Sodium bicarbonate ingestion improves repeated high-intensity cycling performance in the heat
Open accessAbstract
The purpose of this study was to investigate the effect of sodium bicarbonate ingestion on performance and recovery of the Wingate test during exercise in the heat. At 30 °C (∼50% relative humidity), ten male team sport athletes (mean values ± SD; age = 22 ± 4 y; body mass = 76 ± 9 kg) completed two 30s Wingate tests using a resistive load of 7.5% of body mass separated by 5 min of active recovery. They consumed either sodium bicarbonate (0.5g·kg−1 body mass) or sodium chloride as a taste-matched placebo (0.2g·kg−1 body mass) divided into 3 doses at 4h intervals on the day of each test. Performance measures included peak power, rate of fatigue and anaerobic capacity whilst physiological measures of capillary pH, bicarbonate, base excess/deficit and lactate were taken at rest and 3 min following each Wingate test. At all time-points (baseline and following both Wingate tests) capillary pH, bicarbonate and base excess/deficit were higher with sodium bicarbonate, whilst lactate was higher following both Wingate tests with sodium bicarbonate (all p < 0.05). Anaerobic capacity was similar during Wingate 1 but was higher with sodium bicarbonate during Wingate 2 (p < 0.05), with peak power (p < 0.05) but not rate of fatigue (p > 0.05) different between the trials during Wingate 2. When performing high-intensity anaerobic exercise in the heat, sodium bicarbonate ingestion improves recovery and repeated exercise performance likely through its known effects for reducing metabolic acidosis.
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The ergogenic effects of sodium bicarbonate are mostly established for exercise tasks of high-intensity that last between 30 s and 12 min.
“Based on a comprehensive review of the international Society of Sports Nutrition position on sodium bicarbonate and exercise performance, the ergogenic effects of sodium bicarbonate are mostly established for exercise tasks of high-intensity that last between 30 s and 12 min (Driller et al., 2012; Mündel, 2018; Grgic et al., 2021; Grgic, 2022).”
From Acute enteric-coated sodium bicarbonate has negligible effect on anaerobic performance but affects metabolomics and attenuates the gastrointestinal response (2022) · cites this paper as Mündel, 2018
The Introduction describes sodium bicarbonate as an ergogenic aid for high-intensity anaerobic exercise, and the Abstract reports improved performance in repeated 30-second Wingate tests. The paper does not establish the claimed range extending to 12 minutes; its tested efforts lasted 30 seconds. (LLM, conf=0.88)
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Grgic, J., Pedisic, Z., Saunders, B., Artioli, G. G., Schoenfeld, B. J., McKenna, M. J., Bishop, D. J., Kreider, R. B., Stout, J. R., Kalman, D. S., et al. (2021) · Journal of the International Society of Sports Nutrition · doi:10.1186/s12970-021-00458-w · Cited by 138 · see citing works
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“…Society of Sports Nutrition position on sodium bicarbonate and exercise performance, the ergogenic effects of sodium bicarbonate are mostly established for exercise tasks of high-intensity that last between 30 s and 12 min (Driller et al., 2012; Mündel, 2018; Grgic et al., 2021; Grgic, 2022).”
Background
- Authors
- Mündel, T.
- Affiliations
- Massey University (NZ)
- Corresponding author
- Mündel, Toby
- ORCID
- Mündel, Toby
- Venue
- Temperature
- Publisher
- Informa UK Limited
- Published
- 2018-03-13
- Volume
- 5
- Issue
- 4
- Pages
- 343-347
- ISSN
- 2332-8940 (ISSN-L)
- 2332-8959
- PMC
- PMC6298489
- OpenAlex
- W2792651871
- Cited by
- 18
- References
- 3
- Citations by year
- 2026: 3 · 2024: 1 · 2023: 3 · 2022: 2 · 2021: 5 · 2020: 1 · 2019: 2 · 2017: 1
- FWCI
- 1.38
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Temperature (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
- Keywords
- sodium bicarbonate ingestion, high-intensity cycling, exercise in the heat, anaerobic capacity, peak power, metabolic acidosis, blood lactate, base excess, Wingate test, team sport athletes
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