Effects of a single habituation session on neuromuscular isokinetic profile at different movement velocities

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dc.contributor.authorOliveira, Anderson Souza [UNESP]
dc.contributor.authorCorvino, Rogerio Bulhoes [UNESP]
dc.contributor.authorGoncalves, Mauro [UNESP]
dc.contributor.authorCaputo, Fabrizio [UNESP]
dc.contributor.authorDenadai, Benedito Sergio [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Aalborg
dc.date.accessioned2013-09-30T18:49:04Z
dc.date.accessioned2014-05-20T13:58:39Z
dc.date.available2013-09-30T18:49:04Z
dc.date.available2014-05-20T13:58:39Z
dc.date.issued2010-12-01
dc.description.abstractSingle training session (STS) may increase the power output (i.e., maximal torque) in different contraction types; however, little is known about the neuromuscular adaptations to reach this enhancement. In this way, the present study examined the differences between knee extensors EMG, kinematics, and dynamometry at 60 and 180A degrees A s(-1) before (PRE) and after (POST) a STS. Seventeen healthy males completed three different tasks: (1) 5-maximal isokinetic knee extensions, without previous habituation (PRE) at 60 and 180A degrees A s(-1); (2) in the same day and after a proper rest, two bouts of 5-maximal isokinetic contractions (STS) at 60 and 180A degrees A s(-1); and (3) in a new visit, POST consisted in new 5-maximal isokinetic contractions at 60 and 180A degrees A s(-1). The main parameters examined were: knee extensors peak torque (PT), total work (TW), EMG (prior to the movement onset, agonist and antagonist activation), rate of force (RFD), and velocity development (RVD). There was significant increase in PT [12% (60A degrees A s(-1)) and 8.7% (180A degrees A s(-1))] and TW [13.5% (60A degrees A s(-1)) and 10.7% (180A degrees A s(-1))] from PRE to POST sessions. Increases in RFD were found for both velocities (p < 0.05); however, RVD and vastus lateralis EMG prior to the movement onset were significantly higher for POST only at 60A degrees A s(-1). The RFD percentage of change (%change) was significantly correlated to %change for PT at 60A degrees A s(-1) (r (2) = 0.53) and 180A degrees A s(-1) (r (2) = 0.45). In conclusion, STS improves neural strategies to contract muscles stronger and faster at the slowest velocity, while higher velocities present different adaptations and might need more practice to further adaptations.en
dc.description.affiliationSão Paulo State Univ, UNESP, Human Performance Lab, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUniv Aalborg, Dept Hlth Sci & Technol, Ctr Sensory Motor Interact, Aalborg, Denmark
dc.description.affiliationSão Paulo State Univ, UNESP, Biomech Lab, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, UNESP, Human Performance Lab, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, UNESP, Biomech Lab, BR-13506900 Rio Claro, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent1127-1133
dc.identifierhttp://dx.doi.org/10.1007/s00421-010-1599-z
dc.identifier.citationEuropean Journal of Applied Physiology. New York: Springer, v. 110, n. 6, p. 1127-1133, 2010.
dc.identifier.doi10.1007/s00421-010-1599-z
dc.identifier.issn1439-6319
dc.identifier.lattes1907479250833033
dc.identifier.urihttp://hdl.handle.net/11449/20838
dc.identifier.wosWOS:000284465900005
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofEuropean Journal of Applied Physiology
dc.relation.ispartofjcr2.401
dc.relation.ispartofsjr1,186
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectElectromyographyen
dc.subjectAdaptationsen
dc.subjectNeural strategiesen
dc.subjectConcentric, isokineticen
dc.titleEffects of a single habituation session on neuromuscular isokinetic profile at different movement velocitiesen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.lattes1907479250833033[5]
unesp.author.orcid0000-0003-0775-1889[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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Artigos - Educação Física - IBRC