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Small study tests if exercise eases heart flutter symptoms

NCT ID NCT05085860

Knowledge-focused Sponsor: Ottawa Heart Institute Research Corporation 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This pilot study looked at whether it's possible to run a larger trial comparing two types of exercise—moderate steady exercise and high-intensity interval training—on symptoms of atrial fibrillation (AF), a common heart rhythm problem. Researchers enrolled 25 men and women with AF who were not already regular exercisers. Participants tried each exercise type for a week and a no-exercise week, tracking their symptoms. The main goal was to see if people would join and stick with the study, not to prove exercise works.

What this could mean

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

Active substance
exercise (moderate-intensity continuous training and high-intensity interval training)
What this could lead to
If successful, this could pave the way for larger studies to understand how exercise impacts AF symptoms, potentially guiding personalized activity recommendations.
What could go wrong
This is a very small pilot study (25 people) focused on feasibility, not on proving exercise helps AF. Results may not apply to all AF patients, and exercise could temporarily worsen symptoms in some individuals.

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

25 people

The number who actually took part.

Started

Feb 2022

Finished

Jul 2024

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 years and older

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: * Paroxysmal and Persistent AF * Rate controlled (resting ventricular rate \<110 bpm) * Able to do a symptom limited exercise test * At least 40 years of age * Self-reports being symptomatic in the past 4 weeks * If female, self-reports being post-menopausal * Able to read and understand English or French * Agrees to sign informed consent Exclusion Criteria: * Currently participating in routine exercise training * Unstable angina or uncontrolled diabetes mellitus; or established diagnosis of severe mitral or aortic stenosis, or hypertrophic obstructive cardiomyopathy with significant obstruction * Unable to access the Internet or a phone (iPhone and iPad require iOS version 10.0 and up, Android requires version 6.0 and up) during the study period * Has an automated external defibrillator, an implantable cardioverter defibrillator or other types of pacemaker * Unwilling or unable to complete the three conditions * Unable to provide written, informed consent

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Conditions

The condition(s) this trial relates to.

atrial fibrillation Motor Activity paroxysmal atrial fibrillation persistent atrial fibrillation

As listed by the trial registrant

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

Atrial fibrillation Paroxysmal atrial fibrillation Persistent atrial fibrillation

Contacts and locations

Locations

  • University of Ottawa Heart Institute

    Ottawa, Ontario, K1Y4W7, Canada

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