Clinical trial NCT05209139: Beetroot Juice Ingestion Effects on Field Hockey Performance.
Official title: Acute Effects of Beetroot Juice Ingestion on Neuromuscular Performance and Match-play Demands in Elite Female Hockey Players.
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Nitrates
Hockey
Keywords: dietary supplements
sports nutrition
field hockey
female
Lead sponsor: Universidad Francisco de Vitoria
Sponsor class: OTHER
Collaborators: name: University of Alcala
name: University of Seville
First posted: 2022-01-26
Enrollment: 11
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 35
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: TREATMENT

Brief summary: Scientific evidence supports that only a few dietary supplements have reported good evidence for improving sports performance, between we can mention beetroot juice supplementation with doses \> 5 mmol of NO3-. In this randomized placebo-controlled study, we investigated the effects of BJ acute supplementation in improving neuromuscular performance and match-play demands in female field hockey players.

Detailed description: Beetroot juice supplementation has demonstrated good evidence for improving sports performance, however, benefits in team sports, especially in female athletes, are underrepresented. In this randomized placebo-controlled study, we investigated the effects of beetroot juice acute supplementation in improving neuromuscular performance and match-play demands.Testing sessions will comprise a neuromuscular test battery consisting of a countermovement jump (CMJ), isometric handgrip strength, 20-m sprint and repeated sprint ability test, followed by a 20-minute simulated field hockey Physical match activity (distances, speeds, accelerations and decelerations) will be monitored in real-time using an inertial tracking system

Eligibility criteria: Inclusion Criteria:

* Elite female field hockey players (playing in First Field Hockey Division).
* More than 8 years of field hockey training experience.

Exclusion Criteria:

* Concurrently participating in other studies.
* Contraindications associated to beetroot ingestion.
* Health problems or musculoskeletal injuries 6 months previous to study realization

Primary outcomes:
measure: Changes in simulated field hockey match demands (m/min)
timeFrame: 1 week
measure: Changes in repeated-sprint-ability test (s)
timeFrame: 1 week
Secondary outcomes:
measure: Changes in sprint time (s)
timeFrame: 1 week
measure: Changes in maximal jump height (cm)
timeFrame: 1 week
measure: Changes in maximal isometric handgrip strength (N)
timeFrame: 1 week
Other outcomes:
Locations:
city: Madrid
country: Spain
facility: Universidad Francisco de Vitoria
Study officials:
References:
citation: Lopez-Samanes A, Perez-Lopez A, Morencos E, Munoz A, Kuhn A, Sanchez-Migallon V, Moreno-Perez V, Gonzalez-Frutos P, Bach-Faig A, Roberts J, Dominguez R. Beetroot juice ingestion does not improve neuromuscular performance and match-play demands in elite female hockey players: a randomized, double-blind, placebo-controlled study. Eur J Nutr. 2023 Apr;62(3):1123-1130. doi: 10.1007/s00394-022-03052-1. Epub 2022 Nov 19.