Izvorni znanstveni članak
https://doi.org/10.5671/ca.48.3.7
Caffeine and Sodium Bicarbonate Supplementation Improves Repeated High-Intensity Exercise Performance
Magni Mohr
orcid.org/0000-0002-1749-8533
; Centre of Health Sciences, Faculty of Health, University of the Faroe Islands, Torshavn, Faroe Islands
Sažetak
The effect of caffeine and sodium bicarbonate (NaHCO3) supplementation as recovery promoting nutritional aids after high-intensity exhaustive exercise performance has sparsely studied. This study tests the hypothesis that when caffeine or sodium bicarbonate (NaHCO3 ) are ingested after completion of exhaustive high-intensity exercise, a positive performance effect would be observed in subsequent high-intensity exercise. Healthy males (n=20) were assigned in a single-blind, randomized, counter-balanced design to ingest either 0.3 g.kg–1 body wt of NaHCO3 or 6 mg.kg–1 body wt of caffeine or a placebo after completion of an all-out 2000m rowing exercise (EX1). Participants rested for 90 min before engagement in a second 2000m rowing bout (EX2). Performance in EX2 was reduced (p<0.05) by 5.3±7.0 s compared to EX1 within the placebo trials. However, EX2 performance was unchanged (p>0.05) when NaHCO3 was consumed during the recovery period. In the caffeine trial EX2 performance was 2% better (p<0.05) than the second row within the placebo trial (456.0±17.8 vs. 464.6±21.6 s, respectively). The commencement of EX2 was associated with elevated blood [lactate], with NaHCO3 trials eliciting the highest [lactate], and reduced blood [glucose], apart from caffeine whereby blood [glucose] was maintained. No differences in heart rate of rate of perceived exertion was found between all trials. Caffeine improved same-day performance recovery in 2000m rowing relative to placebo, NaHCO3 supplementation maintained same-day rowing performance. Therefore, these supplements may potentially be beneficial as recovery aids in repeated high-intensity exercise scenarios.
Ključne riječi
2000m rowing, recovery, caffeine, sodium bicarbonate
Hrčak ID:
329771
URI
Datum izdavanja:
1.9.2024.
Posjeta: 61 *