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Effect of Beta-Alanine Supplementation on 2000 m Rowing Ergometer Performance.
MedLine Citation:
PMID:  23239676     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Beta-alanine supplementation has been shown to improve exercise performance in short-term high-intensity efforts. However, whether supplementation with beta-alanine is ergogenic to actual sporting events remains unclear and should be investigated in field testing or race simulations. PURPOSE: The aim of this study was to assess if beta-alanine supplementation could improve 2000 m rowing ergometer performance in well-trained male rowers. METHODS: Participants (n=16) completed duplicate trials (2 x pre-supplementation and 2 x post-supplementation) of a 2000 m rowing ergometer race, separated by 28 days of either beta-alanine (n=7; 80 mg·kg-1BM·day-1) or placebo (n=9; glucose) supplementation. RESULTS: Beta-alanine group (pooled) race times improved by 2.9±4.1 s and placebo group slowed by 1.2±2.9 s, but these results were inconclusive for performance enhancement (p=0.055, ES=0.20, SWC=49% beneficial). Race split times and average power outputs only significantly improved with beta-alanine at the 750 m (time -0.7 s, p=0.01, power +3.6%, p=0.03) and 1000 m (time -0.5 s, p=0.01, power +2.9%, p=0.02) distances. Blood La- and pH values post-race were not different between groups before or after supplementation. CONCLUSIONS: Overall, 28 days of beta-alanine supplementation with 80 mg·kg-1BM·day-1 (~7 g·day-1) did not conclusively improve 2000 m rowing ergometer performance in well trained rowers.
Authors:
Kagan J Ducker; Brian Dawson; Karen E Wallman
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-7
Journal Detail:
Title:  International journal of sport nutrition and exercise metabolism     Volume:  -     ISSN:  1543-2742     ISO Abbreviation:  Int J Sport Nutr Exerc Metab     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100939812     Medline TA:  Int J Sport Nutr Exerc Metab     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
School of Sport Science, Exercise and Health, The University of Western Australia, Crawley, Australia.
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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