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Beetroot juice may boost fitness while fasting

NCT ID NCT06767176

Knowledge-focused Sponsor: University of Guelph Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at whether drinking beetroot juice every day during the first week of Ramadan helps maintain or improve exercise performance in healthy adults. Twenty-one participants did exercise tests before and after fasting. The goal was to see if the nitrates in beetroot juice could offset any drop in fitness caused by fasting.

What this could mean

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

Active substance
beetroot juice
What this could lead to
If it works, this could suggest a simple dietary supplement to help maintain fitness during fasting periods.
What could go wrong
This is a small, completed study in healthy adults, so results may not apply to other groups. The effect may be small or absent.

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

21 people

The number who actually took part.

Started

Jan 2025

Finished

Mar 2025

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 50 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Free of known cardiovascular or metabolic diseases or sleep disorders * No history of smoking (within the past 3 months) * Able to engage in physical activity assessed through the physical activity readiness questionnaire (PAR-Q+) * No prescription of chronic medications other than oral contraceptives * Able to abide by fasting protocols for all visits * Individuals who are not allergic to ultrasound gel or beetroot juice * Individuals who are not pregnant Exclusion Criteria: * Individuals diagnosed with cardiovascular or metabolic disease or sleep disorders * Has a history of smoking (within the past 3 months) * Not ready to engage in physical activity as assessed by the PAR-Q+ * Individuals prescribed chronic medications other than oral contraceptives * Unable to abide by fasting protocols for any testing visit * Allergic to ultrasound gel or beetroot juice * Pregnancy

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Conditions

The condition(s) this trial relates to.

Fasting

As listed by the trial registrant

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

Ramadan fasting

Contacts and locations

Locations

  • University of Guelph

    Guelph, Canada

More trials for these conditions

Other studies related to the condition(s) this trial covers.