Caffeine Supplementation Improves Anaerobic Performance and Neuromuscular Efficiency and Fatigue in Olympic-Level Boxers.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
caffeine supplementation | increase | peak power | Olympic-level boxers | 6.27% | enhanced | #1 |
caffeine supplementation | increase | mean power | Olympic-level boxers | 3.44% | enhanced | #2 |
caffeine supplementation | increase | neuromuscular efficiency | Olympic-level boxers | - | enhanced | #3 |
caffeine supplementation | increase | reaction speed | Olympic-level boxers | - | improved | #4 |
caffeine supplementation | increase | anaerobic performance | Olympic-level boxers | - | improved | #5 |
caffeine supplementation | no change | EMG activity | Olympic-level boxers | - | without affecting | #6 |
caffeine supplementation | no change | fatigue levels in the lower limbs | Olympic-level boxers | - | without affecting | #7 |
BACKGROUND: this study examined the effects of caffeine supplementation on anaerobic performance, neuromuscular efficiency and upper and lower extremities fatigue in Olympic-level boxers. METHODS: Eight male athletes, members of the Spanish National Olympic Team, were enrolled in the study. In a randomized double-blind, placebo-controlled, counterbalanced, crossover design, the athletes completed 2 test sessions after the intake of caffeine (6 mg·kg RESULTS: caffeine enhanced peak power (6.27%, CONCLUSIONS: in these Olympic-level boxers, caffeine supplementation improved anaerobic performance without affecting EMG activity and fatigue levels in the lower limbs. Further benefits observed were enhanced neuromuscular efficiency in some muscles and improved reaction speed.