![]() To date, the studies examining the ergogenic effects of caffeine in judo used caffeine capsules or caffeine dissolved in water. Additionally, there is a need of performing several judo combats within the same competition day. The use of caffeinated chewing gum in judo may be more beneficial than the use of caffeine capsules because judo tournaments consist of elimination rounds habitually performed without a fixed schedule. ĭespite the evidence of ergogenic effects of caffeinated chewing gum, there is no study testing the efficacy of this form of caffeine administration in combat sports such as judo. Regarding this issue, the use of caffeinated chewing gum in doses between 2 and 6 mg/kg has been found effective in increasing performance in several types of exercise, such as cycling, team sports-specific tests, endurance running and jumping performance although this is not always the case. This form of caffeine absorption may minimize the risk of gastrointestinal disorders in athletes. Moreover, chewing gum allows caffeine to be absorbed directly into the bloodstream through the buccal mucosa, thereby bypassing hepatic metabolism. Caffeine via chewing gum offers a different pharmacokinetic profile over the ingestion of caffeine in capsules, which results in an earlier increase in blood plasma caffeine concentration, usually between 5 and 15 min from intake. Interestingly, an alternative method of caffeine delivery via chewing gum may provide an advantage over traditional forms of caffeine administration. However, in the sport setting, caffeine is generally consumed in the form of caffeinated beverages such as coffee or tea, pre-work out supplements or in capsules/pills, although there are several other sources of caffeine. ![]() In most previous investigations confirming the ergogenic effects of caffeine in sports performance, this stimulant was provided in doses from 3 to 9 mg per kg of body mass (i.e., mg/kg) in the form of anhydrous caffeine administered in a gelatin capsules. Moreover, the ergogenic effects of caffeine have been observed in intermittent sport disciplines, such as team sports and combat sports, which require a substantial contribution from both oxidative and non-oxidative metabolism in addition to sport-specific technical and tactical skills. Indeed, recent scientific reviews and meta-analyses confirm the benefits of this substance on various types of exercise including aerobic-based, anaerobic-based, and strength/power exercise activities. The results of the current study indicate that the use of caffeinated chewing gum in a dose up to 5.4 mg/kg of caffeine did not increase performance during repeated SJFTs.Ĭaffeine is recognized as the most commonly used psychoactive substance in the world and is widely utilized by elite athletes as an ergogenic aid to increase physical performance during training and competition. A two-way repeated measures ANOVA indicated no significant substance × time interaction effect as well as no main effect of caffeine for SJFT performance, SJFT index, blood lactate concentration, heart rate or rating of perceived exertion. Each gum was ingested 15 min before performing two Special Judo Fitness Test (SJFT) which were separated by 4 min of combat activity. Each athlete performed three identical experimental sessions after: (a) ingestion of two non-caffeinated chewing gums (P + P) (b) a caffeinated chewing gum and a placebo chewing gum (C + P ~2.7 mg/kg) (c) two caffeinated chewing gums (C + C ~5.4 mg/kg). Participants were moderate caffeine consumers (3.1 mg/kg/day). ![]() Nine male elite judo athletes of the Polish national team (23.7 ± 4.4 years, body mass: 73.5 ± 7.4 kg) participated in a randomized, crossover, placebo-controlled and double-blind experiment. The main goal of this study was to assess the effect of acute ingestion of a caffeinated chewing gum on the results of the special judo fitness test (SJFT). However, no previous investigation has tested the effectiveness of caffeinated chewing gum as the form of caffeine administration for judoists. ![]() Previous investigations have found positive effects of acute ingestion of capsules containing 4-to-9 mg of caffeine per kg of body mass on several aspects of judo performance.
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