Suplementação de bicarbonato de sódio em esporte de combate: uma revisão sistemática e metanálise

Abstract

Aims: to verifies the effects of sodium bicarbonate (NaHCO3) supplementation on biochemical and physical measurements of combat sports athletes. Methods: a systematic review of papers indexed in three databases (Pubmed, Periódicos Capes, and Schollar Google) was carried out until October 2020, using descriptors related to the supplementation of NaHCO3 in combat sports. 39 papers were identified, after application of inclusion and exclusion criteria 8 articles were selected, whose methodological quality (8-9 points) was assessed using the PEDro scale. Blood lactate, rating of perceived exertion, special judo fitness test, Dummy throw, peak and mean power for Wingate. The meta-analysis of random effects was used and the size of the effect was adjusted by the H ’adapted g’ and the heterogeneity explored by I2. The results were obtained as weighted averages and 95% CI, significance limit set at p<0.05. Results: NaHCO3 supplementation has a significant effect on the increase in blood lactate (p=0.006) of the athletes studied; however, the performance measures (rating of perceived exertion, power, and specific performance) do not showed a significant difference (p˂0.05). Conclusion: NaHCO3 supplementation causes a significant increase in blood lactate, indicating an ergogenic effect in terms of buffering, which can delay the onset of fatigue and contribute to the performance of combat sports athletes. New experimental studies are published that evaluate the effect of acute and chronic NaHCO3 supplementation in specific tests of combat sports and women.