Facebook
Twitter
LinkedIn
Email
 |
Checking for direct PDF access through Ovid | |
Excerpt
PURPOSE: This study examined the effects of caffeine supplementation on repeated lower-body Wingate performance. METHODS: Ten college-aged subjects (22.4 +/− 1.7 yrs) volunteered to participate in this study. The 5 men and 5 women were considered physically fit and athletic, but none were deemed to be a fit anaerobic athlete. The subjects performed three 30-second Wingate tests (using a Monark 824-E cycle ergometer) with 30 minutes of rest between tests. This sequence was performed on two separate days with either the caffeine treatment (7 mg/kg) or placebo control (vitamin C) ingested 30 minutes prior to the first test on each of the two days. The design of the study was double-blind and the samples for each subject were randomly assigned. The anaerobic indices of peak power (PP), mean power (MP), and fatigue index (FI) were measured during each of the six tests (3 caffeine and 3 placebo) for each subject. RESULTS: ANOVA with repeated measures revealed a significant increase (P<0.05) in MP from 547.9 W to 590.0 W during the third Wingate test under the influence of the treatment. No significance was found among the other 8 variables analyzed. CONCLUSIONS: While these results indicate that caffeine increases MP during a 30-second Wingate test, the lack of a conclusive mechanism highlights the need for additional studies related to caffeine and anaerobic performance. The conclusion is that caffeine may enhance performance in athletic events requiring multiple supramaximal efforts over a relatively short period of time.
