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Article Title

THE EFFECTS OF CAFFEINE ON REPEATED CYCLE ERGOMETER SPRINT BOUTS

Abstract

Z.B. Wise, M. Neuhauser, J.J. Turner, M. McGrew, & M.M. Lockard

Willamette University, Salem, OR

Caffeine is a popular drug that may be ergogenic for various modes of exercise. PURPOSE: The purpose of this research was to investigate the effect of caffeine on power, work and fatigue index of repeated cycle-ergometer sprint bouts. METHODS: Six Willamette University varsity male soccer players (aged 18.5 ± 1.05 years) consumed placebo or moderate dosage of caffeine (6 mg/kg-1) one hour prior to testing, then performed 20 five-second cycle ergometer sprints, separated by 30-second active rest periods. During the sprint phase, resistance was 7.5% of the participant’s body weight. Active rest periods consisted of pedaling at an intensity of 30 Watts. Outcome measures were mean and peak power, total mechanical work and fatigue index. Participants returned to the laboratory at least 72 hours later for testing in the opposite condition. RESULTS: The caffeine condition testing resulted in 12% greater mean power (614.32 ± 69.66 Watts vs. 542.55 ± 71.87 Watts, p

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