Metabolic Equivalent in Adolescents, Active Adults and Pregnant Women.

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Version: author
Serval ID
serval:BIB_47F3F7CA480C
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Metabolic Equivalent in Adolescents, Active Adults and Pregnant Women.
Journal
Nutrients
Author(s)
Melzer K., Heydenreich J., Schutz Y., Renaud A., Kayser B., Mäder U.
ISSN
2072-6643 (Electronic)
ISSN-L
2072-6643
Publication state
Published
Issued date
20/03/2016
Peer-reviewed
Oui
Volume
8
Number
7
Pages
E438
Language
english
Notes
Publication types: Comparative Study ; Journal Article
Publication Status: epublish
Abstract
"Metabolic Equivalent" (MET) represents a standard amount of oxygen consumed by the body under resting conditions, and is defined as 3.5 mL O₂/kg × min or ~1 kcal/kg × h. It is used to express the energy cost of physical activity in multiples of MET. However, universal application of the 1-MET standard was questioned in previous studies, because it does not apply well to all individuals. Height, weight and resting metabolic rate (RMR, measured by indirect calorimetry) were measured in adolescent males (n = 50) and females (n = 50), women during pregnancy (gestation week 35-41, n = 46), women 24-53 weeks postpartum (n = 27), and active men (n = 30), and were compared to values predicted by the 1-MET standard. The RMR of adolescent males (1.28 kcal/kg × h) was significantly higher than that of adolescent females (1.11 kcal/kg × h), with or without the effects of puberty stage and physical activity levels. The RMR of the pregnant and post-pregnant subjects were not significantly different. The RMR of the active normal weight (0.92 kcal/kg × h) and overweight (0.89 kcal/kg × h) adult males were significantly lower than the 1-MET value. It follows that the 1-MET standard is inadequate for use not only in adult men and women, but also in adolescents and physically active men. It is therefore recommended that practitioners estimate RMR with equations taking into account individual characteristics, such as sex, age and Body Mass Index, and not rely on the 1-MET standard.

Keywords
Adolescent, Adult, Aging, Basal Metabolism, Body Mass Index, Child, Energy Metabolism, Exercise, Female, Humans, Lactation/metabolism, Male, Overweight/metabolism, Oxygen Consumption, Postpartum Period, Pregnancy/metabolism, Pregnancy Trimester, Third, Reproducibility of Results, Sex Characteristics, Switzerland, Thinness/metabolism, Young Adult
Pubmed
Open Access
Yes
Create date
30/07/2016 11:45
Last modification date
20/08/2019 13:54
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