Papers/PMID:42086212
Napping, Caffeine, and Their Combination Enhanced Explosivity and Repeated-Sprint Performance: A Randomized Placebo-Controlled Study.
International journal of sport nutrition and exercise metabolism2026The record
1 finding · 1 compound · 1 endpoint · 1 null
What it reported
How to read these marksEvery finding here is a null result.
What did not
1 finding
caffeine — no detected effect on choice reaction time
Evidence strength: very limited.FindingNull result“No significant effects of CAF, NAP, and CAF + NAP on simple reaction time, choice reaction time, and Epworth Sleepiness Scale were found.”
Quoted verbatim from Napping, Caffeine, and Their Combination Enhanced Explosivity and Repeated-Sprint Performance: A Randomized Placebo-Controlled Study.. - Study
- crossover
- Dose
- Caffeine 5 mg/kg, single acute dose, ingested in the early evening (~18:00)
- Population
- 13 physical education students; randomized, counterbalanced, double-blind 4-condition crossover (PLA, NAP, CAF, NAP+CAF)
Napping, Caffeine, and Their Combination Enhanced Explosivity and Repeated-Sprint Performance: A Randomized Placebo-Controlled Study.2026PMID:4208621210.1123/ijsnem.2025-0217Permalink