Cited by 155Sports Performance and TrainingCardiovascular and exercise physiologyMuscle metabolism and nutrition

Effects of induced metabolic alkalosis on prolonged intermittent-sprint performance

BISHOP, DAVID, CLAUDIUS, BRETT·2005·Medicine & Science in Sports & Exercise

Abstract

Purpose Previous studies have shown that induced metabolic alkalosis, via sodium bicarbonate (NaHCO3) ingestion, can improve short-term, repeated-sprint ability. The purpose of this study was to assess the effects of NaHCO3 ingestion on a prolonged, intermittent-sprint test (IST). Methods Seven female team-sport athletes (mean +/- SD: age = 19 +/- 1 yr, VO2peak = 45.3 +/- 3.1 mL x kg(-1) x min(-1)) volunteered for the study, which had received ethics clearance. The athletes ingested two doses of either 0.2 g x kg(-1) of NaHCO3 or 0.138 g x kg(-1) of NaCl (placebo), in a double-blind, random, counterbalanced order, 90 and 20 min before performing the IST on a cycle ergometer (two 36-min "halves" of repeated approximately 2-min blocks: all-out 4-s sprint, 100 s of active recovery at 35% VO2peak, and 20 s of rest). Capillary blood samples were drawn from the ear lobe before ingestion, and before, during, and after each half of the IST. VO2 was also recorded at regular intervals throughout the IST. Results Resting plasma bicarbonate concentration ([HCO3-]) averaged 22.6 +/- 0.9 mmol x L(-1), and at 90 min post-ingestion was 21.4 +/- 1.5 and 28.9 +/- 2.8 mmol x L-1 for the placebo and NaHCO3 conditions, respectively (P Conclusions The results of this study suggest that NaHCO3 ingestion can improve intermittent-sprint performance and may be a useful supplement for team-sport athletes.

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Crossref · 10.1249/01.mss.0000161803.44656.3c

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Authors
BISHOP, D., & CLAUDIUS, B.
Affiliations
The University of Western Australia (AU)
Venue
Medicine & Science in Sports & Exercise
Published
2005-05
Volume
37
Issue
5
Pages
759-767
ISSN
0195-9131 (ISSN-L)
OpenAlex
W2093437177
Cited by
155
References
26
Citations by year
2026: 5 · 2025: 4 · 2024: 4 · 2023: 4 · 2022: 4 · 2021: 11 · 2020: 13 · 2019: 5 · 2018: 12 · 2017: 5 · 2016: 4 · 2015: 12 · 2014: 5 · 2013: 13 · 2012: 12
FWCI
4.50
Type
journal article
Language
en
Open access
closed
Locations
  • Medicine & Science in Sports & Exercise (publishedVersion)
  • PubMed (publishedVersion)
  • Victoria University Research Repository (Victoria University) (submittedVersion)
  • UWA Profiles and Research Repository (UWA) (submittedVersion)
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, repeated sprint ability, plasma bicarbonate, team sport athletes, endurance performance, active recovery
MeSH terms
Adult, Alkalosis, Bicarbonates, Double-Blind Method, Drug Administration Schedule, Female, Heart Rate, Humans, Hydrogen-Ion Concentration, Oxygen Consumption, Pulmonary Gas Exchange, Running, Ergometry, Sodium Bicarbonate, Lactic Acid

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