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01-02-2009 | Original Article

The effects of beta-alanine supplementation and high-intensity interval training on neuromuscular fatigue and muscle function

Authors: Abbie E. Smith, Jordan R. Moon, Kristina L. Kendall, Jennifer L. Graef, Christopher M. Lockwood, Ashley A. Walter, Travis W. Beck, Joel T. Cramer, Jeffrey R. Stout

Published in: European Journal of Applied Physiology | Issue 3/2009

Abstract

The purpose of this study was to determine the effects of beta-alanine supplementation and high-intensity interval training (HIIT) on electromyographic fatigue threshold (EMG_FT) and efficiency of electrical activity (EEA). A total of 46 men completed four, 2-min work bouts on a cycle ergometer. Using bipolar surface electrodes, the EMG amplitude was averaged and plotted over the 2-min. The resulting slopes were used to calculate EMG_FT and EEA. Following initial testing, all participants were randomly assigned to either placebo (PL; n = 18), beta-alanine (BA; n = 18) or control groups (CON; n = 10). Following randomization, participants engaged in 6 weeks of HIIT training. Significant improvements in EMG_FT and EEA resulted for both training groups. In conclusion, HIIT appeared to be the primary stimulus effecting EMG_FT or EEA, suggesting adaptations from HIIT may be more influential than increasing skeletal muscle carnosine levels on delaying fatigue in recreationally active men.

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Title: The effects of beta-alanine supplementation and high-intensity interval training on neuromuscular fatigue and muscle function
Authors: Abbie E. Smith
Jordan R. Moon
Kristina L. Kendall
Jennifer L. Graef
Christopher M. Lockwood
Ashley A. Walter
Travis W. Beck
Joel T. Cramer
Jeffrey R. Stout
Publication date: 01-02-2009
Publisher: Springer-Verlag
Published in: European Journal of Applied Physiology / Issue 3/2009
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI: https://doi.org/10.1007/s00421-008-0911-7

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The effects of beta-alanine supplementation and high-intensity interval training on neuromuscular fatigue and muscle function

Abstract

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Abstract

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