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Amino Acids. 2012 Jul;43(1):39-47. doi: 10.1007/s00726-012-1268-0. Epub 2012 Mar 21.

Effect of beta-alanine supplementation on repeated sprint performance during the Loughborough Intermittent Shuttle Test.

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1
Sport, Health and Performance Enhancement (SHAPE) Research Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK.

Abstract

The aim of this study was to examine the effect of β-alanine supplementation on repeated sprint performance during an intermittent exercise protocol designed to replicate games play. Sixteen elite and twenty non-elite game players performed the Loughborough Intermittent Shuttle Test (LIST) on two separate occasions. Trials were separated by 4 weeks of supplementation with either β-alanine (BA) or maltodextrin (MD). There was no deterioration in sprint times from Set 1 to Set 6 of the LIST in either group prior to supplementation (elite: P=0.92; non-elite: P=0.12). Neither BA nor MD supplementation affected sprint times. Blood lactate concentrations were elevated during exercise in both groups, with no effect of supplementation. β-Alanine supplementation did not significantly improve sprint performance during the LIST. Neither group showed a performance decrement prior to supplementation, which might have masked any benefit from increased muscle buffering capacity due to β-alanine supplementation.

PMID:
22434182
DOI:
10.1007/s00726-012-1268-0
[Indexed for MEDLINE]

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