Cargando…
Metabolic Equivalent in Adolescents, Active Adults and Pregnant Women
“Metabolic Equivalent” (MET) represents a standard amount of oxygen consumed by the body under resting conditions, and is defined as 3.5 mL O(2)/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 sta...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4963914/ https://www.ncbi.nlm.nih.gov/pubmed/27447667 http://dx.doi.org/10.3390/nu8070438 |
_version_ | 1782445006495154176 |
---|---|
author | Melzer, Katarina Heydenreich, Juliane Schutz, Yves Renaud, Anne Kayser, Bengt Mäder, Urs |
author_facet | Melzer, Katarina Heydenreich, Juliane Schutz, Yves Renaud, Anne Kayser, Bengt Mäder, Urs |
author_sort | Melzer, Katarina |
collection | PubMed |
description | “Metabolic Equivalent” (MET) represents a standard amount of oxygen consumed by the body under resting conditions, and is defined as 3.5 mL O(2)/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. |
format | Online Article Text |
id | pubmed-4963914 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-49639142016-08-03 Metabolic Equivalent in Adolescents, Active Adults and Pregnant Women Melzer, Katarina Heydenreich, Juliane Schutz, Yves Renaud, Anne Kayser, Bengt Mäder, Urs Nutrients Article “Metabolic Equivalent” (MET) represents a standard amount of oxygen consumed by the body under resting conditions, and is defined as 3.5 mL O(2)/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. MDPI 2016-07-20 /pmc/articles/PMC4963914/ /pubmed/27447667 http://dx.doi.org/10.3390/nu8070438 Text en © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Melzer, Katarina Heydenreich, Juliane Schutz, Yves Renaud, Anne Kayser, Bengt Mäder, Urs Metabolic Equivalent in Adolescents, Active Adults and Pregnant Women |
title | Metabolic Equivalent in Adolescents, Active Adults and Pregnant Women |
title_full | Metabolic Equivalent in Adolescents, Active Adults and Pregnant Women |
title_fullStr | Metabolic Equivalent in Adolescents, Active Adults and Pregnant Women |
title_full_unstemmed | Metabolic Equivalent in Adolescents, Active Adults and Pregnant Women |
title_short | Metabolic Equivalent in Adolescents, Active Adults and Pregnant Women |
title_sort | metabolic equivalent in adolescents, active adults and pregnant women |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4963914/ https://www.ncbi.nlm.nih.gov/pubmed/27447667 http://dx.doi.org/10.3390/nu8070438 |
work_keys_str_mv | AT melzerkatarina metabolicequivalentinadolescentsactiveadultsandpregnantwomen AT heydenreichjuliane metabolicequivalentinadolescentsactiveadultsandpregnantwomen AT schutzyves metabolicequivalentinadolescentsactiveadultsandpregnantwomen AT renaudanne metabolicequivalentinadolescentsactiveadultsandpregnantwomen AT kayserbengt metabolicequivalentinadolescentsactiveadultsandpregnantwomen AT maderurs metabolicequivalentinadolescentsactiveadultsandpregnantwomen |