Oarswomen (N = 6) performed three familiarization trials and three experimental trials, three to seven days apart, of a 2000-m trial on an air-braked ergometer. In the experimental trials, a placebo or 6 or 9 mg/kg of caffeine was ingested one hour before each exercise. Trials were preceded by 24 hours of dietary and training control.
Performance was significantly improved under the 9 mg/kg condition but not the 6 mg/kg condition. A major effect was observed in the first 500-m of the performance.
Implication. Higher doses of caffeine generally improve rowing performances in females. It is the early stages of performance that are most affected.