ANALYSIS OF THE CAFFEINE’S ERGOGENIC EFFECT IN ATHLETES OF AMATEUR FOOTBALL (SUB-18) FROM KRAC TEAM FOOTBALL CLUB (PI), SUBMITTED TO AEROBIC TEST

Abstract

This study had as objective to analyze the caffeine’s ergogenic effect in football amateur athletes (sub-18) from KRAC football club (PI) submitted to aerobic test of 2400 meters. Were evaluated fifteen athletes with ages between 15 and 18 years old, in two tests: the first one without supplementation and second one with caffeine supplementation. In the first test, all they executed the 2400m test without distinction among groups; and in the second test all they were distributed between caffeine (CG) and placebo (PG) groups. Were evaluated the anthropometric measures of weight, height and position that each athlete uses to act, and finally the aerobic tests (without and with supplement, respectively) with intervals of one week among tests. Tests were executed in the athletics track from Piauí Federal University, which has 400 meters in length and six lanes of width. Among the searched athletes, placebo members (n=6) obtained better results than caffeine members (n=9), while in relation to the tests without supplementation, both of groups achieved the same evolution of maxim oxygen’s volume, but this little difference was not statistically significant, cause aims just a tendency of athletic improvement with the use of caffeine supplement, as placebo (starch) use. The adopted supplementation was 5mg/kg, based on athletes’ weight average obtained through anthropometric evaluation executed before aerobic tests. This study concluded that with all this aspects, caffeine did not influence significatively the athletes’ income for the improvement of maxim oxygen volume (VO2max). Was observed just a little tendency of improvement to both groups (caffeine and placebo), from none supplemented to the supplemented test.