Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletes

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dc.contributor.authorDenadai, Benedito Sergio [UNESP]
dc.contributor.authorGreco, Camila Coelho [UNESP]
dc.contributor.authorTufik, Sergio
dc.contributor.authorde Mello, Marco Tulio
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.date.accessioned2014-05-20T15:24:50Z
dc.date.available2014-05-20T15:24:50Z
dc.date.issued2007-01-01
dc.description.abstractThe objective of this study was to examine the effects of high intensity exhaustive running exercise on the muscular torque capacity of the knee extensors for two types of contraction (concentric and eccentric) at different angular velocities (60 and 180 degrees/s) in well-trained runners. Eleven male runners specialized in middle and long-distance running volunteered to participate in this study. Initially each subject performed, on different days, two familiarization sessions on an isokinetic dynamometer and an incremental treadmill test to volitional exhaustion to determine the velocity associated with the onset of blood lactate accumulation (OBLA). The subjects then returned to the laboratory on two occasions, separated by at least seven days, to perform maximal isokinetic knee contractions at each of the velocities under eccentric (Ecc) and concentric (Con) conditions. Conducted randomly, one test was performed after a standardized warm-up period of 5 min at 50% VO2 max. The other test was performed 15 min after continuous running at OBLA until volitional exhaustion. Following this high intensity exercise there was a significant reduction of Con at 60 degrees/s and a significant reduction of Ecc at both velocities. Percent strength losses after running exercise were significantly different between contraction types only at 180 degrees/s. We can conclude that the reduction in isokinetic peak torque of the knee extensors after a session of high intensity exhaustive running exercise at OBLA depends on the contraction type and angular velocity.en
dc.description.affiliationUNESP, Lab Avaliacao Performance Humana, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUniv Fed São Paulo, Univ Fed São Paulo, Dept Psychobiol & Sleep Inst, São Paulo, Brazil
dc.description.affiliationUnespUNESP, Lab Avaliacao Performance Humana, BR-13506900 Rio Claro, SP, Brazil
dc.format.extent281-285
dc.identifierhttp://iospress.metapress.com/content/em767582h2759p26/
dc.identifier.citationIsokinetics and Exercise Science. Amsterdam: IOS Press, v. 15, n. 4, p. 281-285, 2007.
dc.identifier.issn0959-3020
dc.identifier.lattes1907479250833033
dc.identifier.lattes7416129894680689
dc.identifier.urihttp://hdl.handle.net/11449/35368
dc.identifier.wosWOS:000251876000005
dc.language.isoeng
dc.publisherIOS Press
dc.relation.ispartofIsokinetics and Exercise Science
dc.relation.ispartofjcr0.568
dc.relation.ispartofsjr0,222
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectconcentricpt
dc.subjecteccentricpt
dc.subjectangular velocitypt
dc.subjectaerobic exercisept
dc.subjectfatiguept
dc.titleEffects of high intensity running to fatigue on isokinetic muscular strength in endurance athletesen
dc.typeArtigo
dcterms.licensehttp://www.iospress.nl/service/authors/author-copyright-agreement/
dcterms.rightsHolderIOS Press
unesp.author.lattes1907479250833033[1]
unesp.author.lattes7416129894680689[2]
unesp.author.orcid0000-0003-0775-1889[1]
unesp.author.orcid0000-0003-3896-2208[4]
unesp.author.orcid0000-0002-7611-9759[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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