Determination of the lactate threshold and maximal blood lactate steady state intensity in aged rats

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dc.contributor.authorCunha, Rafael Rodrigues
dc.contributor.authorde Carvalho Cunha, Verusca Najara
dc.contributor.authorSegundo, Paulo Russo
dc.contributor.authorMoreira, Sergio Rodrigues
dc.contributor.authorKokubun, Eduardo [UNESP]
dc.contributor.authorGrubert Campbell, Carmen Silvia
dc.contributor.authorde Oliveira, Ricardo Jaco
dc.contributor.authorSimoes, Herbert Gustavo
dc.contributor.institutionUniv Catolica Brasilia
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2013-09-30T18:48:49Z
dc.date.accessioned2014-05-20T13:58:29Z
dc.date.available2013-09-30T18:48:49Z
dc.date.available2014-05-20T13:58:29Z
dc.date.issued2009-08-01
dc.description.abstractThe reliability of the lactate threshold (LT) determined in aged rats and its, validity to identify an exercise intensity corresponding to the maximal blood lactate steady state (MLSS) were analyzed. Eighteen male aged Wistar rats (similar to 365 days) were submitted to two incremental swimming tests until exhaustion, consisting of an initial load corresponding to 1% of body mass (BM) and increments of 1% BM at each 3-min with blood lactate ([lac]) measurements. The LT was determined by visual inspection (LT(V)) as well by applying a polynomial function on the [lac]/workload ratio (LT(P)) by considering the vertices of the curve. For the MLSS, twelve animals were submitted, on different days, to 3-4 exercise sessions of 30-min with workload corresponding to 4, 5 or 6% BM. The MLSS was considered the highest exercise intensity at which the [lac] variation was not higher than 0.07 mM.min(-1) during the last 20-min. No differences were observed for the test-retest results (4.9 +/- 0.7 and 5.0 +/- 0.8 %BM for LTv; and 6.0 +/- 0.6 and 5.8 +/- 0.6 %BM for LTp) that did not differ from the MLSS (5.4 +/- 0.5 %BM). The LT identified for aged rats in swimming, both by visual inspection and polynomial function, was reliable and did not differ from the MLSS. Copyright (C) 2009 John Wiley & Sons, Ltd.en
dc.description.affiliationUniv Catolica Brasilia, Grad Program Phys Educ & Hlth, Taguatinga, DF, Brazil
dc.description.affiliationSão Paulo State Univ, Dept Phys Educ, Rio Claro, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Dept Phys Educ, Rio Claro, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Apoio à Pesquisa do Distrito Federal (FAPDF)
dc.description.sponsorshipIdCNPq: 475575/2004-0
dc.description.sponsorshipIdCAPES: 0216054
dc.format.extent351-357
dc.identifierhttp://dx.doi.org/10.1002/cbf.1580
dc.identifier.citationCell Biochemistry and Function. Chichester: John Wiley & Sons Ltd, v. 27, n. 6, p. 351-357, 2009.
dc.identifier.doi10.1002/cbf.1580
dc.identifier.issn0263-6484
dc.identifier.lattes3650843918755682
dc.identifier.orcid0000-0002-9404-3444
dc.identifier.urihttp://hdl.handle.net/11449/20780
dc.identifier.wosWOS:000269384800004
dc.language.isoeng
dc.publisherJohn Wiley & Sons Ltd
dc.relation.ispartofCell Biochemistry and Function
dc.relation.ispartofjcr2.186
dc.relation.ispartofsjr0,520
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectanaerobic thresholden
dc.subjectmaximal lactate steady stateen
dc.subjectswimming exerciseen
dc.subjectagingen
dc.titleDetermination of the lactate threshold and maximal blood lactate steady state intensity in aged ratsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderJohn Wiley & Sons Ltd
unesp.author.lattes3650843918755682
unesp.author.orcid0000-0002-9404-3444[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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