Please use this identifier to cite or link to this item:
http://hdl.handle.net/10553/134361
DC Field | Value | Language |
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dc.contributor.author | Skattebo, Øyvind | en_US |
dc.contributor.author | Capelli, Carlo | en_US |
dc.contributor.author | López Calbet, José Antonio | en_US |
dc.contributor.author | Hallen,Jostein | en_US |
dc.date.accessioned | 2024-10-07T18:36:29Z | - |
dc.date.available | 2024-10-07T18:36:29Z | - |
dc.date.issued | 2024 | en_US |
dc.identifier.issn | 0905-7188 | en_US |
dc.identifier.uri | http://hdl.handle.net/10553/134361 | - |
dc.description.abstract | Aim: 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.language | eng | en_US |
dc.relation.ispartof | Scandinavian Journal of Medicine and Science in Sports | en_US |
dc.source | Scandinavian Journal of Medicine and Science in Sports, [ISSN:0905-7188, eISSN 1600-0838], v. 34, n. 7 (14688), [Julio 2024) | en_US |
dc.subject | 241106 Fisiología del ejercicio | en_US |
dc.subject.other | Exercise training | en_US |
dc.subject.other | H release + | en_US |
dc.subject.other | Ion transport | en_US |
dc.subject.other | Lactate release | en_US |
dc.subject.other | Na -K -ATPase + + | en_US |
dc.subject.other | NHE1 | en_US |
dc.subject.other | pH regulation | en_US |
dc.subject.other | Skeletal muscle | en_US |
dc.title | Endurance Training Improves Leg Proton Release and Decreases Potassium Release During High-Intensity Exercise in Normoxia and Hypobaric Hypoxia | en_US |
dc.type | info:eu-repo/semantics/article | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1111/sms.14688 | en_US |
dc.identifier.pmid | 38973702 | - |
dc.identifier.scopus | 2-s2.0-85197731736 | - |
dc.contributor.orcid | 0000-0003-0771-9715 | - |
dc.contributor.orcid | 0000-0002-3278-1337 | - |
dc.contributor.orcid | 0000-0002-9215-6234 | - |
dc.contributor.orcid | 0000-0002-6646-0734 | - |
dc.identifier.issue | 7 | - |
dc.relation.volume | 34 | en_US |
dc.investigacion | Ciencias Sociales y Jurídicas | en_US |
dc.type2 | Artículo | en_US |
dc.description.numberofpages | 13 | en_US |
dc.utils.revision | Sí | en_US |
dc.date.coverdate | Junio 2024 | en_US |
dc.identifier.ulpgc | Sí | en_US |
dc.contributor.buulpgc | BU-FIS | en_US |
dc.description.sjr | 1,485 | |
dc.description.jcr | 4,1 | |
dc.description.sjrq | Q1 | |
dc.description.jcrq | Q1 | |
dc.description.scie | SCIE | |
dc.description.miaricds | 11,0 | |
item.grantfulltext | open | - |
item.fulltext | Con texto completo | - |
crisitem.author.dept | GIR IUIBS: Rendimiento humano, ejercicio físico y salud | - |
crisitem.author.dept | IU de Investigaciones Biomédicas y Sanitarias | - |
crisitem.author.dept | Departamento de Educación Física | - |
crisitem.author.dept | GIR IUIBS: Rendimiento humano, ejercicio físico y salud | - |
crisitem.author.dept | IU de Investigaciones Biomédicas y Sanitarias | - |
crisitem.author.orcid | 0000-0002-9215-6234 | - |
crisitem.author.parentorg | IU de Investigaciones Biomédicas y Sanitarias | - |
crisitem.author.parentorg | IU de Investigaciones Biomédicas y Sanitarias | - |
crisitem.author.fullName | López Calbet, José Antonio | - |
crisitem.author.fullName | Hallen,Jostein | - |
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