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Effect of 10 Week Beta-Alanine Supplementation on Competition and Training Performance in Elite Swimmers

Chung, Weiliang, Shaw, Greg, Anderson, Megan E, Pyne, David B, Saunders, Philo U, Bishop, David and Burke, Louise (2012) Effect of 10 Week Beta-Alanine Supplementation on Competition and Training Performance in Elite Swimmers. Nutrients, 4 (10). pp. 1441-1453. ISSN 2072-6643 (online)

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Abstract

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.

Item Type: Article
Uncontrolled Keywords: ResPubID25664, carnosine, physiology, ergogenic aid, swimming, exercise, athlete
Subjects: FOR Classification > 1106 Human Movement and Sports Science
FOR Classification > 1111 Nutrition and Dietetics
Faculty/School/Research Centre/Department > Institute of Sport, Exercise and Active Living (ISEAL)
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Depositing User: Yimin Zeng
Date Deposited: 07 Jan 2014 01:19
Last Modified: 11 Jun 2018 23:33
URI: http://vuir.vu.edu.au/id/eprint/23296
DOI: https://doi.org/10.3390/nu4101441
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Citations in Scopus: 28 - View on Scopus

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