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Resposta fisiológica e perceptual na velocidade crítica e ponto de compensação respiratória

dc.contributor.authorMassini, Danilo Alexandre [UNESP]
dc.contributor.authorPessôa Filho, Dalton Muller [UNESP]
dc.contributor.authorCaritá, Renato Aparecido Corrêa [UNESP]
dc.contributor.authorDenadai, Benedito Sérgio [UNESP]
dc.date.accessioned2018-12-11T17:30:38Z
dc.date.available2018-12-11T17:30:38Z
dc.date.issued2016-01-01
dc.identifierhttp://dx.doi.org/10.1590/1517-869220162206158906
dc.identifier.citationRevista Brasileira de Medicina do Esporte, v. 22, n. 6, p. 439-444, 2016.
dc.identifier.issn1517-8692
dc.identifier.urihttp://hdl.handle.net/11449/178496
dc.description.abstractIntroduction: The respiratory compensation point (RCP) is the metabolic rate for a maximal incremental test, from which the control of the acid-base balance is lost. However, the critical velocity (CV) defines the upper limit of the heavy exercise domain, in which the exhaustion is not related to metabolic disturbance. Objective: To compare the physiological (heart rate - HR, blood lactate - [La], and oxygen uptake - VO2) and perceptual (rating of perceived exertion - RPE) responses, while exercising at CV and at RCP, in order to analyze contextual similarities. Methods: Ten adolescent runners (15.8±1.7 years old) underwent progressive test (increments of 1.0 km×h-1 per minute until exhaustion) to determine VO2max, RCP and the correspondent velocities. The CV was estimated for three efforts with time limit of 2 to 12 minutes. The participants performed two efforts of seven minutes each on separate days, in CV and vRCP HR, RPE (scale 6-20) were recorded every minute, and [La] was measured at rest and after each effort. The VO2 was analyzed breath by breath during efforts. The Mann-Whitney test compared HR, [La], VO2, and RPE responses in CV and vRCP. The variance between these responses was examined by the scatter coefficient (R2). The significance level was P≤0.05. Results: The maximum values in the progressive test were 56.1±5.5 ml×kg-1×min-1 (VO2max), 16.5±1.7 km×h-1 (vVO2max), 202±12 bpm (HRmax), 19.4±1.3 (RPE) and 12.7±3.1 mmol×L-1 ([La]). No differences were observed between CV (at 83.8±3.6% vVO2max) and vRCP (at 86.5±3.6% vVO2max) in RPE responses (P=0.761), HR (P=0.096), [La] (P=0.104) and VO2 (P=0.364) responses. Correlations were observed between the CV and vRCP in [La] (R2=0.76; P=0.011), RPE (R2=0.84; P<0.01) and VO2max (R2=0.82; P<0.01) responses. Conclusion: It was inferred that exercise in RCP reproduced a physiological and perceptual response similar to that in CV.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent439-444
dc.language.isopor
dc.relation.ispartofRevista Brasileira de Medicina do Esporte
dc.sourceScopus
dc.subjectExercise
dc.subjectHeart rate
dc.subjectLactic acid
dc.subjectOxygen consumption
dc.titleRespuesta fisiológica y perceptual en la velocidad crítica y punto de compensación respiratoriaes
dc.titleResposta fisiológica e perceptual na velocidade crítica e ponto de compensação respiratóriapt
dc.title.alternativePhysiological and perceptual response at critical speed and respiratory compensation pointen
dc.typeArtigo
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationFaculdade de Ciências Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
dc.description.affiliationLaboratório de Performance Humana Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
dc.description.affiliationUnespFaculdade de Ciências Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
dc.description.affiliationUnespLaboratório de Performance Humana Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
dc.identifier.doi10.1590/1517-869220162206158906
dc.identifier.scieloS1517-86922016000600439
dc.rights.accessRightsAcesso aberto
dc.description.sponsorshipIdCNPq: 479262/2013-6
dc.identifier.scopus2-s2.0-85006364934
dc.identifier.fileS1517-86922016000600439.pdf
unesp.author.lattes1907479250833033[4]
unesp.author.orcid0000-0003-1088-0040[1]
unesp.author.orcid0000-0003-3975-9260[2]
unesp.author.orcid0000-0002-6198-0423[3]
unesp.author.orcid0000-0003-0775-1889[4]
dc.relation.ispartofsjr0,185
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