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Mom's workout may shape Baby's future weight

NCT ID NCT07467694

Knowledge-focused Sponsor: Joslin Diabetes Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 how exercise and physical activity during and after pregnancy change the makeup of breast milk. Researchers want to see if these changes affect how babies use energy and grow, which could help prevent childhood obesity. The study will follow 200 mothers and their infants for one year after birth.

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 200 people

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

Started

Dec 2025

Expected to finish

Jul 2030

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 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: * 18-45 y of age at the time of enrollment * Pre-gravid or first trimester BMI 18.5 -40 kg/m2 * Uncomplicated singleton pregnancy * Intention to exclusively breastfeed for \>3 months and, if parity \>1, that they successfully breastfed a previous pregnancy * Term pregnancy (gestational age 37 to \<42 weeks) * Infant with birth weight \>10th percentile of weight for gestational age Exclusion Criteria: * Any obstetric contra-indication to exercise at 1 month * Diagnosis of uncontrolled (HbA1c \>7%) type 1 or type 2 diabetes, or gestational diabetes managed with insulin * Intrauterine growth restriction * Pre-eclampsia or other pregnancy complications * Alcohol, cannabis or tobacco use * Known congenital metabolic, endocrine disease, or congenital illness affecting infant feeding/growth * Major fetal anomalies * Musculoskeletal issues that would make exercise difficult

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Conditions

The condition(s) this trial relates to.

Breast Feeding lactation disease Motor Activity Pediatric Obesity obesity disorder prevention target

As listed by the trial registrant

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

Breastfeeding Childhood obesity Childhood obesity prevention Exercise Lactation Physical activity Pregnancy

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

  • Joslin Diabetes Center

    RECRUITING

    Boston, Massachusetts, 02215, United States

  • Oklahoma University College of Medicine

    RECRUITING

    Oklahoma City, Oklahoma, 73104, United States

More trials for these conditions

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