Efeitos ergogênicos da suplementação de beta-alanina na performance em exercícios aeróbicos e anaeróbicos

Abstract

Objective: To review the ergogenic effect of beta-alanine supplementation on sports performance, both in anaerobic and aerobic modalities. Method: This is a literature review carried out in the Pubmed, SciELO, LILACS and Capes databases, by articles published in the last five years, carried out in humans, using the descriptors in Portuguese and English beta-alanine, carnosine, exercise, performance, anaerobic and aerobic. In the selection process, inclusion and exclusion criteria were applied, reading of titles and abstracts, exclusion of duplicates and full reading. Results: After applying the search methodology and exclusion criteria, we obtained 13 qualified studies, eight studies demonstrated positive results in performance with the use of beta-alanine as supplementation, five studies observed a negative effect, four of which were aerobic modality and one anaerobic, but three of these studies showed individualized results. Conclusion: Beta-alanine supplementation can contribute ergogenically to both metabolic pathways when used in dosages between 3.2 to 6.4 grams per day for a period longer than 4 weeks. Despite the number of studies with positive conclusions regarding the efficacy of carnosine's buffering effect, more studies are needed to evaluate the various factors that diverge results among populations and analyzed modalities, particularly when used acutely.