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Study note

Effects of caffeine and its metabolites, theobromine and theophylline, on performance and physiological parameters in cyclists: A randomized, double-blind, placebo-controlled, crossover trial.

Updated Oct 16, 2026

Human researchClinical nutrition ESPEN2025Read the source on PubMed

From the authors’ conclusion

“These results suggest that although caffeine metabolites influence some physiological responses, the ergogenic benefits of caffeine remain robust, highlighting its role in enhancing performance…”

A short excerpt, not the complete finding. Read the linked abstract for the comparison, measurements and context.

Publication details
Record
PubMed 40850526
Publication types
Randomized Controlled Trial
Indexed subjects
Lactic Acid · Caffeine · Theobromine · Theophylline · Cross-Over Studies
Source record checked
2026-10-16

Publication type and subject indexing describe the record; they are not a quality grade or proof of a benefit. An abstract does not replace a review of the full methods and results.

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Sources