Original Article

Amino Acids

, Volume 43, Issue 1, pp 39-47

First online:

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

  • Bryan SaundersAffiliated withSport, Health and Performance Enhancement (SHAPE) Research Group, School of Science and Technology, Nottingham Trent University
  • , Craig SaleAffiliated withSport, Health and Performance Enhancement (SHAPE) Research Group, School of Science and Technology, Nottingham Trent University
  • , Roger C. HarrisAffiliated withJunipa Ltd
  • , Caroline SunderlandAffiliated withSport, Health and Performance Enhancement (SHAPE) Research Group, School of Science and Technology, Nottingham Trent University Email author 

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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.

Keywords

Beta-alanine Carnosine Intermittent exercise Repeated sprint performance