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Effect of Sodium Bicarbonate Ingestion on High Intensity Exercise in Moderately Trained Women


McNaughton, LR and Ford, SB and Newbold, CM, Effect of Sodium Bicarbonate Ingestion on High Intensity Exercise in Moderately Trained Women, Journal of Strength and Conditioning Research, 11, (2) pp. 98-102. ISSN 1064-8011 (1997) [Refereed Article]

DOI: doi:10.1519/1533-4287(1997)011<0098:EOSBIO>2.3.CO;2


The aim of this research was to determine whether sodium bicarbonate would improve total work and peak power during maximal cycling ergometer performance in 10 moderately trained women. Each subject undertook 3 max tests on a cycle ergometer: control (C), placebo (P), and bicarbonate (B) trials. For 5 subjects the order was C, B, and P; for the other 5 it was C, P, and B. During all tests, 75 μl of blood was drawn from each subject prior to ingestion of B or P, and again at 30-min intervals starting 90 min prior to the cycle test as well as immediately postexercise and at 1, 3, and 5 min post. Samples were analyzed for blood lactate, pH, blood bicarbonate, and base excess. Subjects rated their perceived exertion on the 20-point Borg scale. Blood bicarbonate was significantly higher prior to exercise in the B trial and was still significantly higher at the end of the test. There were no significant differences in max HR between trials. The amount of work completed in C and P was not different. Peak power was significantly improved in the B trial. Blood lactate in B was significantly higher at both postexercise and 1 min postexercise. Ratings of perceived exertion were significantly greater in B. The results indicate that women athletes can use bicarbonate buffering to improve work and power output during high intensity exercise of 60 sec duration. © 1997 National Strength & Conditioning Association.

Item Details

Item Type:Refereed Article
Research Division:Biomedical and Clinical Sciences
Research Group:Pharmacology and pharmaceutical sciences
Research Field:Pharmacology and pharmaceutical sciences not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:McNaughton, LR (Professor Lars McNaughton)
UTAS Author:Ford, SB (Mr Stephen Barry Ford)
UTAS Author:Newbold, CM (Mr Christian Mawgon Newbold)
ID Code:10319
Year Published:1997
Web of Science® Times Cited:20
Deposited By:Secondary and Post-Compulsory Education
Deposited On:1997-08-01
Last Modified:2011-08-11

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