Dietary nitrate enhances power output during the early phases of maximal intensity sprint cycling
Year: 2015
Type: article
Abstract: Ingestion of dietary nitrate has shown to improve endurance exercise performance, however effects onshort-term maximal intensity exercise are currently unknown. The study aimed to investigate whethersupplementation with dietary nitrate has an ergogenic effect on sprint cycling exercise. Following a baselinetrial, ten recreationally active males consumed, in a counterbalanced fashion, 0.14 L of either nitrate-richbeetroot juice (8 mmol.NO3-1) or placebo, the day before and 40 min prior to performing a maximal 30 sWingate cycling test. Following nitrate supplementation there was a ‘possible’ increase in mean power (7.95 ± 0.55w.kg-1) during the 30 s sprint compared to control (7.78 ± 0.61 w.kg-1) and placebo conditions (7.63 ± 0.91w.kg-1) (47% chance; 90% CI: -0.09 - 0.43 w.kg-1). On further analysis, via division into 5 s phases;participants experienced ‘likely’ increases in mean power during 5-10 s (77% chance; 90% CI: -0.01 – 0.65w.kg-1) and 10-15 s (81% chance; 90% CI: 0.05 – 0.57 w.kg-1) phases following nitrate supplementationcompared to control and placebo. The consumption of dietary nitrate, seemingly enhanced power outputbetween 5 to 15 s of maximal cycling, this occurred despite nitrate having no distinctive effect on overallcycling performance.
Authors: Lee Corry, Thomas Gee
Language: English
Subfield: Physiology (medical)
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W1874154633