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Prediction of muscular architecture of the rectus femoris and vastus lateralis from EMG during isometric contractions in soccer players

OBJECTIVES: The purpose of the study was to establish regression equations that could be used to predict muscle thickness and pennation angle at different intensities from electromyography (EMG) based measures of muscle activation during isometric contractions. DESIGN: Cross-sectional study. METHODS...

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Autores principales: Chauhan, Bhawesh, Hamzeh, Maher A, Cuesta-Vargas, Antonio I
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3806983/
https://www.ncbi.nlm.nih.gov/pubmed/24171156
http://dx.doi.org/10.1186/2193-1801-2-548
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author Chauhan, Bhawesh
Hamzeh, Maher A
Cuesta-Vargas, Antonio I
author_facet Chauhan, Bhawesh
Hamzeh, Maher A
Cuesta-Vargas, Antonio I
author_sort Chauhan, Bhawesh
collection PubMed
description OBJECTIVES: The purpose of the study was to establish regression equations that could be used to predict muscle thickness and pennation angle at different intensities from electromyography (EMG) based measures of muscle activation during isometric contractions. DESIGN: Cross-sectional study. METHODS: Simultaneous ultrasonography and EMG were used to measure pennation angle, muscle thickness and muscle activity of the rectus femoris and vastus lateralis muscles, respectively, during graded isometric knee extension contractions performed on a Cybex dynamometer. Data form fifteen male soccer players were collected in increments of approximately 25% intensity of the maximum voluntary contraction (MVC) ranging from rest to MVC. RESULTS: There was a significant correlation (P < 0.05) between ultrasound predictors and EMG measures for the muscle thickness of rectus femoris with an R(2) value of 0.68. There was no significant correlation (P > 0.05) between ultrasound pennation angle for the vastus lateralis predictors for EMG muscle activity with an R(2) value of 0.40. CONCLUSIONS: The regression equations can be used to characterise muscle thickness more accurately and to determine how it changes with contraction intensity, this provides improved estimates of muscle force when using musculoskeletal models.
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spelling pubmed-38069832013-10-29 Prediction of muscular architecture of the rectus femoris and vastus lateralis from EMG during isometric contractions in soccer players Chauhan, Bhawesh Hamzeh, Maher A Cuesta-Vargas, Antonio I Springerplus Research OBJECTIVES: The purpose of the study was to establish regression equations that could be used to predict muscle thickness and pennation angle at different intensities from electromyography (EMG) based measures of muscle activation during isometric contractions. DESIGN: Cross-sectional study. METHODS: Simultaneous ultrasonography and EMG were used to measure pennation angle, muscle thickness and muscle activity of the rectus femoris and vastus lateralis muscles, respectively, during graded isometric knee extension contractions performed on a Cybex dynamometer. Data form fifteen male soccer players were collected in increments of approximately 25% intensity of the maximum voluntary contraction (MVC) ranging from rest to MVC. RESULTS: There was a significant correlation (P < 0.05) between ultrasound predictors and EMG measures for the muscle thickness of rectus femoris with an R(2) value of 0.68. There was no significant correlation (P > 0.05) between ultrasound pennation angle for the vastus lateralis predictors for EMG muscle activity with an R(2) value of 0.40. CONCLUSIONS: The regression equations can be used to characterise muscle thickness more accurately and to determine how it changes with contraction intensity, this provides improved estimates of muscle force when using musculoskeletal models. Springer International Publishing 2013-10-18 /pmc/articles/PMC3806983/ /pubmed/24171156 http://dx.doi.org/10.1186/2193-1801-2-548 Text en © Chauhan et al.; licensee Springer. 2013 This article is published under license to BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Chauhan, Bhawesh
Hamzeh, Maher A
Cuesta-Vargas, Antonio I
Prediction of muscular architecture of the rectus femoris and vastus lateralis from EMG during isometric contractions in soccer players
title Prediction of muscular architecture of the rectus femoris and vastus lateralis from EMG during isometric contractions in soccer players
title_full Prediction of muscular architecture of the rectus femoris and vastus lateralis from EMG during isometric contractions in soccer players
title_fullStr Prediction of muscular architecture of the rectus femoris and vastus lateralis from EMG during isometric contractions in soccer players
title_full_unstemmed Prediction of muscular architecture of the rectus femoris and vastus lateralis from EMG during isometric contractions in soccer players
title_short Prediction of muscular architecture of the rectus femoris and vastus lateralis from EMG during isometric contractions in soccer players
title_sort prediction of muscular architecture of the rectus femoris and vastus lateralis from emg during isometric contractions in soccer players
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3806983/
https://www.ncbi.nlm.nih.gov/pubmed/24171156
http://dx.doi.org/10.1186/2193-1801-2-548
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