Relationship between physical activity time and intramuscular adipose tissue content of the thigh muscle groups of younger and older men

Abstract We investigated the effect of physical activity on muscle tissue size and intramuscular adipose tissue (IntraMAT) content in the thigh muscle groups of younger and older men. Twenty younger and 20 older men participated in this study. The muscle tissue cross-sectional area (CSA) and the Int...

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Autores principales:	Madoka Ogawa, Noriko Tanaka, Akito Yoshiko, Yoshiharu Oshida, Teruhiko Koike, Hiroshi Akima
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/68c0455503724a7592b9ded6d31f8c3d
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spelling	oai:doaj.org-article:68c0455503724a7592b9ded6d31f8c3d2021-12-02T18:01:52ZRelationship between physical activity time and intramuscular adipose tissue content of the thigh muscle groups of younger and older men10.1038/s41598-021-99126-x2045-2322https://doaj.org/article/68c0455503724a7592b9ded6d31f8c3d2021-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-99126-xhttps://doaj.org/toc/2045-2322Abstract We investigated the effect of physical activity on muscle tissue size and intramuscular adipose tissue (IntraMAT) content in the thigh muscle groups of younger and older men. Twenty younger and 20 older men participated in this study. The muscle tissue cross-sectional area (CSA) and the IntraMAT content in the quadriceps femoris (QF), hamstrings (HM), hip adductors (AD), and mid-thigh total were measured using magnetic resonance imaging. The physical activity time was measured using a triaxial accelerometer, and four levels of physical activity were determined depending on the metabolic equivalent of task (METs), including sedentary (≤ 1.5 METs), light intensity (≤ 2.9 METs), moderate intensity (3.0–5.9 METs), and vigorous intensity (≥ 6.0 METs). No significant correlation was observed between the physical activity parameters and muscle tissue CSA in both groups. The IntraMAT content of the three muscle groups (QF, AD, and HM) and the total thigh was inversely correlated with the time of moderate-intensity physical activity (r s = − 0.625 to − 0.489, P < 0.05, for all comparisons) in the young group, but not in the older group. These results indicate that IntraMAT accumulation was associated with the amount of moderate-physical activity in younger men.Madoka OgawaNoriko TanakaAkito YoshikoYoshiharu OshidaTeruhiko KoikeHiroshi AkimaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Madoka Ogawa Noriko Tanaka Akito Yoshiko Yoshiharu Oshida Teruhiko Koike Hiroshi Akima Relationship between physical activity time and intramuscular adipose tissue content of the thigh muscle groups of younger and older men
description	Abstract We investigated the effect of physical activity on muscle tissue size and intramuscular adipose tissue (IntraMAT) content in the thigh muscle groups of younger and older men. Twenty younger and 20 older men participated in this study. The muscle tissue cross-sectional area (CSA) and the IntraMAT content in the quadriceps femoris (QF), hamstrings (HM), hip adductors (AD), and mid-thigh total were measured using magnetic resonance imaging. The physical activity time was measured using a triaxial accelerometer, and four levels of physical activity were determined depending on the metabolic equivalent of task (METs), including sedentary (≤ 1.5 METs), light intensity (≤ 2.9 METs), moderate intensity (3.0–5.9 METs), and vigorous intensity (≥ 6.0 METs). No significant correlation was observed between the physical activity parameters and muscle tissue CSA in both groups. The IntraMAT content of the three muscle groups (QF, AD, and HM) and the total thigh was inversely correlated with the time of moderate-intensity physical activity (r s = − 0.625 to − 0.489, P < 0.05, for all comparisons) in the young group, but not in the older group. These results indicate that IntraMAT accumulation was associated with the amount of moderate-physical activity in younger men.
format	article
author	Madoka Ogawa Noriko Tanaka Akito Yoshiko Yoshiharu Oshida Teruhiko Koike Hiroshi Akima
author_facet	Madoka Ogawa Noriko Tanaka Akito Yoshiko Yoshiharu Oshida Teruhiko Koike Hiroshi Akima
author_sort	Madoka Ogawa
title	Relationship between physical activity time and intramuscular adipose tissue content of the thigh muscle groups of younger and older men
title_short	Relationship between physical activity time and intramuscular adipose tissue content of the thigh muscle groups of younger and older men
title_full	Relationship between physical activity time and intramuscular adipose tissue content of the thigh muscle groups of younger and older men
title_fullStr	Relationship between physical activity time and intramuscular adipose tissue content of the thigh muscle groups of younger and older men
title_full_unstemmed	Relationship between physical activity time and intramuscular adipose tissue content of the thigh muscle groups of younger and older men
title_sort	relationship between physical activity time and intramuscular adipose tissue content of the thigh muscle groups of younger and older men
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/68c0455503724a7592b9ded6d31f8c3d
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Relationship between physical activity time and intramuscular adipose tissue content of the thigh muscle groups of younger and older men

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