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Strength Asymmetries Are Muscle-Specific and Metric-Dependent

We investigated if dominance affected upper limbs muscle function, and we calculated the level of agreement in asymmetry direction across various muscle-function metrics of two heterologous muscle groups. We recorded elbow flexors and extensors isometric strength of the dominant and non-dominant lim...

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Autores principales: Boccia, Gennaro, D’Emanuele, Samuel, Brustio, Paolo Riccardo, Beratto, Luca, Tarperi, Cantor, Casale, Roberto, Sciarra, Tommaso, Rainoldi, Alberto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319678/
https://www.ncbi.nlm.nih.gov/pubmed/35886350
http://dx.doi.org/10.3390/ijerph19148495
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author Boccia, Gennaro
D’Emanuele, Samuel
Brustio, Paolo Riccardo
Beratto, Luca
Tarperi, Cantor
Casale, Roberto
Sciarra, Tommaso
Rainoldi, Alberto
author_facet Boccia, Gennaro
D’Emanuele, Samuel
Brustio, Paolo Riccardo
Beratto, Luca
Tarperi, Cantor
Casale, Roberto
Sciarra, Tommaso
Rainoldi, Alberto
author_sort Boccia, Gennaro
collection PubMed
description We investigated if dominance affected upper limbs muscle function, and we calculated the level of agreement in asymmetry direction across various muscle-function metrics of two heterologous muscle groups. We recorded elbow flexors and extensors isometric strength of the dominant and non-dominant limb of 55 healthy adults. Participants performed a series of explosive contractions of maximal and submaximal amplitudes to record three metrics of muscle performance: maximal voluntary force (MVF), rate of force development (RFDpeak), and RFD-Scaling Factor (RFD-SF). At the population level, the MVF was the only muscle function that showed a difference between the dominant and non-dominant sides, being on average slightly (3–6%) higher on the non-dominant side. At the individual level, the direction agreement among heterologous muscles was poor for all metrics (Kappa values ≤ 0.15). When considering the homologous muscles, the direction agreement was moderate between MVF and RFDpeak (Kappa = 0.37) and low between MVF and RFD-SF (Kappa = 0.01). The asymmetries are muscle-specific and rarely favour the same side across different muscle-performance metrics. At the individual level, no one side is more performative than the other: each limb is favoured depending on muscle group and performance metric. The present findings can be used by practitioners that want to decrease the asymmetry levels as they should prescribe specific exercise training for each muscle.
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spelling pubmed-93196782022-07-27 Strength Asymmetries Are Muscle-Specific and Metric-Dependent Boccia, Gennaro D’Emanuele, Samuel Brustio, Paolo Riccardo Beratto, Luca Tarperi, Cantor Casale, Roberto Sciarra, Tommaso Rainoldi, Alberto Int J Environ Res Public Health Article We investigated if dominance affected upper limbs muscle function, and we calculated the level of agreement in asymmetry direction across various muscle-function metrics of two heterologous muscle groups. We recorded elbow flexors and extensors isometric strength of the dominant and non-dominant limb of 55 healthy adults. Participants performed a series of explosive contractions of maximal and submaximal amplitudes to record three metrics of muscle performance: maximal voluntary force (MVF), rate of force development (RFDpeak), and RFD-Scaling Factor (RFD-SF). At the population level, the MVF was the only muscle function that showed a difference between the dominant and non-dominant sides, being on average slightly (3–6%) higher on the non-dominant side. At the individual level, the direction agreement among heterologous muscles was poor for all metrics (Kappa values ≤ 0.15). When considering the homologous muscles, the direction agreement was moderate between MVF and RFDpeak (Kappa = 0.37) and low between MVF and RFD-SF (Kappa = 0.01). The asymmetries are muscle-specific and rarely favour the same side across different muscle-performance metrics. At the individual level, no one side is more performative than the other: each limb is favoured depending on muscle group and performance metric. The present findings can be used by practitioners that want to decrease the asymmetry levels as they should prescribe specific exercise training for each muscle. MDPI 2022-07-12 /pmc/articles/PMC9319678/ /pubmed/35886350 http://dx.doi.org/10.3390/ijerph19148495 Text en © 2022 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
Boccia, Gennaro
D’Emanuele, Samuel
Brustio, Paolo Riccardo
Beratto, Luca
Tarperi, Cantor
Casale, Roberto
Sciarra, Tommaso
Rainoldi, Alberto
Strength Asymmetries Are Muscle-Specific and Metric-Dependent
title Strength Asymmetries Are Muscle-Specific and Metric-Dependent
title_full Strength Asymmetries Are Muscle-Specific and Metric-Dependent
title_fullStr Strength Asymmetries Are Muscle-Specific and Metric-Dependent
title_full_unstemmed Strength Asymmetries Are Muscle-Specific and Metric-Dependent
title_short Strength Asymmetries Are Muscle-Specific and Metric-Dependent
title_sort strength asymmetries are muscle-specific and metric-dependent
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319678/
https://www.ncbi.nlm.nih.gov/pubmed/35886350
http://dx.doi.org/10.3390/ijerph19148495
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