Acute inorganic nitrate ingestion does not impact oral microbial composition, cognitive function, or high-intensity exercise performance in female team-sport athletes.

Autor: Tan R; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA. rachel.tan@pepperdine.edu., Merrill C; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Riley CF; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Hammer MA; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Kenney RT; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Riley AA; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Li J; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Zink AC; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Karl ST; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Price KM; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Sharabidze LK; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Rowland SN; School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK., Bailey SJ; School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK., Stiemsma LT; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA., Pennell A; Natural Science Division, Pepperdine University, Malibu, CA, 90263, USA.
Jazyk: angličtina
Zdroj: European journal of applied physiology [Eur J Appl Physiol] 2024 Dec; Vol. 124 (12), pp. 3511-3525. Date of Electronic Publication: 2024 Jul 17.
DOI: 10.1007/s00421-024-05552-w
Abstrakt: The purpose of this study was to investigate the effects of acute nitrate (NO 3 - )-rich beetroot juice ingestion on explosive and high-intensity exercise performance, oral microbiota composition, and cognitive flexibility (i.e., function), before and after maximal intermittent running exercise. Fifteen women team-sport athletes were assigned in a randomized, double-blind, crossover design to consume concentrated NO 3 - -depleted beetroot juice (PL; 0.1 mmol NO 3 - ) and NO 3 - -rich beetroot juice (BR; 12.0 mmol NO 3 - ) 2.5 h prior to performing a battery of exercise performance tasks and cognitive testing before and after the Yo-Yo intermittent recovery level 1 (YYIR1) running test. Resting plasma [NO 3 - ] and plasma nitrite ([NO 2 - ]) were elevated following BR (P < 0.001). BR did not impact global composition or relative abundance of taxa in the oral microbiome (P > 0.05) or cognitive flexibility before or after exercise (P > 0.05). There was no significant difference in performance during 20-m (PRE, PL: 4.38 ± 0.27 vs. BR: 4.38 ± 0.32 s; POST, PL: 4.45 ± 0.29 vs. BR: 4.43 ± 0.35 s) and 10-m sprints (PRE, PL 2.78 ± 0.15 vs. BR 2.79 ± 0.18 s; POST, PL: 2.82 ± 0.16 vs. BR: 2.81 ± 0.19 s), isokinetic handgrip dynamometry, medicine ball throw, horizontal countermovement jump, or YYIR1 (PL: 355 ± 163 m vs. BR: 368 ± 184 m) between BR and PL (P > 0.05). These findings indicate that acute dietary NO 3 - may not influence the oral microbiome, explosive and high-intensity exercise performance, or cognitive function in women team-sport athletes.
Competing Interests: Declarations Conflict of interest The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. Ethics statement The studies involving human participants were reviewed and approved by Pepperdine University Institutional Review Board. The patients/participants provided their written informed consent to participate in this study.
(© 2024. The Author(s).)
Databáze: MEDLINE
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