reviewed
Oui
Volume
11
Numéro
2
Langue
anglais
Notes
Publication types: Comparative Study ; Journal Article
Publication Status: epublish
Résumé
The maximum aerobic metabolic rate can be expressed in multiple metabolically equivalent tasks (MET), i.e., METmax. The purpose was to quantify the error when the conventional (3.5 mL∙kg <sup>-1</sup> ∙min <sup>-1</sup> ) compared to an individualized 1-MET-value is used for calculating METmax and estimating activity energy expenditure (AEE) in endurance-trained athletes (END) and active healthy controls (CON). The resting metabolic rate (RMR, indirect calorimetry) and aerobic metabolic capacity (spiroergometry) were assessed in 52 END (46% male, 27.9 ± 5.7 years) and 53 CON (45% male, 27.3 ± 4.6 years). METmax was calculated as the ratio of VO₂max over VO₂ during RMR (METmax_ind), and VO₂max over the conventional 1-MET-value (METmax_fix). AEE was estimated by multiplying published MET values with the individual and conventional 1-MET-values. Dependent t-tests were used to compare the different modes for calculating METmax and AEE (α = 0.05). In women and men CON, men END METmax_fix was significantly higher than METmax_ind (p < 0.01), whereas, in women END, no difference was found (p > 0.05). The conventional 1-MET-value significantly underestimated AEE in men and women CON, and men END (p < 0.05), but not in women END (p > 0.05). The conventional 1-MET-value appears inappropriate for determining the aerobic metabolic capacity and AEE in active and endurance-trained persons.
Mots-clé
Adult, Energy Metabolism/physiology, Exercise, Female, Humans, Male, Oxygen Consumption, Sex Characteristics, endurance athletes, energy expenditure, maximum oxygen consumption, resting metabolic rate
Pubmed
Web of science
Open Access
Oui
Création de la notice
07/04/2019 14:36
Dernière modification de la notice
20/08/2019 13:41
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