Cited by 176Sports Performance and TrainingCardiovascular and exercise physiologyMuscle metabolism and nutrition

Effect of acute induced metabolic alkalosis on 800-m racing time

WILKES, D., GLEDHILL, N., SMYTH, R.·1983·Medicine & Science in Sports & Exercise

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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Crossref · 10.1249/00005768-198315040-00004

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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 › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › 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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