| Effect of Beta-Alanine Supplementation on 2000 m Rowing Ergometer Performance. | |
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MedLine Citation:
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PMID: 23239676 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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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. |
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Authors:
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Kagan J Ducker; Brian Dawson; Karen E Wallman |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-12-7 |
Journal Detail:
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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:
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Created Date: 2012-12-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100939812 Medline TA: Int J Sport Nutr Exerc Metab Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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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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