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Can special exercise programs help heart failure patients breathe easier?

NCT ID NCT04068844

Knowledge-focused Sponsor: University of Texas Southwestern Medical Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study looked at why people with a certain type of heart failure (HFpEF) have trouble exercising and feel short of breath. Researchers tested whether different exercise programs (using the whole body or just one leg) could improve fitness. The study involved 93 adults aged 60 and older with heart failure but without severe kidney disease or other major conditions.

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

93 people

The number who actually took part.

Started

Aug 2019

Finished

Apr 2026

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

60 to 90 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: * signs and symptoms of heart failure * an ejection fraction \> 0.50 * objective evidence of diastolic dysfunction Exclusion Criteria: * age \< 60 years * BMI \> 50 kg/m2 * PDE5 inhibitor use * Severe valvular disease * Severe COPD * CKD 4 or higher * Contra-indication to MRI.

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Conditions

The condition(s) this trial relates to.

diastolic heart failure heart failure Motor Activity

As listed by the trial registrant

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

Heart failure, diastolic

Contacts and locations

Locations

  • The Institute for Exercise and Environmental Medicine

    Dallas, Texas, 75231, United States

More trials for these conditions

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