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Beetroot juice may boost heart recovery in diabetes

NCT ID NCT07560800

Symptom relief Sponsor: Oxford Brookes University 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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 1 time

Summary

This study will test whether a single dose of beetroot juice can improve blood pressure and heart rate recovery after light cycling in adults with type 2 diabetes. About 20 participants aged 40-65 will receive either beetroot juice or a placebo in random order. The goal is to see if the nitrates in beetroot juice help blood vessels relax and speed up recovery after exercise.

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 (nitrate-rich dietary supplement)
What this could lead to
If it works, this could point toward a simple dietary supplement to help people with type 2 diabetes manage blood pressure and recover better after exercise.
What could go wrong
This is a very small, early-stage trial with only 20 participants, so results may not apply widely. The effect is acute (single dose) and may not translate to long-term benefits.

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

About 20 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Jul 2026

An estimate. End dates often move.

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

40 to 65 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: * Clinically diagnosed Type 2 Diabetes Mellitus * Aged 40 to 65 years * Not treated with insulin * Stable diabetes medication regimen for at least 3 months * Able to understand the study information and provide informed consent * Able to safely perform light-to-moderate cycling exercise Exclusion Criteria: * Current or recent use of insulin * Use of organic nitrates (e.g., glyceryl trinitrate) or phosphodiesterase-5 inhibitors (e.g., sildenafil, tadalafil) * Use of systemic antibiotics within the specified preparation period or regular use of antiseptic/antibacterial mouthwash during study participation * Use of supplements known to interfere with nitric oxide metabolism within the defined preparation period * Unstable or clinically significant cardiovascular disease * Uncontrolled hypertension or any condition that makes exercise unsafe * Chronic kidney disease, history of kidney stones, or other relevant renal conditions * Neurological, musculoskeletal or systemic disorders that impair safe participation * Known or suspected allergy or intolerance to beetroot, lemon or any component of the study products * Pregnancy or breastfeeding * Inability to comply with study preparation requirements

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Conditions

The condition(s) this trial relates to.

autonomic nervous system disorder hypertensive disorder type 2 diabetes mellitus

As listed by the trial registrant

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

Autonomic nervous system diseases Hypertension Type 2 diabetes mellitus

How to take part

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  1. The places running it

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  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • Clinical Physiology Laboratory, Oxford Brookes University

    Oxford, Oxfordshire, OX3 0BP, United Kingdom

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