Beta-Alanine supplementation improves throwing velocities in repeated sprint ability and 200-m swimming performance in young water polo players

(Beta-Alanin-Supplementierung verbessert die Wurfgeschwindigkeiten bei wiederholter Sprintfähigkeit und die 200-m-Schwimmleistung bei jungen Wasserballern)

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 tethere...d eggbeater kicks. Participants were randomly allocated into two groups (placebo × beta-alanine) and supplemented with 6.4g·day-1of 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.
© Copyright 2017 Pediatric Exercise Science. Human Kinetics. Veröffentlicht von Human Kinetics. Alle Rechte vorbehalten.

Schlagworte: Nachwuchsleistungssport Wasserball Wurf Geschwindigkeit Leistung Test Supplementierung Schwimmen Technik
Notationen: Nachwuchssport Trainingswissenschaft Spielsportarten
Veröffentlicht in: Pediatric Exercise Science
Veröffentlicht: Human Kinetics 2017
Jahrgang: 29
Heft: 2
Seiten: 203-212
Dokumentenarten: Artikel
Sprache: Englisch
Level: hoch
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