HIGH-VELOCITY INTERMITTENT RUNNING: EFFECTS OF BETA-ALANINE SUPPLEMENTATION

    Authors

    A. E. Smith-Ryan; D. H. Fukuda; J. R. Stout;K. L. Kendall

    Comments

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    Abbreviated Journal Title

    J. Strength Cond. Res.

    Keywords

    critical velocity; anaerobic running capacity; ergogenic aid; sex; supplement; HIGH-INTENSITY EXERCISE; MUSCLE CARNOSINE; SKELETAL-MUSCLE; ENDURANCE; PERFORMANCE; NEUROMUSCULAR FATIGUE; ANAEROBIC PERFORMANCE; SPRINT; PERFORMANCE; WORK CAPACITY; AMINO-ACIDS; CREATINE; Sport Sciences

    Abstract

    Smith-Ryan, AE, Fukuda, DH, Stout, JR, and Kendall, KL. High-velocity intermittent running: effects of beta-alanine supplementation. J Strength Cond Res 26(10): 2798-2805, 2012-The use of beta-alanine in sport is widespread. However, the effects across all sport activities are inconclusive. The purpose of this study was to evaluate the effects of beta-alanine supplementation on high-intensity running performance and critical velocity (CV) and anaerobic running capacity (ARC). Fifty recreationally trained men were randomly assigned, in a double-blind fashion, to a beta-alanine group (BA, 2 x 800 mg tablets, 3 times daily; CarnoSyn; n = 26) or placebo group (PL, 2 x 800 mg maltodextrin tablets, 3 times daily; n = 24). A graded exercise test (GXT) was performed to establish peak velocity (PV). Three high-speed runs to exhaustion were performed at 110, 100, and 90% of PV, with 15 minutes of rest between bouts. The distances achieved were plotted over the time to exhaustion (TTE). Linear regression was used to determine the slope (CV) and gamma-intercept (ARC) of these relationships to assess aerobic and anaerobic performances, respectively. There were no significant treatment effects (p > 0.05) on CV or ARC for either men or women. Additionally, no TTE effects were evident for bouts at 90-110% PV lasting 1.95-5.06 minutes. There seems to be no ergogenic effect of beta-alanine supplementation on CV, ARC, or high-intensity running lasting approximately 2-5 minutes in either men or women in the current study.

    Journal Title

    Journal of Strength and Conditioning Research

    Volume

    26

    Issue/Number

    10

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    2798

    Last Page

    2805

    WOS Identifier

    WOS:000309553800024

    ISSN

    1064-8011

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