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Corticospinal Excitability to the Biceps Brachii is Not Different When Arm Cycling at a Self-Selected or Fixed Cadence

Background: The present study compared corticospinal excitability to the biceps brachii muscle during arm cycling at a self-selected and a fixed cadence (SSC and FC, respectively). We hypothesized that corticospinal excitability would not be different between the two conditions. Methods: The SSC was...

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Autores principales: Lockyer, Evan J., Nippard, Anna P., Kean, Kaitlyn, Hollohan, Nicole, Button, Duane C., Power, Kevin E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6406314/
https://www.ncbi.nlm.nih.gov/pubmed/30769825
http://dx.doi.org/10.3390/brainsci9020041
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author Lockyer, Evan J.
Nippard, Anna P.
Kean, Kaitlyn
Hollohan, Nicole
Button, Duane C.
Power, Kevin E.
author_facet Lockyer, Evan J.
Nippard, Anna P.
Kean, Kaitlyn
Hollohan, Nicole
Button, Duane C.
Power, Kevin E.
author_sort Lockyer, Evan J.
collection PubMed
description Background: The present study compared corticospinal excitability to the biceps brachii muscle during arm cycling at a self-selected and a fixed cadence (SSC and FC, respectively). We hypothesized that corticospinal excitability would not be different between the two conditions. Methods: The SSC was initially performed and the cycling cadence was recorded every 5 s for one minute. The average cadence of the SSC cycling trial was then used as a target for the FC of cycling that the participants were instructed to maintain. The motor evoked potentials (MEPs) elicited via transcranial magnetic stimulation (TMS) of the motor cortex were recorded from the biceps brachii during each trial of SSC and FC arm cycling. Results: Corticospinal excitability, as assessed via normalized MEP amplitudes (MEPs were made relative to a maximal compound muscle action potential), was not different between groups. Conclusions: Focusing on maintaining a fixed cadence during arm cycling does not influence corticospinal excitability, as assessed via TMS-evoked MEPs.
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spelling pubmed-64063142019-03-13 Corticospinal Excitability to the Biceps Brachii is Not Different When Arm Cycling at a Self-Selected or Fixed Cadence Lockyer, Evan J. Nippard, Anna P. Kean, Kaitlyn Hollohan, Nicole Button, Duane C. Power, Kevin E. Brain Sci Article Background: The present study compared corticospinal excitability to the biceps brachii muscle during arm cycling at a self-selected and a fixed cadence (SSC and FC, respectively). We hypothesized that corticospinal excitability would not be different between the two conditions. Methods: The SSC was initially performed and the cycling cadence was recorded every 5 s for one minute. The average cadence of the SSC cycling trial was then used as a target for the FC of cycling that the participants were instructed to maintain. The motor evoked potentials (MEPs) elicited via transcranial magnetic stimulation (TMS) of the motor cortex were recorded from the biceps brachii during each trial of SSC and FC arm cycling. Results: Corticospinal excitability, as assessed via normalized MEP amplitudes (MEPs were made relative to a maximal compound muscle action potential), was not different between groups. Conclusions: Focusing on maintaining a fixed cadence during arm cycling does not influence corticospinal excitability, as assessed via TMS-evoked MEPs. MDPI 2019-02-14 /pmc/articles/PMC6406314/ /pubmed/30769825 http://dx.doi.org/10.3390/brainsci9020041 Text en © 2019 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lockyer, Evan J.
Nippard, Anna P.
Kean, Kaitlyn
Hollohan, Nicole
Button, Duane C.
Power, Kevin E.
Corticospinal Excitability to the Biceps Brachii is Not Different When Arm Cycling at a Self-Selected or Fixed Cadence
title Corticospinal Excitability to the Biceps Brachii is Not Different When Arm Cycling at a Self-Selected or Fixed Cadence
title_full Corticospinal Excitability to the Biceps Brachii is Not Different When Arm Cycling at a Self-Selected or Fixed Cadence
title_fullStr Corticospinal Excitability to the Biceps Brachii is Not Different When Arm Cycling at a Self-Selected or Fixed Cadence
title_full_unstemmed Corticospinal Excitability to the Biceps Brachii is Not Different When Arm Cycling at a Self-Selected or Fixed Cadence
title_short Corticospinal Excitability to the Biceps Brachii is Not Different When Arm Cycling at a Self-Selected or Fixed Cadence
title_sort corticospinal excitability to the biceps brachii is not different when arm cycling at a self-selected or fixed cadence
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6406314/
https://www.ncbi.nlm.nih.gov/pubmed/30769825
http://dx.doi.org/10.3390/brainsci9020041
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