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The Effects of Nitrate Supplementation on Elite Runners

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ClinicalTrials.gov Identifier: NCT03449992
Recruitment Status : Completed
First Posted : March 1, 2018
Last Update Posted : March 1, 2018
Sponsor:
Collaborators:
Camilo Jose Cela University
Universidad Politecnica de Madrid
Information provided by (Responsible Party):
Carlos Balsalobre-Fernández, Universidad Autonoma de Madrid

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

Condition or disease Intervention/treatment Phase
Nutrition Physical Performance Sport Physiology Nitrates Elite Athletes Dietary Supplement: nitrate-rich beetroot juice Dietary Supplement: Placebo Not Applicable

Detailed Description:
This study analyzed the effects of 15 days beetroot juice supplementation on the VO2max, running economy, exercise perceived exertion, muscle power and locomotion mechanics in a group of 12 elite Spanish middle and long distance runners

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 12 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: 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.
Masking: Triple (Participant, Investigator, Outcomes Assessor)
Masking Description:

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 Then, this person was withdrawn for the research procedures.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.

Primary Purpose: Other
Official Title: The Effects of Beet-root Juice Supplementation on Exercise Economy, Rating of Perceived Exertion and Running Mechanics in Elite Distance Runners
Actual Study Start Date : November 1, 2016
Actual Primary Completion Date : January 10, 2017
Actual Study Completion Date : November 15, 2017

Arm Intervention/treatment
Experimental: Intervention group
Participants in this group ingested nitrate-rich beetroot juice for 15 days
Dietary Supplement: nitrate-rich beetroot juice
Nitrate-rich beetroot juice supplementation was administered for 15 consecutive days to participants in this arm
Other Name: Beetroot juice

Placebo Comparator: Placebo group
Participants in this group ingested a placebo drink for 15 days
Dietary Supplement: Placebo
Placebo drink




Primary Outcome Measures :
  1. Running economy [ Time Frame: Changes from baseline at 15 days ]
    The cost of running (oxygen consumption) at different speeds


Secondary Outcome Measures :
  1. Time to exhaustion [ Time Frame: Changes from baseline at 15 days ]
    Time that the athlete endured running until voluntarily ending the exercise

  2. Muscle power [ Time Frame: Changes from baseline at 15 days ]
    Ability to produce muscle power in a jump test

  3. Muscle oxygenation [ Time Frame: Changes from baseline at 15 days ]
    Saturation of O2 in the vastus lateralis during exercise

  4. RPE [ Time Frame: Changes from baseline at 15 days ]
    Rate of perceived exertion during the exercise

  5. Running mechanics [ Time Frame: Changes from baseline at 15 days ]
    Contact and flight time of each step during the exercise



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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

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

Exclusion Criteria:

  • Injury

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03449992


Sponsors and Collaborators
Universidad Autonoma de Madrid
Camilo Jose Cela University
Universidad Politecnica de Madrid
Investigators
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Principal Investigator: Carlos Balsalobre-Fernández, PhD Universidad Autonoma de Madrid

Study Data/Documents: Individual Participant Data Set  This link exits the ClinicalTrials.gov site

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Responsible Party: Carlos Balsalobre-Fernández, Principal Investigator, Universidad Autonoma de Madrid
ClinicalTrials.gov Identifier: NCT03449992     History of Changes
Other Study ID Numbers: BEETRUN
First Posted: March 1, 2018    Key Record Dates
Last Update Posted: March 1, 2018
Last Verified: February 2018
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: Coded database with data of the pre-post measures will be made available
Supporting Materials: Analytic Code
Time Frame: Indefinitely available
Access Criteria: Open access
URL: https://doi.org/10.6084/m9.figshare.5873190.v1

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No