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Breathing workouts may improve heart health in menopause

NCT ID NCT06459674

Knowledge-focused Sponsor: Indiana 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tested whether using a breathing training device (PrO2 Fit) four times a week for 8 weeks could improve cardiovascular health and mood in postmenopausal women aged 50-75. Researchers measured how quickly the women's oxygen use responded during exercise and how far they could walk in 6 minutes. The goal is to understand if simple breathing exercises can help offset age-related changes in heart and lung function.

What this could mean

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

Active substance
PrO2 Fit (IMT Trainer) device
What this could lead to
If successful, this could point toward a simple breathing exercise to improve heart health and mood in postmenopausal women.
What could go wrong
This is a small, completed study with only 28 participants, so results may not apply to all women. The device is used for training, not a drug, so benefits may be modest.

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

28 people

The number who actually took part.

Started

Apr 2024

Finished

Sep 2025

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

50 to 75 years

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Postmenopausal women (self-report at least 6 years since last menstrual cycle) * Aged 50-75 years (confirmed by birth date listed on participant's driver license at screening visit) * English-speaking * Body mass index between 25.0 to 39.9 kg/m2 * Able to ambulate without assistance * Own or have access to a Bluetooth-capable phone or tablet (IOS version 12.0 or later or Android version 7.0 or later) Exclusion Criteria: * Unable to provide informed consent. * Greater than stage II hypertension (i.e., \>159/99 mm Hg) * Current tobacco use (self-report) * Habitually exercise training ≥ 2 days per week (self-report) * Significant orthopedic limitations or other contraindications to strenuous exercise * Live or work \> 80 miles from Bloomington, Indiana * Anticipated elective surgery during the study period. * Surgery to the chest or abdomen in the last 6 months. * Plan to move residence or travel out of the local area during the study period. * History of heart attack or heart condition. * Current use of prescription medications that affect heart rate or blood vessel dilation (e.g., systemic b-adrenergic blockers, calcium channel blockers, and hormone replacement therapy). * Diagnosis of asthma or chronic pulmonary disease. * Current respiratory infection. * Diagnosis of an aneurysm in the chest, abdomen, or brain. * Psychological or social characteristics that would interfere with their ability to fully participate in the study.

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder

As listed by the trial registrant

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

Aging Obesity Postmenopausal symptoms

Contacts and locations

Locations

  • Indiana University

    Bloomington, Indiana, 47405, United States

More trials for these conditions

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