The Repeatability of the Effect of Caffeine Supplementation on Submaximal Physiological Responses and Cycling Time Trial Performance

Launched by ST. MARY'S UNIVERSITY, TWICKENHAM · Apr 11, 2025

Keywords

ClinConnect Summary

This clinical trial is studying how caffeine affects cycling performance in trained male cyclists. Specifically, researchers want to find out if taking a moderate amount of caffeine can consistently improve cycling times in multiple trials. They will also look at whether a person's genetic makeup, particularly a gene called CYP1A2, might influence how well they respond to caffeine. The goal is to help identify who benefits from caffeine and who does not.

To participate in this study, you must be a male cyclist aged 18 to 35 and able to complete a 20-kilometer cycling trial at a speed of at least 30 kilometers per hour. If you join, you'll take caffeine before cycling and then your performance will be measured to see how it changes over different trials. This research could provide valuable insights into how caffeine works for athletes and help tailor supplementation strategies for better performance.

Gender

MALE

Eligibility criteria

• Inclusion Criteria:
• • To be considered for inclusion in the study, participants must be regular cyclists, between 18 and 35 years of age, capable of completing a 20 km cycling time trial at a minimum speed of 30 km/h (arbitrary inclusion criteria to ensure a sufficient standard of athlete).
• Exclusion Criteria:
• • -