Five Weeks of Sprint Interval Training Improve Muscle Glycolytic Content and Activity but Not Time to Task Failure in Severe-Intensity Exercise

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorHamad Bin Khalifa University-
Autor(es): dc.contributorUniversity of Calgary-
Autor(es): dc.contributorCentro Universitário Nossa Senhora Do Patrocínio-
Autor(es): dc.creatorAraujo Bonetti De Poli, Rodrigo-
Autor(es): dc.creatorMurias, Juan Manuel-
Autor(es): dc.creatorAntunes, Barbara Moura-
Autor(es): dc.creatorMarinari, Gabriele-
Autor(es): dc.creatorDutra, Yago Medeiros-
Autor(es): dc.creatorMilioni, Fabio-
Autor(es): dc.creatorZagatto, Alessandro Moura-
Data de aceite: dc.date.accessioned2025-08-21T22:44:35Z-
Data de disponibilização: dc.date.available2025-08-21T22:44:35Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1249/MSS.0000000000003425-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/305219-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/305219-
Descrição: dc.descriptionPurpose This study examined the impact of a 5-wk sprint interval training (SIT) intervention on time to task failure (TTF) during severe-intensity constant work rate (CWR) exercise, as well as in glycolytic enzymatic content and activity, and glycogen content. Methods Fourteen active males were randomized into either a SIT group (n = 8) composed of 15 SIT sessions over 5 wk, or a control group (n = 6). At pretraining period, participants performed i) ramp incremental test to measure the cardiorespiratory function; ii) CWR cycling TTF at 150% of the power output (PO) at the respiratory compensation point (RCP-PO) with muscle biopsies at rest and immediately following task failure. After 5 wk, the same evaluations were repeated (i.e., exercise intensities matched to current training status), and an additional cycling CWR matched to pretraining 150% RCP-PO was performed only for TTF evaluation. The content and enzymatic activity of glycogen phosphorylase (GPhos), hexokinase (HK), phosphofructokinase (PFK), and lactate dehydrogenase (LDH), as well as the glycogen content, were analyzed. Content of monocarboxylate transporter isoform 4 (MCT4) and muscle buffering capacity were also measured. Results Despite improvements in total work performed at CWR posttraining, no differences were observed for TTF. The GPhos, HK, PFK, and LDH content and activity, and glycogen content also improved after training only in the SIT group. Furthermore, the MCT4 concentrations and muscle buffering capacity were also improved only for the SIT group. However, no difference in glycogen depletion was observed between groups and time. Conclusions Five weeks of SIT improved the glycolytic pathway parameters and total work performed; however, glycogen depletion was not altered during CWR severe-intensity exercise, and TTF remained similar.-
Descrição: dc.descriptionLaboratory of Physiology and Sport Performance (LAFIDE) Graduate Program in Movement Sciences São Paulo State University (UNESP) School of Sciences-
Descrição: dc.descriptionCollege of Health and Life Sciences Hamad Bin Khalifa University-
Descrição: dc.descriptionFaculty of Kinesiology University of Calgary-
Descrição: dc.descriptionCentro Universitário Nossa Senhora Do Patrocínio-
Descrição: dc.descriptionLaboratory of Physiology and Sport Performance (LAFIDE) Graduate Program in Movement Sciences São Paulo State University (UNESP) School of Sciences-
Formato: dc.format1355-1367-
Idioma: dc.languageen-
Relação: dc.relationMedicine and Science in Sports and Exercise-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectENZYMATIC ACTIVITY-
Palavras-chave: dc.subjectEXERCISE TOLERANCE-
Palavras-chave: dc.subjectHIGH-INTENSITY EXERCISE-
Palavras-chave: dc.subjectMUSCLE BIOPSY-
Palavras-chave: dc.subjectMUSCLE GLYCOGEN-
Título: dc.titleFive Weeks of Sprint Interval Training Improve Muscle Glycolytic Content and Activity but Not Time to Task Failure in Severe-Intensity Exercise-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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