Discussion
RPE
The main findings of this study were that caffeine ingestion via caffeinated chewing gum significantly improved the performance of the Romanian deadlift on the flywheel exercise compared to placebo in peak concentric power, peak eccentric power, average power and total work. However, there were no significant differences between the two trials in average force, RPE and heart rate.In previous studies, caffeine was mainly ingested in the form of capsules, which took approximately 45–60 min to reach high concentrations in the bloodLopes-Silva has demonstrated that caffeine intake can improve intermittent upper body strength endurance performance in combat sports athletesIn the recent literature, only one study was found in which inertial flywheel resistance performance was measured with 6 mg/kg caffeine supplementation, and the study found significant improvements in total mean and peak power, and centripetal and centrifugal mean and peak powerEven though, the effect of caffeinated chewing gum on the performance of the Romanian deadlift on a flywheel is still unclear. The flywheel training device is a method specifically designed for eccentric training