The DOI matches its Crossref record.
Effect of acute induced metabolic alkalosis on 800-m racing time
Abstract
Six trained middle-distance runners wer studied under alkalotic (NaHCO3 ingestion), placebo (CaCO3 ingestion), and control conditions to determine the effect of an acute induced metabolic alkalosis on time to run an 800-m race. Pre-exercise, following NaHCO3 ingestion, pH and standard [HCO3-] were significantly higher. In the alkalotic condition, subjects ran faster (2.9 s) and the corresponding post-exercise values for blood [lactate] and extracellular H+ were higher than in the control and placebo conditions, suggesting an increased anaerobic energy contribution. These results support the speculation that the increase in extracellular buffering following NaHCO3 ingestion facilitated H+ efflux from the cells of working muscle, thereby delaying the decrease in intracellular pH and postponing fatigue. It is concluded that the ingestion of NaHCO3 by trained middle-distance runners prior to an 800-m race has an ergogenic benefit.
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“Sodium bicarbonate ingestion before exercise has a performance-enhancing effect on high-intensity exercise.”
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 Wilkes et al., 1983
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Metadata
- Authors
- WILKES, D., GLEDHILL, N., & SMYTH, R.
- Affiliations
- York University (CA)
- Venue
- Medicine & Science in Sports & Exercise
- Published
- 1983
- Volume
- 15
- Issue
- 4
- Pages
- 277-280
- ISSN
- 0195-9131 (ISSN-L)
- OpenAlex
- W2032643935
- Cited by
- 176
- References
- 0
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 5 · 2019: 2 · 2018: 2 · 2017: 3 · 2016: 3 · 2015: 1 · 2014: 4 · 2013: 6 · 2012: 7
- FWCI
- 5.72
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Medicine & Science in Sports & Exercise (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Health Sciences › Medicine › Physiology (medical) › Cardiovascular and exercise physiology
- Health Sciences › Nursing › Nutrition and Dietetics › Muscle metabolism and nutrition
- Keywords
- metabolic alkalosis, sodium bicarbonate ingestion, middle-distance running, intracellular pH, blood lactate, anaerobic energy contribution, exercise fatigue, ergogenic aids, trained runners
- MeSH terms
- Bicarbonates, Calcium Carbonate, Double-Blind Method, Energy Metabolism, Humans, Hydrogen-Ion Concentration, Male, Random Allocation, Running, Time Factors, Sodium Bicarbonate
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