Beetroot Juice Ingestion Effects on Field Hockey Performance. (BEETHOCKEY)

Acute Effects of Beetroot Juice Ingestion on Neuromuscular Performance and Match-play Demands in Elite Female Hockey Players.

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.

Study Overview

• Status: Completed
• Conditions: Nitrates; Hockey
• Intervention / Treatment: Dietary supplement: Beetroot juice; Dietary supplement: Beetroot juice placebo

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

• Study Type: Interventional
• Enrollment (Actual): 11
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Spain
  • Madrid, Spain, 28223
    • Universidad Francisco de Vitoria

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 35 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Female

Description

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

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Beetroot supplementation; Acute beetroot juice supplementation	Dietary supplement: Beetroot juice; One serving 70 mL of beetroot juice (6.4 mmol of NO3-; Beet-It-Pro Elite Shot, James White Drinks Ltd., Ipswich, UK) 3 h before initiating the testing session.; Dietary supplement: Beetroot juice placebo; One serving 70 mL of beetroot juice placebo (0.04 mmol of NO3-; Beet-It-Pro Elite Shot, James White Drinks Ltd., Ipswich, UK) 3 h before initiating the testing session.
Placebo Comparator: Placebo supplementation; Acute placebo supplementation	Dietary supplement: Beetroot juice; One serving 70 mL of beetroot juice (6.4 mmol of NO3-; Beet-It-Pro Elite Shot, James White Drinks Ltd., Ipswich, UK) 3 h before initiating the testing session.; Dietary supplement: Beetroot juice placebo; One serving 70 mL of beetroot juice placebo (0.04 mmol of NO3-; Beet-It-Pro Elite Shot, James White Drinks Ltd., Ipswich, UK) 3 h before initiating the testing session.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Changes in simulated field hockey match demands (m/min)	Using a global position system (GPS)	1 week
Changes in repeated-sprint-ability test (s)	Time to complete the modified repeated sprint ability test using photocell timing gates	1 week

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Changes in sprint time (s)	Time to complete 20-m sprints using photocell timing gates	1 week
Changes in maximal jump height (cm)	Maximal jump height using a contact platform	1 week
Changes in maximal isometric handgrip strength (N)	Using a hand-held dynamometer	1 week

Collaborators and Investigators

• Sponsor: Universidad Francisco de Vitoria
• Collaborators: University of Alcala; University of Seville

Publications and helpful links

General Publications

• López-Samanes Á, Pérez-Lopez A, Morencos E, Muñoz A, Kühn A, Sánchez-Migallón V, Moreno-Pérez V, González-Frutos P, Bach-Faig A, Roberts J, Domínguez 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. 2022 Nov 19. doi: 10.1007/s00394-022-03052-1. [Epub ahead of print]

Study record dates

Study Major Dates

• Study Start (Actual): March 1, 2018
• Primary Completion (Actual): March 8, 2018
• Study Completion (Actual): March 15, 2018

Study Registration Dates

• First Submitted: January 14, 2022
• First Submitted That Met QC Criteria: January 14, 2022
• First Posted (Actual): January 26, 2022

Study Record Updates

• Last Update Posted (Actual): April 14, 2022
• Last Update Submitted That Met QC Criteria: April 13, 2022
• Last Verified: April 1, 2022

More Information

Terms related to this study

• Keywords: female; dietary supplements; sports nutrition; field hockey
• Other Study ID Numbers: Universidad Francisco_Vitoria

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Undecided

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No