Supplementation of caffeine and sodium bicarbonate together could not improve performance and performance-related factors in CrossFit participants: a randomized, double-blind, placebo-controlled study.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
caffeine (CAF) | no change | performance during the Cindy protocol | CrossFit participants | no significant change | not significantly improved | #1 |
sodium bicarbonate (NaHCO3) | no change | performance during the Cindy protocol | CrossFit participants | no significant change | not significantly improved | #2 |
CAF + NaHCO3 | increase | performance during the Cindy protocol | CrossFit participants | - | significantly improved | #3 |
BACKGROUND: CrossFit includes weightlifting, powerlifting, and gymnastics in various combinations of overloads and repetitions with limited rest periods or no rest between training sets. Due to the novelty of CrossFit, there are few studies on the effect of nutritional strategies on the acute response to this type of sports activity. This study examined the effect of caffeine (CAF) and sodium bicarbonate (NaHCO METHOD: In a double-blind, crossover, randomized, placebo-controlled trial, 20 CrossFit participants underwent five experimental conditions, including control (CON), placebo (PLA), CAF, NaHCO RESULTS: The performance of CrossFit participants during the Cindy protocol was not significantly improved following CAF, NaHCO CONCLUSION: CAF + NaHCO