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

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

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

DOI 10.1249/00005768-198315040-00004

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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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Authors: WILKES, D., GLEDHILL, N., & SMYTH, R.
Affiliations: York University (CA)
Venue: Medicine & Science in Sports & Exercise
Publisher: Ovid Technologies (Wolters Kluwer Health)
Published: 1983
Volume: 15
Issue: 4
Pages: 277-280
ISSN: 0195-9131 (ISSN-L)
DOI: 10.1249/00005768-198315040-00004
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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Effect of acute induced metabolic alkalosis on 800-m racing time

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