Impact of Beetroot Juice Ingestion on Female Rugby Performance

Not Applicable

Completed

• Conditions: Placebo; Nitric Oxide
• Interventions: Dietary Supplement: Beetroot juice

• Registration Number: NCT05209126
• Lead Sponsor: Universidad Francisco de Vitoria

Brief Summary

Rugby is a team sport characterized by high-intermittent efforts, due to the importance of realizing intermittent and explosive efforts in rugby the use of nutritional strategies such as beetroot ingestion should be explored with the aim to enhance the capacity for repeating high-intensity actions in female players.

Detailed Description

Rugby is a team sport characterized by high-intermittent efforts, thus, to the importance of realizing intermittent and explosive efforts in field hockey is crucial. For this reason, the use of nutritional strategies in field hockey should be explored with the aim to enhance the capacity for repeating high-intensity actions. However, scientific evidence supports only a few numbers of dietary supplements that have reported good evidence for improving sports performance, between we can mention beetroot juice supplementation with doses \> 5 mmol of NO3-. Beetroot juice is a NO3- precursor with recognized effectiveness to elicit performance due to different physiological mechanisms associated with its ingestion such as increment in vasodilatation, skeletal muscle contractility, or delaying fatigue development that could be linked with an enhance or performance in team-sports athletes. However, the majority of the studies has been realized in male athletes being female athletes underrepresented in beetroot juice supplementation research. Thus, the aim of this study was to analyze the effects of beetroot juice ingestion on neuromuscular performance in female rugby players.

Study Timeline

• Status Verified: 2022-01
• Study First Submitted: 2022-01-14
• Study First Submitted QC: 2022-01-14
• Study Start: 2022-01-20
• Study First Posted: 2022-01-26
• Primary Completion: 2022-01-27
• Study Completion: 2022-01-30
• Last Update Submitted: 2022-04-20
• Last Update Posted: 2022-04-21

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 13

Inclusion Criteria

• More than 5 years of rugby training experience.
• Active rugby player

Exclusion Criteria

• Concurrently participating in other studies.
• Contraindications to beetroot juice ingestion.
• Physical limitations, health problems, or musculoskeletal injuries.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Placebo supplementation	Beetroot juice	One serving 140 mL of beetroot juice placebo (0.08 mmol of NO3-; Beet-It-Pro Elite Shot, James White Drinks Ltd., Ipswich, UK) 3 h before initiating the testing session.
Beetroot supplementation	Beetroot juice	One serving 140 mL of beetroot juice (12.8 mmol of NO3-; Beet-It-Pro Elite Shot, James White Drinks Ltd., Ipswich, UK) 3 h before initiating the testing session.

Primary Outcome Measures

Name	Time	Method
Changes in Bronco Aerobic Fitness Test	1-week	Time to complete test using photocell timing gates

Secondary Outcome Measures

Name	Time	Method
Changes in maximal jump height (cm)	1 week	Maximal jump height using a contact platform
Changes in 30-meters sprint time (s)	1 week	Time to complete 30-m sprints using photocell timing gates
Changes in maximal isometric handgrip strength (kg)	1-week	Using a hand-held dynamometer
Changes in rate of perceived exertion scale	1-week	Differences between placebo and beetroot juice in rate of perception exertion scale
Changes in side effects questionnarie	1-week	Differences between placebo and beetroot juice in side effects health aspects

Trial Locations

Locations (1)

Universidad Francisco de Vitoria; 🇪🇸 Madrid, Spain