Although some laboratory-based studies show an ergogenic effect with beta-alanine supplementation, there is a lack of field-based research in training and competition settings. Elite/Sub-elite swimmers (n = 23 males and 18 females, age = 21.7 +/- 2.8 years; mean +/- SD) were supplemented with either beta-alanine (4 weeks loading phase of 4.8 g/day and 3.2 g/day thereafter) or placebo for 10 weeks. Competition performance times were log-transformed, then evaluated before (National Championships) and after (international or national selection meet) supplementation. Swimmers also completed three standardized training sets at baseline, 4 and 10 weeks of supplementation. Capillary blood was analyzed for pH, bicarbonate and lactate concentration in both competition and training. There was an unclear effect (0.4%; +/-0.8%, mean, +/-90% confidence limits) of beta-alanine on competition performance compared to placebo with no meaningful changes in blood chemistry. While there was a transient improvement on training performance after 4 weeks with beta-alanine (-1.3%; +/-1.0%), there was an unclear effect at ten weeks (-0.2%; +/-1.5%) and no meaningful changes in blood chemistry. Beta-alanine supplementation appears to have minimal effect on swimming performance in non-laboratory controlled real-world training and competition settings. © 2012 by the authors; licensee MDPI, Basel, Switzerland.
CITATION STYLE
W., C., G., S., M.E., A., D.B., P., P.U., S., & D.J., B. (2012). Effect of 10 week beta-alanine supplementation on competition and training performance in elite swimmers. Nutrients. D. B. Pyne, Department of Physiology, Australian Institute of Sport, Leverrier Crescent, Bruce, Canberra, ACT 2617, Australia. E-mail: david.pyne@ausport.gov.au: MDPI AG (Postfach, Basel CH-4005, Switzerland). Retrieved from http://www.mdpi.com/2072-6643/4/10/1441/pdf
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