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Weak Association between Vastus Lateralis Muscle Fiber Composition and Fascicle Length in Young Untrained Females

The aim of the study was to investigate the relationships between vastus lateralis muscle fiber length and fiber type composition in individuals with minimal exposure to systematic resistance/power training. In sixty female physical education students (age: 21.03 ± 2.1 years, body weight: 59.8 ± 9.7...

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Autores principales: Mpampoulis, Thomas, Methenitis, Spyridon, Papadopoulos, Constantinos, Papadimas, Giorgos, Spiliopoulou, Polyxeni, Stasinaki, Angeliki-Nikoletta, Bogdanis, Gregory C., Karampatsos, Giorgos, Terzis, Gerasimos
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
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Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146508/
https://www.ncbi.nlm.nih.gov/pubmed/33925196
http://dx.doi.org/10.3390/sports9050056
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author Mpampoulis, Thomas
Methenitis, Spyridon
Papadopoulos, Constantinos
Papadimas, Giorgos
Spiliopoulou, Polyxeni
Stasinaki, Angeliki-Nikoletta
Bogdanis, Gregory C.
Karampatsos, Giorgos
Terzis, Gerasimos
author_facet Mpampoulis, Thomas
Methenitis, Spyridon
Papadopoulos, Constantinos
Papadimas, Giorgos
Spiliopoulou, Polyxeni
Stasinaki, Angeliki-Nikoletta
Bogdanis, Gregory C.
Karampatsos, Giorgos
Terzis, Gerasimos
author_sort Mpampoulis, Thomas
collection PubMed
description The aim of the study was to investigate the relationships between vastus lateralis muscle fiber length and fiber type composition in individuals with minimal exposure to systematic resistance/power training. In sixty female physical education students (age: 21.03 ± 2.1 years, body weight: 59.8 ± 9.7 kg, body height: 166.2 ± 6.5 cm), with no experience in systematic training, lean body mass, VL muscle architecture and fiber composition type, countermovement jumping (CMJ) performance, and isometric leg press rate of force development were evaluated. Data were analyzed for all participants, as well as two equally numbered groups assigned according to their maximum countermovement jumping power (High-Power or Low-Power group). Significant but low correlations were found between type II muscle fiber percentage and fascicle length (N = 60, p < 0.05). Significant correlations were found between type IIa and IIx muscle fiber percentage cross-sectional area (%CSA) and fascicle length (N = 60; r = 0.321, and r = 0.378; respectively, p < 0.05). These correlations were higher for the High-Power group (r = 0.499, and r = 0.522; respectively, p < 0.05), and lower, and nonsignificant, for the Low-Power group. The best predictor of strength/power performance was the lean body mass of the lower extremities (r = 0.389–0.645, p < 0.05). These results suggest that in females with minimal exposure to systematic training, fascicle length may be weakly linked with type II fiber areas, only in females with high-power profiles.
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spelling pubmed-81465082021-05-26 Weak Association between Vastus Lateralis Muscle Fiber Composition and Fascicle Length in Young Untrained Females Mpampoulis, Thomas Methenitis, Spyridon Papadopoulos, Constantinos Papadimas, Giorgos Spiliopoulou, Polyxeni Stasinaki, Angeliki-Nikoletta Bogdanis, Gregory C. Karampatsos, Giorgos Terzis, Gerasimos Sports (Basel) Article The aim of the study was to investigate the relationships between vastus lateralis muscle fiber length and fiber type composition in individuals with minimal exposure to systematic resistance/power training. In sixty female physical education students (age: 21.03 ± 2.1 years, body weight: 59.8 ± 9.7 kg, body height: 166.2 ± 6.5 cm), with no experience in systematic training, lean body mass, VL muscle architecture and fiber composition type, countermovement jumping (CMJ) performance, and isometric leg press rate of force development were evaluated. Data were analyzed for all participants, as well as two equally numbered groups assigned according to their maximum countermovement jumping power (High-Power or Low-Power group). Significant but low correlations were found between type II muscle fiber percentage and fascicle length (N = 60, p < 0.05). Significant correlations were found between type IIa and IIx muscle fiber percentage cross-sectional area (%CSA) and fascicle length (N = 60; r = 0.321, and r = 0.378; respectively, p < 0.05). These correlations were higher for the High-Power group (r = 0.499, and r = 0.522; respectively, p < 0.05), and lower, and nonsignificant, for the Low-Power group. The best predictor of strength/power performance was the lean body mass of the lower extremities (r = 0.389–0.645, p < 0.05). These results suggest that in females with minimal exposure to systematic training, fascicle length may be weakly linked with type II fiber areas, only in females with high-power profiles. MDPI 2021-04-28 /pmc/articles/PMC8146508/ /pubmed/33925196 http://dx.doi.org/10.3390/sports9050056 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mpampoulis, Thomas
Methenitis, Spyridon
Papadopoulos, Constantinos
Papadimas, Giorgos
Spiliopoulou, Polyxeni
Stasinaki, Angeliki-Nikoletta
Bogdanis, Gregory C.
Karampatsos, Giorgos
Terzis, Gerasimos
Weak Association between Vastus Lateralis Muscle Fiber Composition and Fascicle Length in Young Untrained Females
title Weak Association between Vastus Lateralis Muscle Fiber Composition and Fascicle Length in Young Untrained Females
title_full Weak Association between Vastus Lateralis Muscle Fiber Composition and Fascicle Length in Young Untrained Females
title_fullStr Weak Association between Vastus Lateralis Muscle Fiber Composition and Fascicle Length in Young Untrained Females
title_full_unstemmed Weak Association between Vastus Lateralis Muscle Fiber Composition and Fascicle Length in Young Untrained Females
title_short Weak Association between Vastus Lateralis Muscle Fiber Composition and Fascicle Length in Young Untrained Females
title_sort weak association between vastus lateralis muscle fiber composition and fascicle length in young untrained females
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146508/
https://www.ncbi.nlm.nih.gov/pubmed/33925196
http://dx.doi.org/10.3390/sports9050056
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