Acute caffeine supplementation offsets the impairment in 10-km running performance following one night of partial sleep deprivation: a randomized controlled crossover trial.
Study Goal
The researchers aimed to determine whether acute caffeine supplementation could counteract the negative effects of one-night partial sleep deprivation on endurance exercise performance in recreational runners.
Results Summary
Caffeine improved 10-km running performance by 7.7% after partial sleep deprivation and by 2.8% after normal sleep, effectively offsetting the performance decline caused by sleep deprivation. Performance with caffeine after sleep deprivation was comparable to performance with placebo after normal sleep.
Population
Ten healthy recreational male runners (age 27 ± 6 years).
Effective Dosage
Not specified in the abstract.
Duration
Acute (single-dose) intervention.
Interactions
None mentioned.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
partial sleep deprivation | decrease | TT performance | ten healthy recreational male runners | 5% | resulted in compromised | #1 |
caffeine | increase | TT performance | ten healthy recreational male runners | 7.7% | improved | #2 |
caffeine | increase | TT performance | ten healthy recreational male runners | 2.8% | improved | #3 |
caffeine | increase | blood glucose concentrations at post-exercise | ten healthy recreational male runners | - | were higher | #4 |
caffeine | increase | lactate concentrations at post-exercise | ten healthy recreational male runners | - | were higher | #5 |
caffeine | increase | glycerol concentrations at post-exercise | ten healthy recreational male runners | - | were higher | #6 |
caffeine | increase | heart rate during TT | ten healthy recreational male runners | - | were higher | #7 |
caffeine | increase | speed/RPE ratio during TT | ten healthy recreational male runners | - | were higher | #8 |
caffeine supplementation | increase | 10-km running performance | ten healthy recreational male runners | - | offsets the negative effects | #9 |
INTRODUCTION: Whether acute caffeine supplementation can offset the negative effects of one-night of partial sleep deprivation (PSD) on endurance exercise performance is currently unknown. METHODS: Ten healthy recreational male runners (age: 27 ± 6 years; RESULTS: PSD resulted in compromised TT performance compared to NS in the placebo conditions by 5% (51.9 ± 7.7 vs. 49.4 ± 6.9 min, p = 0.001). Caffeine improved TT performance compared to placebo following both PSD by 7.7% (PSD-Caf: 47.9 ± 7.3 min vs. PSD-Pla: 51.9 ± 7.7 min, p = 0.007) and NS by 2.8% (NS-Caf: 48.0 ± 6.4 min vs. NS-Pla: 49.4 ± 6.9 min, p = 0.049). TT performance following PSD-Caf was not different from either NS-Pla or NS-Caf (p = 0.185 and p = 0.891, respectively). Blood glucose, lactate, and glycerol concentrations at post-exercise, as well as heart rate and the speed/RPE ratio during TT, were higher in caffeine trials compared to placebo. CONCLUSIONS: Caffeine supplementation offsets the negative effects of one-night PSD on 10-km running performance.