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Wireless monitor reveals how Mom's workout impacts unborn Baby's heart

NCT ID NCT06813859

Knowledge-focused Sponsor: Balgrist University Hospital Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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)
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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This status has not been confirmed recently, so it may be out of date.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 Jul 09, 2026 · Last updated Jul 10, 2026 · Updated 1 time

Summary

This study looks at how a short, intense cycling workout affects the heart rate of both mother and fetus in healthy pregnant athletes. Using a wireless monitor, researchers track the baby's heart rate and blood flow in the umbilical cord during exercise. The goal is to better understand safe physical activity levels in late pregnancy.

What this could mean

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

Active substance
exercise testing (cycling)
What this could lead to
If successful, this could help understand safe exercise limits during pregnancy and improve fetal monitoring.
What could go wrong
This is a small, early-stage observational study with only 20 participants, so results may not apply to all pregnant women.

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.

Participants

About 20 people

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

Started

Jun 2025

Expected to finish

Feb 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.

Who is studied

pregnant athletes

Ages

18 to 45 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: * Presence of signed informed consent form * healthy pregnant active female over the age of 18 years and below 45 years * sporting activity \>4h/week on 2 or more weekdays * single pregnancy, between 28+0 and 34+0 weeks of pregnancy Exclusion Criteria: * No signed informed consent form or revocation of consent * pre-existing pregnancy complications

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Conditions

The condition(s) this trial relates to.

Fetal Distress

As listed by the trial registrant

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

Fetal distress

How to take part

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

  1. The places running it

    2 sites. 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

  • Balgrist University Hospital

    RECRUITING

    Zurich, Canton of Zurich, 8008, Switzerland

  • University Hospital Zurich

    RECRUITING

    Zurich, Canton of Zurich, 8091, Switzerland

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