EFFECTS OF ACUTE Β-ALANINE SUPPLEMENTATION ON COUNTERMOVEMENT JUMP PERFORMANCE AFTER A 4X400 M RUNNING FATIGUE PROTOCOL: A RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED TRIAL

Authors

  • Nikola Todorovic Applied Bioenergetics Lab, University of Novi Sad, Serbia
  • Asier Santibañez-Gutierrez Applied Bioenergetics Lab, University of Novi Sad, Serbia; Department of Physical Education and Sports, University of the Basque Country, Spain
  • Djordje Milovanov Applied Bioenergetics Lab, University of Novi Sad, Serbia
  • Valdemar Stajer Applied Bioenergetics Lab, University of Novi Sad, Serbia
  • Sergej M. Ostojic Applied Bioenergetics Lab, University of Novi Sad, Serbia; Department of Nutrition and Public Health, University of Agder, Norway https://orcid.org/0000-0002-7270-2541
  • Julen Fernandez-Landa Applied Bioenergetics Lab, University of Novi Sad, Serbia; Department of Physical Education and Sports, University of the Basque Country, Spain https://orcid.org/0000-0003-2900-1712

Abstract

This study aimed to examine the effect of acute beta-alanine (β-alanine) supplementation on jump performance after a strenuous fatigue protocol. Twelve healthy young men (age 21.4±0.5 years, body height 180.2±5.8 cm, body mass 76.6±9.2 kg) volunteered to participate in this randomized, double-blind, placebo-controlled trial. The experimental group ingested 3.2 g of β-alanine (separated into two 1.6 g dosages) mixed with 23 g of glucose, whereas the placebo group ingested two dosages containing 23 g of glucose. Following the supplementation intake, participants completed a jump protocol involving countermovement jump (CMJ) and four consecutive countermovement jumps (CMJ-4). Subsequently, a 4x400 m running fatigue protocol was carried out to produce fatigue. After the fatigue protocol, the same jumping tests were repeated, CMJ and CMJ-4, to evaluate the loss in jump height. The Mann-Whitney U test was used to analyze differences between the groups, whereas Wilcoxon signed-rank test was conducted to analyze differences within the groups with statistical significance set at p<.05. After β-alanine supplementation, no significant decrease in jump height was found in the experimental group in none of the tests after the fatigue protocol. Conversely, a significant decrease was noticed in the placebo group in CMJ but not in the CMJ-4 test. In conclusion, an acute β-alanine supplementation could attenuate jump height loss after the fatigue protocol. Therefore, athletes and coaches should consider acute β-alanine supplementation to attenuate sports performance decrease after high-intensity exercises in which muscle acidosis is highly increased.

Key words: beta-alanine, countermovement jump, acute supplementation, sports performance

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Published

2022-12-31

How to Cite

Todorovic, N., Santibañez-Gutierrez, A., Milovanov, D. ., Stajer, V., Ostojic, S. M., & Fernandez-Landa, J. (2022). EFFECTS OF ACUTE Β-ALANINE SUPPLEMENTATION ON COUNTERMOVEMENT JUMP PERFORMANCE AFTER A 4X400 M RUNNING FATIGUE PROTOCOL: A RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED TRIAL. Kinesiology, 54(2), 201–207. Retrieved from https://hrcak.srce.hr/ojs/index.php/kinesiology/article/view/22016

Issue

Vol. 54 No. 2 (2022)

Section

Articles

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