SciELO - Scientific Electronic Library Online

 
vol.36 issue3Cross-cultural study of the different components of body dissatisfaction in community samples from Spain and ChileEvolution in anthropometric variables related to training and nutritional parameters in ultra-endurance mountain runners author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Nutrición Hospitalaria

On-line version ISSN 1699-5198Print version ISSN 0212-1611

Abstract

HUERTA OJEDA, Álvaro et al. Effects of acute supplementation with beta-alanine on a limited time test at maximum aerobic speed on endurance athletes. Nutr. Hosp. [online]. 2019, vol.36, n.3, pp.698-705.  Epub Feb 17, 2020. ISSN 1699-5198.  http://dx.doi.org/10.20960/nh.02310.

Introduction:

the beta-alanine (BA) is one of the ergogenic aid most used by athletes, but the majority of the studies center the research on chronic supplementation.

Objectives:

to determine the acute effect of BA supplementation on a limited time test (LTT) at maximum aerobic speed (MAS) on endurance athletes.

Material and method:

eleven endurance athletes (VO2max 61.6 ± 9.5 mLO2·kg-1·min-1) were part of the study. The study consisted of a double-blind, cross-over intra-subject design, and the BA supplementation was 30 mg·kg-1 or placebo (PL) 60 minutes before completing a LTT. The variables were: time and distance in LTT, and post-effort lactate concentrations ([La]) in minutes 1, 3, 5, 7, and 9. The Student's t test was used for the analysis and the size of the effect (SE) was measured through Cohen's d test.

Results:

the time on LTT showed significant differences between BA and PL (p = 0.047; SE = 0.48). No significant differences were seen between both groups (p = 0.071; SE = 0.48), and [La] showed significant differences between both groups in minutes 3, 5 and 7, respectively (p < 0.05).

Conclusion:

acute supplementation with BA showed a significant increase in the execution time in LTT in the intensities connected to MAS. Hence, acute supplementation with BA is an ergogenic aid that could be considered by resistance athletes in order to increase the athletic performance.

Keywords : Beta-alanine; Performance-enhancing substances; Exercise test.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )