Intramuscular fat in gluteus maximus for different levels of physical activity

Abstract We aimed to determine if gluteus maximus (GMAX) fat infiltration is associated with different levels of physical activity. Identifying and quantifying differences in the intramuscular fat content of GMAX in subjects with different levels of physical activity can provide a new tool to evalua...

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Autores principales:	Martin A. Belzunce, Johann Henckel, Anna Di Laura, Alister Hart
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9d37e6271a90466fa5fa4076f452695e
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spelling	oai:doaj.org-article:9d37e6271a90466fa5fa4076f452695e2021-11-08T10:48:57ZIntramuscular fat in gluteus maximus for different levels of physical activity10.1038/s41598-021-00790-w2045-2322https://doaj.org/article/9d37e6271a90466fa5fa4076f452695e2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-00790-whttps://doaj.org/toc/2045-2322Abstract We aimed to determine if gluteus maximus (GMAX) fat infiltration is associated with different levels of physical activity. Identifying and quantifying differences in the intramuscular fat content of GMAX in subjects with different levels of physical activity can provide a new tool to evaluate hip muscles health. This was a cross-sectional study involving seventy subjects that underwent Dixon MRI of the pelvis. The individuals were divided into four groups by levels of physical activity, from low to high: inactive patients due to hip pain; and low, medium and high physical activity groups of healthy subjects (HS) based on hours of exercise per week. We estimated the GMAX intramuscular fat content for each subject using automated measurements of fat fraction (FF) from Dixon images. The GMAX volume and lean volume were also measured and normalized by lean body mass. The effects of body mass index (BMI) and age were included in the statistical analysis. The patient group had a significantly higher FF than the three groups of HS (median values of 26.2%, 17.8%, 16.7% and 13.7% respectively, p < 0.001). The normalized lean volume was significantly larger in the high activity group compared to all the other groups (p < 0.001, p = 0.002 and p = 0.02). Employing a hierarchical linear regression analysis, we found that hip pain, low physical activity, female gender and high BMI were statistically significant predictors of increased GMAX fat infiltration.Martin A. BelzunceJohann HenckelAnna Di LauraAlister HartNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Martin A. Belzunce Johann Henckel Anna Di Laura Alister Hart Intramuscular fat in gluteus maximus for different levels of physical activity
description	Abstract We aimed to determine if gluteus maximus (GMAX) fat infiltration is associated with different levels of physical activity. Identifying and quantifying differences in the intramuscular fat content of GMAX in subjects with different levels of physical activity can provide a new tool to evaluate hip muscles health. This was a cross-sectional study involving seventy subjects that underwent Dixon MRI of the pelvis. The individuals were divided into four groups by levels of physical activity, from low to high: inactive patients due to hip pain; and low, medium and high physical activity groups of healthy subjects (HS) based on hours of exercise per week. We estimated the GMAX intramuscular fat content for each subject using automated measurements of fat fraction (FF) from Dixon images. The GMAX volume and lean volume were also measured and normalized by lean body mass. The effects of body mass index (BMI) and age were included in the statistical analysis. The patient group had a significantly higher FF than the three groups of HS (median values of 26.2%, 17.8%, 16.7% and 13.7% respectively, p < 0.001). The normalized lean volume was significantly larger in the high activity group compared to all the other groups (p < 0.001, p = 0.002 and p = 0.02). Employing a hierarchical linear regression analysis, we found that hip pain, low physical activity, female gender and high BMI were statistically significant predictors of increased GMAX fat infiltration.
format	article
author	Martin A. Belzunce Johann Henckel Anna Di Laura Alister Hart
author_facet	Martin A. Belzunce Johann Henckel Anna Di Laura Alister Hart
author_sort	Martin A. Belzunce
title	Intramuscular fat in gluteus maximus for different levels of physical activity
title_short	Intramuscular fat in gluteus maximus for different levels of physical activity
title_full	Intramuscular fat in gluteus maximus for different levels of physical activity
title_fullStr	Intramuscular fat in gluteus maximus for different levels of physical activity
title_full_unstemmed	Intramuscular fat in gluteus maximus for different levels of physical activity
title_sort	intramuscular fat in gluteus maximus for different levels of physical activity
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9d37e6271a90466fa5fa4076f452695e
work_keys_str_mv	AT martinabelzunce intramuscularfatingluteusmaximusfordifferentlevelsofphysicalactivity AT johannhenckel intramuscularfatingluteusmaximusfordifferentlevelsofphysicalactivity AT annadilaura intramuscularfatingluteusmaximusfordifferentlevelsofphysicalactivity AT alisterhart intramuscularfatingluteusmaximusfordifferentlevelsofphysicalactivity
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Intramuscular fat in gluteus maximus for different levels of physical activity

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