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Can beetroot juice boost your workout? scientists investigate

NCT ID NCT02850367

Knowledge-focused Sponsor: University Hospital, Grenoble Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study looked at how certain dietary supplements (nitrate, L-Arginine, L-Citrulline) affect exercise performance in 63 healthy, sedentary adults. Participants took the supplements or a placebo for up to 8 weeks. Researchers measured muscle strength and blood flow after exercise. The goal was to understand basic body responses, not to treat any disease.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Nitrate, L-Arginine, L-Citrulline
What this could lead to
If successful, this could help understand how diet affects exercise and recovery in healthy people.
What could go wrong
This is a small, early-stage study in healthy volunteers, not a patient population. Results may not apply to people with medical conditions.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

63 people

The number who actually took part.

Started

May 2016

Finished

Sep 2021

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 70 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Sedentary subjects * No cardiovascular, respiratory, metabolic and neurological disorders Exclusion Criteria: * Body mass index \> 28 kg.m-2 * Smoker * Alcool intake \> 10g/day * Psychiatric diseases * Subjects under treatment able to interfere with their cardiovascular, metabolic and neurological status

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Physiology

Contacts and locations

Locations

  • Grenoble University Hospital

    Grenoble, Auvergne-Rhône-Alpes, 38043, France

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