VARIATION OF EXPLOSIVE FORCE AT DIFFERENT TIMES OF DAY

dc.contributor.authorPereira, R.
dc.contributor.authorMachado, M.
dc.contributor.authorRibeiro, W.
dc.contributor.authorRusso, Adriana Kowalesky [UNIFESP]
dc.contributor.authorPaula, A. de
dc.contributor.authorLazo-Osorio, R. A.
dc.contributor.institutionUESB
dc.contributor.institutionUniv Vale Paraiba UNIVAP
dc.contributor.institutionUniv Iguacu
dc.contributor.institutionUniv Fdn Itaperuna FUNITA
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.date.accessioned2018-06-15T14:04:26Z
dc.date.available2018-06-15T14:04:26Z
dc.date.issued2011-01-01
dc.description.abstractAIM: The purpose of this study was to compare the explosive force and electromyographic (EMG) activity at three different times of the day. METHODS: Thirty healthy subjects took part in the study, and carried out two maximum isometric voluntary knee extensions to measure explosive force, through contractile impulse (Cl) and rate of force development (RFD), and myoelectric signals from quadriceps muscles in the following periods: 07:30-09:30, 13:30-15:30 and 19:30-21:30 (called morning, afternoon and night respectively), on three non-consecutive days. RESULTS: The body temperature was lower in the morning than in the afternoon and night periods. The explosive force, evaluated through contractile impulse (Cl) and rate of force development (RFD), was greater at night than in the morning, without differences in the myoelectric signal. CONCLUSION: The ability to produce explosive force varies throughout different times of the day without variation in muscular recruitment, indicating that peripheral and not neural mechanisms could be responsible for this variation.en
dc.description.affiliationUESB, Dept Biol Sci, Jequie, BA, Brazil
dc.description.affiliationUniv Vale Paraiba UNIVAP, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUniv Iguacu, Fac Biol Sci & Hlth, Lab Physiol & Biokinet, Itaperuna, RJ, Brazil
dc.description.affiliationUniv Fdn Itaperuna FUNITA, Lab Human Movement Studies, Itaperuna, RJ, Brazil
dc.description.affiliationUniv Fed Sao Paulo, Escola Paulista Med UNIFESP EPM, Sao Paulo, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, Escola Paulista Med UNIFESP EPM, Sao Paulo, Brazil
dc.description.sourceWeb of Science
dc.format.extent3-9
dc.identifierhttp://dx.doi.org/10.5604/935861
dc.identifier.citationBiology Of Sport. Warsaw 45: Inst Sport, v. 28, n. 1, p. 3-9, 2011.
dc.identifier.doi10.5604/935861
dc.identifier.fileWOS000289182300001.pdf
dc.identifier.issn0860-021X
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/42828
dc.identifier.wosWOS:000289182300001
dc.language.isoeng
dc.publisherInst Sport
dc.relation.ispartofBiology Of Sport
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectelectromyographyen
dc.subjectmedian frequencyen
dc.subjectbody temperatureen
dc.subjectcircadian cycleen
dc.subjectquadriceps muscleen
dc.titleVARIATION OF EXPLOSIVE FORCE AT DIFFERENT TIMES OF DAYen
dc.typeinfo:eu-repo/semantics/article
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