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Abstract

Aim: This study was designed to determine whether caffeine supplementation applied at different times has an effect on vertical jump and long jump performance.
Method: The study group consists of a total of 30 healthy and volunteer elite male athletes. Caffeine supplementation was applied to the elite athletes participating in the study in two separate periods, and three groups were randomly formed as the first group (Experiment 1), the second group (Experiment 2), and the no application (Placebo) group. Athletes in the (Experimental 1) group were given caffeine supplementation, 60 minutes before the measurements, and the athletes in the (Experiment 2) group were given 6 mg/kg powdered caffeine supplement, mixed with 250 ml of water, 120 minutes before the measurements. Only water was administered to the (placebo) group. In the study, the smart speed lite system was used to determine the vertical jump, and the standing long jump test protocols were used to determine the long jump. Differences between groups were determined by using a post-hoc LSD test together with the one-way analysis of variance in (One-Way-ANOVA-post-hoc LSD) in accordance with the experimental design of the study.
Results: Considering the vertical jump and long jump pre-test post-test performances of the participants, there was a general increase in all groups. There was no statistically significant difference between the posttest-pretest difference scores of vertical jump and standing long jump performance values ​​(p>0.05).
Conclusion: Both results were found to have low effect size values.