Task: Answer Verification
Input (English): Question: Does coinciding exercise with peak serum caffeine improve cycling performance?
Answer: In contrast to coinciding peak serum caffeine concentration with exercise onset, caffeine consumed 60 min prior to exercise resulted in significant improvements in 40 km time trial performance. The ergogenic effect of caffeine was not found to be related to peak caffeine concentration in the blood at the onset of endurance exercise.
Output (English): no