Caffeine Combined With Sodium Bicarbonate Improves Pacing and Overall Performance During a High-Intensity Time Trial

Correia-Oliveira, Carlos Rafaell; Franchini, Emerson

doi:10.1080/02701367.2022.2031847

Research Quarterly for Exercise and Sport

2022

DOI: 10.1080/02701367.2022.2031847

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Caffeine Combined With Sodium Bicarbonate Improves Pacing and Overall Performance During a High-Intensity Time Trial

Carlos Rafaell Correia-Oliveira

Emerson Franchini

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2024

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Cited by 2 publications

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Active ischemic pre‐conditioning does not additively improve short‐term high‐intensity cycling performance when combined with caffeine ingestion in trained young men

Jessen,

Zeuthen,

Sommer Jeppesen

et al. 2024

European Journal of Sport Science

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We investigated the effect of ischemic preconditioning (IPC) with and without caffeine supplementation on mean power output (MPO) during a 4‐min cycling time‐trial (TT). In a double‐blinded, randomized, crossover‐design, 11 trained men performed a TT on 4 days separated by ∼1 week. One hour before TT, participants ingested either caffeine (3 mg kg bw−1) or placebo pills, after which femoral blood‐flow was either restricted with occlusion cuffs inflated to ∼180 mmHg (IPC), or sham‐restricted (0–10 mmHg; Sham) during 3 × 2‐min low‐intensity cycling (10% of incremental peak power output). Then, participants performed a standardized warm‐up followed by the TT. Plasma lactate and K+ concentrations and ratings of perceived exertion (RPE) were measured throughout trials. TT MPO was 382 ± 17 W in Placebo + Sham and not different from Placebo + IPC (−1 W; 95% CI: −9 to 7; p = 0.848; d: 0.06), whereas MPO was higher with Caffeine + Sham (+6W; 95% CI: −2 to 14; p = 0.115; d: 0.49) and Caffeine + IPC (+8 W; 95% CI: 2–13; p = 0.019; d: 0.79) versus Placebo + Sham. MPO differences were attributed to caffeine (caffeine main‐effect: +7 W; 95% CI: 2–13; p = 0.015; d: 0.54. IPC main‐effect: 0 W; 95% CI: −6 to 7; p = 0.891; d: 0.03; caffeine × IPC interaction‐effect: p = 0.580; d: 0.17). TT RPE and plasma variables were not different between treatments. In conlcusion, IPC with co‐ingestion of placebo does not improve short‐term high‐intensity performance in trained men versus a double‐placebo control (Placebo + Sham) and does not additively enhance performance with caffeine. These data do not support IPC as a useful strategy for athletes prior to competition but confirms caffeine's performance‐enhancing effect.

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Active ischemic pre‐conditioning does not additively improve short‐term high‐intensity cycling performance when combined with caffeine ingestion in trained young men

Jessen,

Zeuthen,

Sommer Jeppesen

et al. 2024

European Journal of Sport Science

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Effect of Acute Sodium Bicarbonate and Caffeine Coingestion on Repeated-Sprint Performance in Recreationally Trained Individuals: A Randomized Controlled Trial

Ferragut,

Gonzalo-Encabo,

López-Samanes

et al. 2024

International Journal of Sports Physiology and Performance

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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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Caffeine Combined With Sodium Bicarbonate Improves Pacing and Overall Performance During a High-Intensity Time Trial

Cited by 2 publications

References 51 publications

Active ischemic pre‐conditioning does not additively improve short‐term high‐intensity cycling performance when combined with caffeine ingestion in trained young men

Active ischemic pre‐conditioning does not additively improve short‐term high‐intensity cycling performance when combined with caffeine ingestion in trained young men

Effect of Acute Sodium Bicarbonate and Caffeine Coingestion on Repeated-Sprint Performance in Recreationally Trained Individuals: A Randomized Controlled Trial

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