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Could short bursts of intense exercise boost heart recovery better than steady workouts?

NCT ID NCT07619664

Disease control Sponsor: Riphah International University 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 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares two supervised treadmill exercise programs for people recovering from coronary artery disease or a heart procedure. One group does high-intensity interval training (HIIT) — short, hard efforts with rest periods — while the other does moderate-intensity continuous training (MICT) — steady, moderate exercise. Researchers will measure changes in heart function, walking ability, and cholesterol levels to see which approach works better.

What this could mean

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

Active substance
High-Intensity Interval Training (HIIT) and Moderate-Intensity Continuous Training (MICT)
What this could lead to
If HIIT proves superior, it could become a standard exercise option in cardiac rehab, potentially improving heart function and fitness more efficiently than traditional moderate exercise.
What could go wrong
This is a small, early-stage trial with 66 participants, so results may not apply to all heart patients. HIIT is intense and may not be suitable for everyone, even with medical clearance.

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 66 people

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

Expected to start

Jun 2026

An estimate. Start dates often move.

Expected to finish

Aug 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

18 to 60 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: * Adults aged 18-60 years. * Diagnosed with stable coronary artery disease confirmed by angiography, stress testing, or echocardiography. * Left ventricular ejection fraction ≥45%. * Functional NYHA Class I or II. * Medically cleared by a cardiologist to participate in exercise (including recent ECG or stress test if necessary). * Lightly active lifestyle prior to study (not involved in structured exercise programs). Exclusion Criteria: * Unstable angina or recent myocardial infarction (within the past 6 weeks). * Uncontrolled hypertension (systolic BP \>180 mmHg or diastolic BP \>110 mmHg). * Severe valvular heart disease, arrhythmias, or left ventricular dysfunction (EF \<35%). * Musculoskeletal disorders (e.g., severe osteoarthritis, recent fractures, or surgeries) preventing safe participation in exercise. * Neurological disorders affecting mobility or safe exercise (e.g., stroke, Parkinson's disease). * Uncontrolled diabetes mellitus (HbA1c \>9% or recent hypoglycemia). * Any other condition judged by the investigator to make participation unsafe.

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Conditions

The condition(s) this trial relates to.

coronary artery disorder

As listed by the trial registrant

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

Coronary artery disease

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  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

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Ch Pervaiz Elahi institute of cardiology Multan.

    Multan, Punjab Province, 60000, Pakistan

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