Effect of acute sodium bicarbonate and caffeine co-ingestion on repeated sprint performance in recreationally trained individuals: a randomized controlled trial
Authors
Ferragut Fiol, María del Carmen; Gonzalo Encabo, Paola; López-Samanes , Alvaro; Valadés Cerrato, David; Pérez López, AlbertoIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/60699DOI: 10.1123/ijspp.2023-0256
ISSN: 1555-0265
Date
2024-02-09Bibliographic citation
International Journal of Sports Physiology and Performance, 2024, v. , n. , p. -
Keywords
Sports performance
Sports nutrition
Ergogenic substances
Caffeine
Sodium 58 bicarbonate
Sprint
Description / Notes
24 p.
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Rights
© 2024 Human Kinetics
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Access rights
info:eu-repo/semantics/openAccess
Abstract
Introduction: The acute and isolated ingestion of sodium bicarbonate (NaHCO3) and caffeine (CAF) improves performance and delays fatigue in high-intensity tasks. However, it remains to be elucidated if the coingestion of both dietary supplements stimulates a summative ergogenic effect. This study aimed to examine the effect of the acute coingestion of NaHCO3 and CAF on repeated-sprint performance. Methods: Twenty-five trained participants (age: 23.3 [4.0] y; sex [female/male]: 12/13; body mass: 69.6 [12.5] kg) participated in a randomized, double-blind, placebo (PLA) -controlled, crossover study. Participants were assigned to 4 conditions: (1) NaHCO3 + CAF, (2) NaHCO3, (3) CAF, or (4) PLA. Thus, they ingested 0.3 g/kg of NaHCO3, 3 mg/kg of CAF, or PLA. Then, participants performed 4 Wingate tests (Wt), consisting of a 30-second all-out sprint against an individualized resisted load, interspersed by a 1.5-minute rest period between sprints. Results: Peak (Wpeak) and mean (Wmean) power output revealed a supplement and sprint interaction effect (P = .009 and P = .049, respectively). Compared with PLA, NaHCO3 + CAF and NaHCO3 increased Wpeak performance in Wt 3 (3%, P = .021) and Wt 4 (4.5%, P = .047), while NaHCO3 supplementation increased mean power performance in Wt 3 (4.2%, P = .001). In Wt 1, CAF increased Wpeak (3.2%, P = .054) and reduced time to Wpeak (-8.5%; P = .008). Plasma lactate showed a supplement plus sprint interaction (P < .001) when NaHCO3 was compared with CAF (13%, P = .031) and PLA (23%, P = .021). Conclusion: To summarize, although the isolated ingestion of CAF and NaHCO3 improved repeated-sprint performance, the coingestion of both supplements did not stimulate a synergic ergogenic effect.
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