Quick Answer
Caffeine Exercise Performance Meta-Analysis has evidence relevant to safety, limits, and clinician-discussion contexts, but conclusions should stay close to the cited sources. One representative finding is: Consistent with these findings, in-competition urine monitoring data show that median urinary caffeine concentration in aquatics increased from 0.1 µg/mL in 2004 to 0.7 µg/mL in 2015 [], suggesting an increase in caffeine use.
Key Takeaways
- 01Consistent with these findings, in-competition urine monitoring data show that median urinary caffeine concentration in aquatics increased from 0.1 µg/mL in 2004 to 0.7 µg/mL in 2015 [], suggesting an increase in caffeine use. [Wang Ziyu (2026)]
- 02Available evidence supports caffeine’s ergogenic effects in various sports disciplines and competitive scenarios [,]. [Wang Ziyu (2026)]
- 03This imprecision reflects the very limited evidence base, as the analyses were based on only two studies for the 25-m distance and three studies for the 50-m distance. [Wang Ziyu (2026)]
- 041 2 3 4 5 5 6 7 8 9 10 11 The main objective in competitive swimming is to complete the race as quickly as possible []. [Wang Ziyu (2026)]
The current Migaku evidence database contains 2 reusable source documents for Caffeine Exercise Performance Meta-Analysis. This answer focuses on safety, limits, and clinician-discussion contexts.
- Consistent with these findings, in-competition urine monitoring data show that median urinary caffeine concentration in aquatics increased from 0.1 µg/mL in 2004 to 0.7 µg/mL in 2015 [], suggesting an increase in caffeine use. [Wang Ziyu (2026); evidence level 1]
- Available evidence supports caffeine’s ergogenic effects in various sports disciplines and competitive scenarios [,]. [Wang Ziyu (2026); evidence level 1]
- This imprecision reflects the very limited evidence base, as the analyses were based on only two studies for the 25-m distance and three studies for the 50-m distance. [Wang Ziyu (2026); evidence level 1]
- 1 2 3 4 5 5 6 7 8 9 10 11 The main objective in competitive swimming is to complete the race as quickly as possible []. [Wang Ziyu (2026); evidence level 1]
- This study examined the effects of caffeine consumption on endurance exercise performance, and the influence of CYP1A2 gene polymorphisms in caffeine pharmacokinetics and exercise performance. [Masters C (2026); evidence level 4]
Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording.
This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.
Sources