2015
Sodium Bicarbonate, Caffeine, and Their Combination Does Not Enhance Repeated 200-m Freestyle Performance
KUMSTÁT, Michal; Ondřej ŠIMKO a Tomáš HLINSKÝZákladní údaje
Originální název
Sodium Bicarbonate, Caffeine, and Their Combination Does Not Enhance Repeated 200-m Freestyle Performance
Autoři
Vydání
10th International Conference on Kinanthropology, 2015
Další údaje
Jazyk
angličtina
Typ výsledku
Konferenční abstrakt
Obor
Sport a aktivity volného času
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14510/15:00085895
Organizační jednotka
Fakulta sportovních studií
ISBN
978-80-210-8029-4
Klíčová slova anglicky
dietary supplements; ergogenic aid; swimming; gastrointestinal distress
Změněno: 13. 1. 2016 13:53, doc. Mgr. Michal Kumstát, Ph.D.
Anotace
V originále
Ingestion of sodium bicarbonate (NaHCO3) before short-term, high-intensity exercise has previously been found to enhance performance in repeated exercise bouts. The benefits of caffeine ingestion before high-intensity exercise appear to be limited. Not much is known about potential synergy between both supplements. The aim of this study was to investigate the effects of NaHCO3, caffeine, and their combination on repeated 200-m swimming freestyle performance. Seven elite male freestyle swimmers ingested NaHCO3 (0.3 g/kg; B), caffeine (3 mg/kg; C), a combination of both (B+C), and placebo (P, lactose) on 4 separate occasions. A supplementation was orally administered in a double-blind randomized research manner 90 min before completing 2 maximal 200-m freestyle time trials (TT1 and TT2) separated by 15 min. No significant treatment effect was observed in the drop-off in performance time between B, C, B+C and P. The findings suggest that the ergogenic benefit of taking B, C or combination for repeated 200-m swimming performance is to be questioned. A small performance increase is mainly attributed to poor gastrointestinal tolerance of dietary supplements.