Abstract
This study aimed to determine whether acute ischemic preconditioning enhances
performance in the Jiu-Jitsu anaerobic performance test and its influence on
physiological responses in Brazilian Jiu-Jitsu fighters. Seventeen male fighters
completed two randomized crossover sessions (ischemic preconditioning and
placebo). The ischemic preconditioning protocol consisted of three cycles of
5-minute occlusion at 220 mm Hg followed by 5-minute reperfusion. Performance
was assessed using the Jiu-Jitsu anaerobic performance test, while physiological
markers included the heart rate, blood lactate, muscle oxygenation,
countermovement jump, rating of perceived exertion, and session rating of
perceived exertion. Ischemic preconditioning increased total repetitions
performed in the Jiu-Jitsu anaerobic performance test (p=0.003) and
enhanced muscle oxygenation (p<0.0001). Under the placebo condition,
the pre-countermovement jump was higher than the post-countermovement jump
(p=0.006). However, under the ischemic preconditioning condition, no
significant difference was observed between pre- and post-countermovement jump
(p=0.99). No significant differences were observed for heart rate or
blood lactate (p>0.05). Additionally, ischemic preconditioning reduced
the session rating of perceived exertion compared to the placebo
(p=0.04), suggesting a lower session rating of perceived exertion. We
concluded that acute ischemic preconditioning induces small but significant
improvements in performance and muscle oxygenation, while reducing fatigue and
session rating of perceived exertion in Brazilian Jiu-Jitsu athletes, supporting
its use as an ergogenic aid in training.
Keywords
Combat sports - occlusion - oxygenation - anaerobic performance
