Effects of 3 mg/kg Body Mass of Caffeine on the Performance of Jiu-Jitsu Elite Athletes |
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Authors: | Marí a Merino-Ferná ndez,Veró nica Girá ldez-Costas,Jaime Gonzá lez-Garcí a,Jorge Gutié rrez-Hellí n,Cristina Gonzá lez-Millá n,Michelle Matos-Duarte,Carlos Ruiz-Moreno |
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Affiliation: | 1.Health Science Faculty, Francisco de Vitoria University, Ctra. Pozuelo-Majadahonda Km 1800, 28223 Madrid, Spain; (M.M.-F.); (J.G.-H.); (C.G.-M.); (M.M.-D.);2.Exercise Physiology Laboratory, Camilo José Cela University, 28692 Madrid, Spain; (V.G.-C.); (J.G.-G.) |
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Abstract: | The effects of caffeine were investigated in judo, boxing, taekwondo and Brazilian jiu-jitsu. However, this substance was never investigated regarding traditional jiu-jitsu. Therefore, the aim of this research was to analyze the effects of caffeine in the Special Judo Fitness Test (SJFT) and technical variables during combat in traditional jiu-jitsu elite athletes. Methods: Twenty-two young professionals of traditional jiu-jitsu, 11 men and 11 women (age = 22 ± 4 (18–33) years, body mass = 66.6 ± 10.8 (46.2–86.1) kg, height = 1.70 ± 0.9 (1.55–1.85) m) with 15 ± 7 years of experience in traditional jiu-jitsu, participated in a double-blind, counterbalanced, crossover study. In two different conditions, the traditional jiu-jitsu athletes ingested 3 mg/kg body mass of caffeine or a placebo. After 60 min, they performed the SJFT test to measure throwing performance, and subsequently, combat to analyze offensive and defensive hitting techniques. Results: Caffeine had a main effect on the number of throws during the SJFT test (P < 0.01). In addition, it was effective in sets 2 (13 ± 2 vs. 14 ± 2; p = 0.01) and 3 (12 ± 2 vs. 13 ± 1; p = 0.03). There was also a main effect during the test on heart rate when caffeine was ingested (F = 12.48, p < 0.01). The effects of caffeine were similar compared to the placebo condition regarding performance during combat both in offensive and defensive fighting variables Conclusions: the pre-exercise ingestion of 3 mg/kg body mass of caffeine increased performance in the SJFT test, decreased fatigue perception, and increased power and endurance perception in professionally traditional jiu-jitsu athletes. However, it did not seem to improve offensive and defensive technical actions during combat. |
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Keywords: | fight caffeine anhydrous judo performance elite athletes |
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