The Effects of Nitrate Supplementation on Elite Runners

NCT03449992 | Completed

• 1 other identifier: BEETRUN
• Study Type: interventional
• Target: 12
• Locations: 0 countries
• Sites: N/A

Brief Summary

This study analyzed the effects of 15 days of beetroot juice supplementation on different performance measures in elite Spanish distance runners

Conditions

Nutrition; Physical Performance; Sport Physiology; Nitrates; Elite Athletes

Outcome Measures

Primary Outcomes (1)

• Running economy

  The cost of running (oxygen consumption) at different speeds

  Changes from baseline at 15 days

Secondary Outcomes (5)

• Time to exhaustion

  Changes from baseline at 15 days

• Muscle power

  Changes from baseline at 15 days

• Muscle oxygenation

  Changes from baseline at 15 days

• RPE

  Changes from baseline at 15 days

• Running mechanics

  Changes from baseline at 15 days

Study Arms (2)

Intervention group

EXPERIMENTAL

Participants in this group ingested nitrate-rich beetroot juice for 15 days

Dietary Supplement: nitrate-rich beetroot juice

Placebo group

PLACEBO COMPARATOR

Participants in this group ingested a placebo drink for 15 days

Dietary Supplement: Placebo

Interventions

nitrate-rich beetroot juice DIETARY_SUPPLEMENT

Nitrate-rich beetroot juice supplementation was administered for 15 consecutive days to participants in this arm

Also known as: Beetroot juice

Intervention group

Placebo DIETARY_SUPPLEMENT

Placebo drink

Placebo group

Eligibility Criteria

• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• Competing in national and international events
• Personal best in urban 10k: 33 minutes 0 seconds

You may not qualify if:

• Injury

Sponsors & Collaborators

• Universidad Autonoma de Madrid: lead
• Camilo Jose Cela University: collaborator
• Universidad Politecnica de Madrid: collaborator

Study Officials

• Carlos Balsalobre-Fernández, PhD

  Universidad Autonoma de Madrid

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
• Masking Details: Twelve participants were randomly assigned to either an intervention group or a placebo group, and a 4 digits code based on their Spanish ID card were used to code their names. Then, an independent researcher prepared individual bags with either a 15-days worth of placebo drinks or beetroot drinks, and gave it to the athletes. Then, this person was withdrawn for the research procedures. Finally, another group of researchers, without knowing what athlete was on each group (intervention or placebo), conducted the performance tests pre and post 15 days of supplementation, and another group analyzed the data once collected.
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Model Details: Twelve elite distance runners were randomly assigned to either an intervention group or a placebo group. Participants in each group consumed beetroot juice or a placebo drink for 15 consecutive days.

Study Record Dates

• First Submitted: February 19, 2018
• First Posted: March 1, 2018
• Study Start: November 1, 2016
• Primary Completion: January 10, 2017
• Study Completion: November 15, 2017
• Last Updated: March 1, 2018

Record last verified: 2018-02

Data Sharing

• IPD Sharing: Will share
• Shared Documents: ANALYTIC CODE
• Time Frame: Indefinitely available
• Access Criteria: Open access