Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/73077
Campo DC Valoridioma
dc.contributor.authorSkattebo, Øyvinden_US
dc.contributor.authorLópez Calbet, José Antonioen_US
dc.contributor.authorRud, Bjarneen_US
dc.contributor.authorCapelli, Carloen_US
dc.contributor.authorHallén, Josteinen_US
dc.date.accessioned2020-06-08T12:17:11Z-
dc.date.available2020-06-08T12:17:11Z-
dc.date.issued2020en_US
dc.identifier.issn1748-1708en_US
dc.identifier.otherScopus-
dc.identifier.urihttp://hdl.handle.net/10553/73077-
dc.description.abstractWe analysed the importance of systemic and peripheral arteriovenous O2 difference ((Formula presented.) difference and a-vfO2 difference, respectively) and O2 extraction fraction for maximal oxygen uptake ((Formula presented.)). Fick law of diffusion and the Piiper and Scheid model were applied to investigate whether diffusion versus perfusion limitations vary with (Formula presented.). Articles (n = 17) publishing individual data (n = 154) on (Formula presented.), maximal cardiac output ((Formula presented.); indicator-dilution or the Fick method), (Formula presented.) difference (catheters or the Fick equation) and systemic O2 extraction fraction were identified. For the peripheral responses, group-mean data (articles: n = 27; subjects: n = 234) on leg blood flow (LBF; thermodilution), a-vfO2 difference and O2 extraction fraction (arterial and femoral venous catheters) were obtained. (Formula presented.) and two-LBF increased linearly by 4.9-6.0 L · min–1 per 1 L · min–1 increase in (Formula presented.) (R2 =.73 and R2 =.67, respectively; both P <.001). The (Formula presented.) difference increased from 118-168 mL · L–1 from a (Formula presented.) of 2-4.5 L · min–1 followed by a reduction (second-order polynomial: R2 =.27). After accounting for a hypoxemia-induced decrease in arterial O2 content with increasing (Formula presented.) (R2 =.17; P <.001), systemic O2 extraction fraction increased up to ~90% ((Formula presented.) : 4.5 L · min–1) with no further change (exponential decay model: R2 =.42). Likewise, leg O2 extraction fraction increased with (Formula presented.) to approach a maximal value of ~90-95% (R2 =.83). Muscle O2 diffusing capacity and the equilibration index Y increased linearly with (Formula presented.) (R2 =.77 and R2 =.31, respectively; both P <.01), reflecting decreasing O2 diffusional limitations and accentuating O2 delivery limitations. In conclusion, although O2 delivery is the main limiting factor to (Formula presented.), enhanced O2 extraction fraction (≥90%) contributes to the remarkably high (Formula presented.) in endurance-trained individuals.en_US
dc.languageengen_US
dc.relationIdentificacion E Integracion de Nuevos Factores Moleculares, Fisiologicos y Bioelectricos Determinantes Del Rendimiento en El Ejercicio de Sprinten_US
dc.relation.ispartofActa Physiologicaen_US
dc.sourceActa Physiologica [ISSN 1748-1708], v. 230(2), e13486 (Octubre 2020)en_US
dc.subject2411 Fisiología humanaen_US
dc.subject.otherArteriovenous Oxygen Differenceen_US
dc.subject.otherCardiac Outputen_US
dc.subject.otherExerciseen_US
dc.subject.otherLeg Blood Flowen_US
dc.subject.otherLimiting Factorsen_US
dc.subject.otherMaximal Oxygen Uptakeen_US
dc.subject.otherOxygen Diffusionen_US
dc.subject.otherStroke Volumeen_US
dc.titleContribution of oxygen extraction fraction to maximal oxygen uptake in healthy young menen_US
dc.typeinfo:eu-repo/semantics/reviewen_US
dc.typereviewen_US
dc.identifier.doi10.1111/apha.13486en_US
dc.identifier.scopus85085628129-
dc.contributor.authorscopusid56711333700-
dc.contributor.authorscopusid7004323423-
dc.contributor.authorscopusid25655368200-
dc.contributor.authorscopusid7004189630-
dc.contributor.authorscopusid26656659300-
dc.identifier.eissn1748-1716-
dc.investigacionCiencias de la Saluden_US
dc.type2Reseñaen_US
dc.utils.revisionen_US
dc.date.coverdateEnero 2020en_US
dc.identifier.ulpgcen_US
dc.identifier.ulpgcen_US
dc.identifier.ulpgcen_US
dc.identifier.ulpgcen_US
dc.contributor.buulpgcBU-MEDen_US
dc.description.sjr1,591
dc.description.jcr6,311
dc.description.sjrqQ1
dc.description.jcrqQ1
dc.description.scieSCIE
item.grantfulltextopen-
item.fulltextCon texto completo-
crisitem.author.deptGIR IUIBS: Rendimiento humano, ejercicio físico y salud-
crisitem.author.deptIU de Investigaciones Biomédicas y Sanitarias-
crisitem.author.deptDepartamento de Educación Física-
crisitem.author.orcid0000-0002-9215-6234-
crisitem.author.parentorgIU de Investigaciones Biomédicas y Sanitarias-
crisitem.author.fullNameLópez Calbet, José Antonio-
crisitem.project.principalinvestigatorLópez Calbet, José Antonio-
Colección:Reseña
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