Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/134361
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dc.contributor.authorSkattebo, Øyvinden_US
dc.contributor.authorCapelli, Carloen_US
dc.contributor.authorLópez Calbet, José Antonioen_US
dc.contributor.authorHallen,Josteinen_US
dc.date.accessioned2024-10-07T18:36:29Z-
dc.date.available2024-10-07T18:36:29Z-
dc.date.issued2024en_US
dc.identifier.issn0905-7188en_US
dc.identifier.urihttp://hdl.handle.net/10553/134361-
dc.description.abstractAim: To assess the impact of endurance training on skeletal muscle release of H+ and K+. Methods: Nine participants performed one-legged knee extension endurance training at moderate and high intensities (70%–85% of Wpeak), three to four sessions·week−1 for 6 weeks. Post-training, the trained and untrained (control) leg performed two-legged knee extension at low, moderate, and high intensities (40%, 62%, and 83% of Wpeak) in normoxia and hypoxia (~4000 m). The legs were exercised simultaneously to ensure identical arterial inflow concentrations of ions and metabolites, and identical power output was controlled by visual feedback. Leg blood flow was measured (ultrasound Doppler), and acid–base variables, lactate- and K+ concentrations were assessed in arterial and femoral venous blood to study K+ and H+ release. Ion transporter abundances were assessed in muscle biopsies. Results: Lactate-dependent H+ release was similar in hypoxia to normoxia (p = 0.168) and was lower in the trained than the control leg at low–moderate intensities (p = 0.060–0.006) but similar during high-intensity exercise. Lactate-independent and total H+ releases were higher in hypoxia (p < 0.05) and increased more with power output in the trained leg (leg-by-power output interactions: p = 0.02). K+ release was similar at low intensity but lower in the trained leg during high-intensity exercise in normoxia (p = 0.024) and hypoxia (p = 0.007). The trained leg had higher abundances of Na+/H+ exchanger 1 (p = 0.047) and Na+/K+ pump subunit α (p = 0.036). Conclusion: Moderate- to high-intensity endurance training increases lactate-independent H+ release and reduces K+ release during high-intensity exercise, coinciding with increased Na+/H+ exchanger 1 and Na+/K+ pump subunit α muscle abundances.en_US
dc.languageengen_US
dc.relation.ispartofScandinavian Journal of Medicine and Science in Sportsen_US
dc.sourceScandinavian Journal of Medicine and Science in Sports, [ISSN:0905-7188, eISSN 1600-0838], v. 34, n. 7 (14688), [Julio 2024)en_US
dc.subject241106 Fisiología del ejercicioen_US
dc.subject.otherExercise trainingen_US
dc.subject.otherH release +en_US
dc.subject.otherIon transporten_US
dc.subject.otherLactate releaseen_US
dc.subject.otherNa -K -ATPase + +en_US
dc.subject.otherNHE1en_US
dc.subject.otherpH regulationen_US
dc.subject.otherSkeletal muscleen_US
dc.titleEndurance Training Improves Leg Proton Release and Decreases Potassium Release During High-Intensity Exercise in Normoxia and Hypobaric Hypoxiaen_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.typeArticleen_US
dc.identifier.doi10.1111/sms.14688en_US
dc.identifier.pmid38973702-
dc.identifier.scopus2-s2.0-85197731736-
dc.contributor.orcid0000-0003-0771-9715-
dc.contributor.orcid0000-0002-3278-1337-
dc.contributor.orcid0000-0002-9215-6234-
dc.contributor.orcid0000-0002-6646-0734-
dc.identifier.issue7-
dc.relation.volume34en_US
dc.investigacionCiencias Sociales y Jurídicasen_US
dc.type2Artículoen_US
dc.description.numberofpages13en_US
dc.utils.revisionen_US
dc.date.coverdateJunio 2024en_US
dc.identifier.ulpgcen_US
dc.contributor.buulpgcBU-FISen_US
dc.description.sjr1,485
dc.description.jcr4,1
dc.description.sjrqQ1
dc.description.jcrqQ1
dc.description.scieSCIE
dc.description.miaricds11,0
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.deptGIR IUIBS: Rendimiento humano, ejercicio físico y salud-
crisitem.author.deptIU de Investigaciones Biomédicas y Sanitarias-
crisitem.author.orcid0000-0002-9215-6234-
crisitem.author.parentorgIU de Investigaciones Biomédicas y Sanitarias-
crisitem.author.parentorgIU de Investigaciones Biomédicas y Sanitarias-
crisitem.author.fullNameLópez Calbet, José Antonio-
crisitem.author.fullNameHallen,Jostein-
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