A study from Brazil conducted by Caroline de Andrade Kratz with colleagues in 2017. Did investigate the effects of 4 weeks beta-alanine supplementation, with a protocol specifically designed for the metabolic demands of judo.
The study was done on highly trained male judo athletes (training volume 20 h/week) that was randomly assigned beta-alanine or placebo supplement. The study was a randomised, double-blind, placebo-controlled, parallel-group trial.
The group that was assigned Beta-alanin took 6,4 g/day of beta-alanine during a 4 week period. The dosages were divided into four intake per day, along with the main meals. The athlets did take 2 capsules each containing 800mg of beta-alanine. The group that had placebo did take capsules of dextrose the same amount as the beta-alanine and identical in number each day, size and appearance.
The assessment of performance before and after the supplementation was conducted by 5 minutes of simulated judo match (randori), then followed by 3 bouts of Special Judo Fitness Test (SJFT). Blood was collected for determination of the pH-value, the concentration of bicarbonate (HCO3- ) and the concentration of lactate.
The result showed a significant increase in total throws performance at all bouts for the Special Judo Fitness Test, but also a significant increase for the total number of throws conducted in total for the 3 bouts. The athletes taking the beta-alanine supplementation did increase performance in the Special Judo Fitness Test by 8.9 ± 4.7 %, compared with the placebo group where none of the athletes improved significantly. No significance were observed from the blood analysis before and after supplementation between groups. Only an increase of the concentration in blood lactate for the beta-alanin group after supplementation, maybe due to higher performance after supplementation.
Conclusion from the study was that 4 weeks of beta-alanine supplementation was improving judo performance effectively in highly trained judo athletes.
Caroline de Andrade Kratz,Vitor de Salles Painelli,Kleiner Márcio de Andrade Nemezio,Rafael Pires da Silva,Emerson Franchini,Alessandro Moura Zagatto,Bruno Gualano,Guilherme Giannini Artioli (2017) Beta-alanine supplementation enhances judo-related performance in highly-trained athletes. Journal of Science and Medicine in Sport, 20(4): 403-408.