Effect of carbohydrate supplementation on strength parameters during a Brazilian Jiu-Jitsu simulated tournament
Gabriella Berwig Möller, Sport Sciences for Health volume 16, pages561–569(2020)
Purpose
This study aimed to analyze the effects of carbohydrate supplementation on strength parameters during a Brazilian Jiu-Jitsu (BJJ) simulated tournament.
Methods
Fourteen male BJJ amateurs athletes took part in a simulated tournament (3 × 8 min matches, 10-min rest), in a randomized double-blind, placebo-controlled, crossover trial. In two different sessions (7-day washout), BJJ athletes ingested 30 g of maltodextrin (CARB) or placebo (PLA). Were evaluated: maximal isometric handgrip strength (MIH), dynamic strength endurance [Kimono grip strength test dynamic (KGSTD)], muscular power [horizontal countermovement jump, (HCMJ)], ratings of perceived exertion (RPE), and lactate concentration.
Results
There was an interaction effect on MIH strength (p = 0.029 in right hand). MIH did not change during the tournament simulation in the CARB group, but decreased in the PLA group in the right-hand post-match. An interaction effect in KGSTD was observed (p = 0.006). Both groups had a decrease in KGSTD performance over the match; however, in the second interval, the CARB group showed higher strength than PLA. There was an interaction effect on HCMJ (p = 0.003). HCMJ increased during the tournament in the both groups. Lactate level and RPE indicated that exercise was intense and similar between the groups.
Conclusion
Carbohydrate supplementation provides a mild improve in the BJJ athlete’s strength during a simulated tournament.