Effects of four weeks of β-alanine supplementation on repeated sprint ability in water polo players

Artioli, GG ORCID: https://orcid.org/0000-0001-8463-2213, Brisola, GMP, Papoti, M and Zagatto, AM, 2016. Effects of four weeks of β-alanine supplementation on repeated sprint ability in water polo players. PLOS ONE, 11 (12), e0167968. ISSN 1932-6203

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Abstract

The purpose of this study was to investigate the effect of four weeks of β-alanine supplementation on repeated sprint ability in water polo players. Twenty-two male water polo players participated in the study, divided randomly into two homogeneous groups (placebo and β-alanine groups). The study design was double-blind, parallel and placebo controlled. Before and after the supplementation period (28 days), the athletes performed two specific repeated sprint ability tests interspaced by a 30-minute swimming test. Participants received 4.8g∙day-1 of the supplement (dextrose or β-alanine) on the first 10 days and 6.4g∙day-1 on the final 18 days. There was no significant group-time interaction for any variable. The qualitative inference for substantial changes demonstrated a likely beneficial effect in the β-alanine group (β-alanine vs placebo) for mean time (6.6±0.4s vs 6.7±0.4s; 81% likely beneficial), worst time (6.9±0.5s vs 7.1±0.5s; 78% likely beneficial) and total time (39.3±2.5s vs 40.4±2.5s; 81% likely beneficial) in the first repeated sprint ability set and for worst time (7.2±0.6s vs 7.5±0.6s; 57% possible beneficial) in the second repeated sprint ability set. Further, was found substantial change for total time for both repeated sprint ability tests (80.8±5.7s vs 83.4±5.6s; 52% possible beneficial). To conclude, four weeks of β-alanine supplementation had a likely beneficial effect in the first set of repeated sprint ability tests and a possible beneficial effect for worst time in the second set performed in a specific protocol in water polo players.

Item Type:	Journal article
Publication Title:	PLOS ONE
Creators:	Artioli, G.G., Brisola, G.M.P., Papoti, M. and Zagatto, A.M.
Publisher:	Public Library of Science
Date:	8 December 2016
Volume:	11
Number:	12
ISSN:	1932-6203
Identifiers:	Number Type 10.1371/journal.pone.0167968 DOI
Divisions:	Schools > School of Science and Technology
Record created by:	Jonathan Gallacher
Date Added:	20 Feb 2017 15:52
Last Modified:	30 Jun 2017 14:59
URI:	https://irep.ntu.ac.uk/id/eprint/30233

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