Beta-Alanine Supplementation Improves Throwing Velocities in Repeated Sprint Ability and 200-m Swimming Performance in Young Water Polo Players

Autor(es)

Claus, Gabriel Machado ; Redkva, Paulo Eduardo ; Pinheiro Brisola, Gabriel Mota ; Malta, Elvis Sousa ; Bonetti de Poli, Rodrigo de Araujo ; Miyagi, Willian Eiji ; Zagatto, Alessandro Moura

• Tipo de documento: Artigo Científico
• Fonte: PEDIATRIC EXERCISE SCIENCE; v. 29, n. 2, p. 203-212, MAY 2017.
• Citações Web of Science: 6

Resumo

The purpose of this study was to investigate the effects of beta alanine supplementation on specific tests for water polo. Fifteen young water polo players (16 +/- 2 years) underwent a 200-m swimming performance, repeated-sprint ability test (RSA) with free throw (shooting), and 30-s maximal tethered eggbeater kicks. Participants were randomly allocated into two groups (placebo x beta-alanine) and supplemented with 6.4g.day(-1) of beta-alanine or a placebo for six weeks. The mean and total RSA times, the magnitude based inference analysis showed a likely beneficial effect for beta-alanine supplementation (both). The ball velocity measured in the throwing performance after each sprint in the RSA presented a very like beneficial inference in the beta-alanine group for mean (96.4%) and percentage decrement of ball velocity (92.5%, likely beneficial). Furthermore, the percentage change for mean ball velocity was different between groups (beta-alanine=+2.5% and placebo=-3.5%; p =.034). In the 30-s maximal tethered eggbeater kicks the placebo group presented decreased peak force, mean force, and fatigue index, while the beta-alanine group maintained performance in mean force (44.1%, possibly beneficial), only presenting decreases in peak force. The 200-m swimming performance showed a possibly beneficial effect (68.7%). Six weeks of beta-alanine supplementation was effective for improving ball velocity shooting in the RSA, maintaining performance in the 30-s test, and providing possibly beneficial effects in the 200-m swimming performance. (AU)

• Processo FAPESP: 14/02186-7 - Efeito da suplementação beta-alanina sobre a capacidade e potência anaeróbia, habilidade de esforços repetidos e desempenho no polo aquático
• Beneficiário: Gabriel Motta Pinheiro Brisola
• Modalidade de apoio: Bolsas no Brasil - Mestrado