β-Alanine Plus Sodium Bicarbonate Co-Supplementation Does Not Decrease Neuromuscular Fatigue in Swimming

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorRibeiro, Felipe A.-
Autor(es): dc.creatorBertucci, Danilo R.-
Autor(es): dc.creatorKalva-Filho, Carlos A.-
Autor(es): dc.creatorDE ARRUDA, Tarine B.-
Autor(es): dc.creatorNorberto, Matheus S.-
Autor(es): dc.creatorRaspantini, Giovanni L.-
Autor(es): dc.creatorDE FREITAS, Ellen C.-
Autor(es): dc.creatorZagatto, Alessandro M.-
Autor(es): dc.creatorPapoti, Marcelo-
Data de aceite: dc.date.accessioned2025-08-21T15:13:17Z-
Data de disponibilização: dc.date.available2025-08-21T15:13:17Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.70252/JSRH7021-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/309201-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/309201-
Descrição: dc.descriptionThis study aimed to investigate the effects of chronic β-alanine (βA) plus acute sodium bicarbonate (SB) co-supplementation on neuromuscular fatigue during high-intensity intermittent efforts in swimming. Eleven regional and national competitive-level young swimmers performed a neuromuscular fatigue assessment before and immediately after two 20 × 25-m front crawl maximal efforts every 90 s, performed at pre-and post-4-week co-supplementation. Neuromuscular fatigue was evaluated by percutaneous electrical stimuli through the twitch interpolation technique on the triceps brachii and quadriceps femoris. Performance was defined by the mean time of the 20 efforts and blood samples to lactate concentrations were collected every four efforts. Participants supplemented 3.2–6.4 g∙day−1 of chronic βA or placebo (PL) during four weeks, and acute 0.3 g∙kg−1 of SB or PL 60 min before the second assessment (allowing βA+SB and PL+PL groups). No statistical changes were found in neuromuscular fatigue of triceps brachii. In the quadriceps femoris, a main effect of time was found in potentiated twitch delta values in pooled groups, showing a statistical increase of 19.01% after four weeks (Δ = 13.05 [0.35-25.75] N; p = 0.044), without time × group interactions. No statistical difference was found in the swimming performance. Blood lactate increased by 25.06% only in the βA+SB group (Δ = 6.40 [4.62-8.18] mM; pBonf < 0.001) after the supplementation period. In conclusion, 4-week βA and SB co-supplementation were not able to reduce neuromuscular fatigue levels and improve performance in high-intensity intermittent efforts, but statistically increased blood lactate levels.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionRibeirão Preto Medical School University of Sao Paulo, SP-
Descrição: dc.descriptionBiosciences Institute Sao Paulo State University, SP-
Descrição: dc.descriptionDepartment of Physical Education Sao Paulo State University, SP-
Descrição: dc.descriptionSchool of Pharmaceutical Sciences of Ribeirao Preto University of Sao Paulo, SP-
Descrição: dc.descriptionSchool of Physical Education and Sport of Ribeirao Preto University of Sao Paulo, SP-
Descrição: dc.descriptionBiosciences Institute Sao Paulo State University, SP-
Descrição: dc.descriptionDepartment of Physical Education Sao Paulo State University, SP-
Formato: dc.format648-659-
Idioma: dc.languageen-
Relação: dc.relationInternational Journal of Exercise Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectbuffering capacity-
Palavras-chave: dc.subjectErgogenic aids-
Palavras-chave: dc.subjectvoluntary activation-
Título: dc.titleβ-Alanine Plus Sodium Bicarbonate Co-Supplementation Does Not Decrease Neuromuscular Fatigue in Swimming-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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