The pattern and timing of breathing during incremental exercise: a normative study

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dc.contributor.authorNeder, Jose Alberto [UNIFESP]
dc.contributor.authorDal Corso, Simone [UNIFESP]
dc.contributor.authorMalaguti, Carla [UNIFESP]
dc.contributor.authorReis, Sandra [UNIFESP]
dc.contributor.authorDe Fuccio, Marcelo Bicalho de [UNIFESP]
dc.contributor.authorSchmidt, H. [UNIFESP]
dc.contributor.authorFuld, J. P.
dc.contributor.authorNery, Luiz Eduardo [UNIFESP]
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionUniv Glasgow
dc.date.accessioned2016-01-24T12:33:44Z
dc.date.available2016-01-24T12:33:44Z
dc.date.issued2003-03-01
dc.description.abstractClinical evaluation of the pattern and timing of breathing during submaximal exercise can be valuable for the identification of the mechanical ventilatory consequences of different disease processes and for assessing the efficacy of certain interventions.Sedentary individuals (60 male/60 female, aged 20-80 yrs) were randomly selected from >8,000 subjects and submitted to ramp incremental cycle ergometry. Tidal volume (V-T)/ resting inspiratory capacity, respiratory frequency, total respiratory time (Trot), inspiratory time (T-I), expiratory time (T-E), duty cycle (TI/Ttot) and mean inspiratory flow (V-T/T-I) were analysed at selected submaximal ventilatory intensities.Senescence and female sex were associated with a more tachypnoeic breathing pattern during isoventilation. the decline in T-tot was proportional to the TI and TE P reductions, i.e. T-I/T-tot was remarkably constant across age strata, independent of sex. the pattern, but not timing, of breathing was also influenced by weight and height; a set of demographically and anthropometrically based prediction equations are therefore presented.These data provide a frame of reference for assessing the normality of some clinically useful indices of the pattern and timing of breathing during incremental cycle ergometry in sedentary males and females aged 20-80 yrs.en
dc.description.affiliationUniversidade Federal de São Paulo, Pulmonary Funct & Clin Exercise Physiol Unit, Div Resp, Dept Med,Paulista Sch Med, BR-04020050 São Paulo, Brazil
dc.description.affiliationUniv Glasgow, Ctr Exercise Sci & Med, Inst Biol & Life Sci, Glasgow, Lanark, Scotland
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Pulmonary Funct & Clin Exercise Physiol Unit, Div Resp, Dept Med,Paulista Sch Med, BR-04020050 São Paulo, Brazil
dc.description.sourceWeb of Science
dc.format.extent530-538
dc.identifierhttp://dx.doi.org/10.1183/09031936.03.00045402
dc.identifier.citationEuropean Respiratory Journal. Sheffield: European Respiratory Soc Journals Ltd, v. 21, n. 3, p. 530-538, 2003.
dc.identifier.doi10.1183/09031936.03.00045402
dc.identifier.issn0903-1936
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/27159
dc.identifier.wosWOS:000181578200026
dc.language.isoeng
dc.publisherEuropean Respiratory Soc Journals Ltd
dc.relation.ispartofEuropean Respiratory Journal
dc.rightsAcesso aberto
dc.subjectbreathing patternen
dc.subjectcardiopulmonary exercise testingen
dc.subjectexerciseen
dc.subjectnormal valuesen
dc.subjectventilationen
dc.titleThe pattern and timing of breathing during incremental exercise: a normative studyen
dc.typeArtigo
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