Beetroot juice ingestion does not improve neuromuscular performance and match-play demands in elite female hockey players: a randomized, double-blind, placebo-controlled study

López-Samanes, Álvaro ORCID logoORCID: https://orcid.org/0000-0003-0721-0150, Pérez-Lopez, Alberto, Morencos, Esther, Muñoz, Alejandro, Kühn, Adriaan, Sánchez-Migallón, Violeta, Moreno-Pérez, Víctor, González-Frutos, Pablo, Bach-Faig, Anna, Roberts, Justin and Domínguez, Raúl (2022) Beetroot juice ingestion does not improve neuromuscular performance and match-play demands in elite female hockey players: a randomized, double-blind, placebo-controlled study. European Journal of Nutrition. ISSN 1436-6215

[img] Text
Published Version
Restricted to Repository staff only
Available under the following license: Creative Commons Attribution Non-commercial No Derivatives.

Download (742kB)
[img] Text
Accepted Version
Restricted to Repository staff only until 19 November 2023.
Available under the following license: Creative Commons Attribution Non-commercial No Derivatives.

Download (232kB)
Official URL: http://dx.doi.org/10.1007/s00394-022-03052-1

Abstract

Purpose Beetroot juice is a dietary supplement that contains high levels of inorganic nitrate (NO3-) and that its intake has proven effective at increasing blood nitric oxide (NO) concentrations improving endurance performance. However, the effect of this supplement in team sport performance, especially in female athletes, has been barely studied. This study aimed to compare the acute effects of beetroot juice supplementation on neuromuscular performance and match-play demands in elite female field hockey players. Methods Eleven elite female hockey players (22.8 ± 5.1 years) belonging to a bronze team medal in Eurohockey Club Champions Cup participated in this study. Participants were randomly divided into two groups undergoing a test battery with beetroot juice (70 mL, 6.4 mmol NO3−) or placebo (70 mL, 0.04 mmol NO3−) in two different days with one week between protocols. The neuromuscular test battery consisted of a countermovement jump, isometric handgrip strength (i.e., dominant hand), 20 m-sprint and repeated sprint ability test (RSA). Afterward, a simulated hockey match play (2 × 12.5 min) was performed and recorded by Global Positioning System (GPS). Results No statistically significant improvements were observed in any physical parameters analysed comparing beetroot juice compared to placebo ingestion, countermovement jump (p = 0.776, ES = 0.16), isometric handgrip strength (p = 0.829; ES = – 0.08), 20 m sprint test (p = 0.227; ES = – 0.23), mean repeated sprint ability (p = 0.955, ES = 0.03) and in any physical match demands measured by GPS (p = 0.243–1.000; ES = 0.02–0.47). Conclusion Acute beetroot juice supplementation did not produce any statistically significant improvement in neuromuscular performance or match-play demands in elite female field hockey players.

Item Type: Journal Article
Keywords: Team-sports, Female, Dietary supplements, Nitrates
Faculty: Faculty of Science & Engineering
SWORD Depositor: Symplectic User
Depositing User: Symplectic User
Date Deposited: 09 Dec 2022 16:11
Last Modified: 13 Dec 2022 16:50
URI: https://arro.anglia.ac.uk/id/eprint/708126

Actions (login required)

Edit Item Edit Item