Factors of Muscle Quality and Determinants of Muscle Strength: A Systematic Literature Review

Muscle quality defined as the ratio of muscle strength to muscle mass disregards underlying factors which influence muscle strength. The aim of this review was to investigate the relationship of phase angle (PhA), echo intensity (EI), muscular adipose tissue (MAT), muscle fiber type, fascicle pennat...

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Main Authors: Luciano Bruno Kuschel, Dominik Sonnenburg, Tilman Engel
Format: Article
Language:English
Published: MDPI AG 2022-10-01
Series:Healthcare
Subjects:
Online Access:https://www.mdpi.com/2227-9032/10/10/1937
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author Luciano Bruno Kuschel
Dominik Sonnenburg
Tilman Engel
author_facet Luciano Bruno Kuschel
Dominik Sonnenburg
Tilman Engel
author_sort Luciano Bruno Kuschel
collection DOAJ
description Muscle quality defined as the ratio of muscle strength to muscle mass disregards underlying factors which influence muscle strength. The aim of this review was to investigate the relationship of phase angle (PhA), echo intensity (EI), muscular adipose tissue (MAT), muscle fiber type, fascicle pennation angle (θf), fascicle length (lf), muscle oxidative capacity, insulin sensitivity (IS), neuromuscular activation, and motor unit to muscle strength. PubMed search was performed in 2021. The inclusion criteria were: (i) original research, (ii) human participants, (iii) adults (≥18 years). Exclusion criteria were: (i) no full-text, (ii) non-English or -German language, (iii) pathologies. Forty-one studies were identified. Nine studies found a weak–moderate negative (range r: [−0.26]–[−0.656], <i>p</i> < 0.05) correlation between muscle strength and EI. Four studies found a weak–moderate positive correlation (range r: 0.177–0.696, <i>p</i> < 0.05) between muscle strength and PhA. Two studies found a moderate-strong negative correlation (range r: [−0.446]–[−0.87], <i>p</i> < 0.05) between muscle strength and MAT. Two studies found a weak-strong positive correlation (range r: 0.28–0.907, <i>p</i> < 0.05) between θf and muscle strength. Muscle oxidative capacity was found to be a predictor of muscle strength. This review highlights that the current definition of muscle quality should be expanded upon as to encompass all possible factors of muscle quality.
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spelling doaj.art-bccecd7ab2434a84ba27e95cd986a5df2023-12-03T14:46:02ZengMDPI AGHealthcare2227-90322022-10-011010193710.3390/healthcare10101937Factors of Muscle Quality and Determinants of Muscle Strength: A Systematic Literature ReviewLuciano Bruno Kuschel0Dominik Sonnenburg1Tilman Engel2Department of Sports Medicine and Sports Orthopedics, University Outpatient Clinic, University of Potsdam, 14469 Potsdam, GermanyDepartment of Sports Medicine and Sports Orthopedics, University Outpatient Clinic, University of Potsdam, 14469 Potsdam, GermanyDepartment of Sports Medicine and Sports Orthopedics, University Outpatient Clinic, University of Potsdam, 14469 Potsdam, GermanyMuscle quality defined as the ratio of muscle strength to muscle mass disregards underlying factors which influence muscle strength. The aim of this review was to investigate the relationship of phase angle (PhA), echo intensity (EI), muscular adipose tissue (MAT), muscle fiber type, fascicle pennation angle (θf), fascicle length (lf), muscle oxidative capacity, insulin sensitivity (IS), neuromuscular activation, and motor unit to muscle strength. PubMed search was performed in 2021. The inclusion criteria were: (i) original research, (ii) human participants, (iii) adults (≥18 years). Exclusion criteria were: (i) no full-text, (ii) non-English or -German language, (iii) pathologies. Forty-one studies were identified. Nine studies found a weak–moderate negative (range r: [−0.26]–[−0.656], <i>p</i> < 0.05) correlation between muscle strength and EI. Four studies found a weak–moderate positive correlation (range r: 0.177–0.696, <i>p</i> < 0.05) between muscle strength and PhA. Two studies found a moderate-strong negative correlation (range r: [−0.446]–[−0.87], <i>p</i> < 0.05) between muscle strength and MAT. Two studies found a weak-strong positive correlation (range r: 0.28–0.907, <i>p</i> < 0.05) between θf and muscle strength. Muscle oxidative capacity was found to be a predictor of muscle strength. This review highlights that the current definition of muscle quality should be expanded upon as to encompass all possible factors of muscle quality.https://www.mdpi.com/2227-9032/10/10/1937muscle qualitymuscle strengthphase angleecho intensity
spellingShingle Luciano Bruno Kuschel
Dominik Sonnenburg
Tilman Engel
Factors of Muscle Quality and Determinants of Muscle Strength: A Systematic Literature Review
Healthcare
muscle quality
muscle strength
phase angle
echo intensity
title Factors of Muscle Quality and Determinants of Muscle Strength: A Systematic Literature Review
title_full Factors of Muscle Quality and Determinants of Muscle Strength: A Systematic Literature Review
title_fullStr Factors of Muscle Quality and Determinants of Muscle Strength: A Systematic Literature Review
title_full_unstemmed Factors of Muscle Quality and Determinants of Muscle Strength: A Systematic Literature Review
title_short Factors of Muscle Quality and Determinants of Muscle Strength: A Systematic Literature Review
title_sort factors of muscle quality and determinants of muscle strength a systematic literature review
topic muscle quality
muscle strength
phase angle
echo intensity
url https://www.mdpi.com/2227-9032/10/10/1937
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AT dominiksonnenburg factorsofmusclequalityanddeterminantsofmusclestrengthasystematicliteraturereview
AT tilmanengel factorsofmusclequalityanddeterminantsofmusclestrengthasystematicliteraturereview