The effect of beta-alanine and caffeine supplementation for four weeks on neuromuscular fatigue and stress perception of elite male karate athletes
Poster Presentation
Paper ID : 2101-SSRC
Authors
1دانشجو کارشانسی ارشد فیزیولوژی کاربردی دانشگاه شهرکرد
2دانشگاه شهرکرد
3دانشیار دانشگاه شهرکرد
Abstract
Abstract
Background: Beta-alanine and caffeine supplements are well established as energizing supplements in a wide range of sports. However, their use together in martial arts, especially karate, has been less investigated. Therefore, the aim of this study is the chronic use of beta-alanine supplement separately or together with caffeine supplement on neuromuscular fatigue and stress perception of professional karate practitioners.
Methodology: The current research is of a developmental type and its method is semi-experimental and double-blind with the aim of investigating the effect of 4 weeks of beta-alanine supplementation and placebo in parallel groups. 30 athletes trained in karate at the level of the country's league were randomly placed in three parallel groups and for 4 weeks they consumed 6.4 grams of beta-alanine supplement or placebo and 6 mg per kilogram of body weight. Neuromuscular fatigue and stress perception of athletes were measured using maximum height jump and Borg's stress perception index before and after four weeks of the protocol.
Results: A significant difference in the maximum height jump was observed in the beta-alanine supplement group (P=0.021) and beta-alanine + caffeine (P=0.038) in the pre-test compared to the post-test of the subjects. Although no significant difference was observed in the placebo group (P=0.12). There was no significant difference in the Borg index in the placebo group (P=0.182), beta-alanine + caffeine supplement (P=0.210) and beta-alanine supplement (P=0.210) in the pre-test compared to the post-test of the subjects.
Conclusion: Taking beta-alanine and caffeine supplements can improve the physical performance of karate practitioners, while it has no effect on reducing the perception of training pressure.
Background: Beta-alanine and caffeine supplements are well established as energizing supplements in a wide range of sports. However, their use together in martial arts, especially karate, has been less investigated. Therefore, the aim of this study is the chronic use of beta-alanine supplement separately or together with caffeine supplement on neuromuscular fatigue and stress perception of professional karate practitioners.
Methodology: The current research is of a developmental type and its method is semi-experimental and double-blind with the aim of investigating the effect of 4 weeks of beta-alanine supplementation and placebo in parallel groups. 30 athletes trained in karate at the level of the country's league were randomly placed in three parallel groups and for 4 weeks they consumed 6.4 grams of beta-alanine supplement or placebo and 6 mg per kilogram of body weight. Neuromuscular fatigue and stress perception of athletes were measured using maximum height jump and Borg's stress perception index before and after four weeks of the protocol.
Results: A significant difference in the maximum height jump was observed in the beta-alanine supplement group (P=0.021) and beta-alanine + caffeine (P=0.038) in the pre-test compared to the post-test of the subjects. Although no significant difference was observed in the placebo group (P=0.12). There was no significant difference in the Borg index in the placebo group (P=0.182), beta-alanine + caffeine supplement (P=0.210) and beta-alanine supplement (P=0.210) in the pre-test compared to the post-test of the subjects.
Conclusion: Taking beta-alanine and caffeine supplements can improve the physical performance of karate practitioners, while it has no effect on reducing the perception of training pressure.
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