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dc.contributor.authorMason, Joel
dc.contributor.authorFrazer, Ashlyn K.
dc.contributor.authorHorvath, Deanna M.
dc.contributor.authorPearce, Alan J.
dc.contributor.authorAvela, Janne
dc.contributor.authorHowatson, Glyn
dc.contributor.authorKidgell, Dawson J.
dc.date.accessioned2018-01-17T10:28:51Z
dc.date.available2018-01-17T10:28:51Z
dc.date.issued2018
dc.identifier.citationMason, J., Frazer, A. K., Horvath, D. M., Pearce, A. J., Avela, J., Howatson, G., & Kidgell, D. J. (2018). Ipsilateral corticomotor responses are confined to the homologous muscle following cross-education of muscular strength. <em>Applied Physiology, Nutrition and Metabolism</em>, 43 (1), 11-22. <a href="https://doi.org/10.1139/apnm-2017-0457">doi:10.1139/apnm-2017-0457</a>
dc.identifier.otherTUTKAID_74750
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/56767
dc.description.abstractCross-education of strength occurs when strength-training 1 limb increases the strength of the untrained limb and is restricted to the untrained homologous muscle. Cortical circuits located ipsilateral to the trained limb might be involved. We used transcranial magnetic stimulation (TMS) to determine the corticomotor responses from the untrained homologous (biceps brachii) and nonhomologous (flexor carpi radialis) muscle following strength-training of the right elbow flexors. Motor evoked potentials were recorded from the untrained left biceps brachii and flexor carpi radialis during a submaximal contraction from 20 individuals (10 women, 10 men; aged 18–35 years; training group, n = 10; control group, n = 10) before and after 3 weeks of strength-training the right biceps brachii at 80% of 1-repetition maximum. Recruitment-curves for corticomotor excitability and inhibition of the untrained homologous and nonhomologous muscle were constructed and assessed by examining the area under the recruitment curve. Strength-training increased strength of the trained elbow flexors (29%), resulting in an 18% increase in contralateral strength of the untrained elbow flexors (P < 0.0001). The trained wrist flexors increased by 19%, resulting in a 12% increase in strength of the untrained wrist flexors (P = 0.005). TMS showed increased corticomotor excitability and decreased corticomotor inhibition for the untrained homologous muscle (P < 0.05); however, there were no changes in the untrained nonhomologous muscle (P > 0.05). These findings show that the cross-education of muscular strength is spatially distributed; however, the neural adaptations are confined to the motor pathway ipsilateral to the untrained homologous agonist.
dc.language.isoeng
dc.publisherNational Research Council Canada
dc.relation.ispartofseriesApplied Physiology, Nutrition and Metabolism
dc.subject.otheragonist
dc.subject.otherexcitability
dc.subject.otherinhibitions
dc.subject.othersynergist
dc.subject.othercross-activation
dc.subject.othermuscle strength
dc.subject.otherextremities
dc.subject.othermuscle fitness
dc.titleIpsilateral corticomotor responses are confined to the homologous muscle following cross-education of muscular strength
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201801151207
dc.contributor.laitosLiikuntatieteellinen tiedekuntafi
dc.contributor.laitosFaculty of Sport and Health Sciencesen
dc.contributor.oppiaineBiomekaniikka
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2018-01-15T16:51:47Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.format.pagerange11-22
dc.relation.issn1715-5312
dc.relation.volume43
dc.type.versionacceptedVersion
dc.rights.copyright© the Authors, 2018. This is a final draft version of an article whose final and definitive form has been published by National Research Council Canada. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.relation.doi10.1139/apnm-2017-0457


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