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Could eccentric exercise be the key to stronger hearts?

NCT ID NCT07636343

Symptom relief Sponsor: University Hospital, Antwerp Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at whether a special type of exercise called eccentric training (where muscles lengthen under tension) can help people with heart failure and reduced pumping ability. Researchers will compare eccentric bike and strength training to standard cardio and strength exercises. The goal is to see if the new approach is safe, doable, and better at improving muscle strength and walking ability.

What this could mean

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

Active substance
eccentric bike training and eccentric overload strength training
What this could lead to
If successful, this could offer a more effective exercise option for heart failure patients to improve muscle strength and daily function.
What could go wrong
This is a very small, early-stage study (only 3 participants) testing feasibility, so results may not apply widely. The training is also physically demanding, which some patients may not tolerate.

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 3 people

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

Started

Jan 2023

Expected to finish

Jan 2027

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

Children (under 18), adults (18 to 64) and older adults (65 and over)

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: * HFrEF patients with ejection fraction \<40% * Exercise intolerance (\<85% of predicted VO2 peak) * clinically stable for \> 6 weeks, optimal medical treatment for \> 6 weeks Exclusion Criteria: * Contra indications for cardiac exercise rehabilitation as per consensus guidelines and recommendations * Musculoskeletal disorders that hamper (progression in) strength training * Non-stabilized acute coronary syndrome * Current acute heart failure (decompensation) * Patient having sustained a recent (\<3 months) procedure that could act as a confounder to increase VO2peak (i.e., coronary artery bypass graft surgery, percutaneous coronary intervention, cardiac resynchronization therapy, valve surgery or reparation)

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Conditions

The condition(s) this trial relates to.

systolic heart failure

As listed by the trial registrant

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

Hfref - heart failure with reduced ejection fraction Strength training effects

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

  • UHAntwerp

    RECRUITING

    Edegem, 2850, Belgium

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