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Exercise and diet combo may help Hard-to-Gain weight women build muscle

NCT ID NCT06894043

Disease control Sponsor: Centre Hospitalier Universitaire de Saint Etienne 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests whether a program of adapted physical activity combined with extra nutrition can help women with constitutional thinness gain lean body mass (muscle). Constitutional thinness is a condition where people are naturally very thin and find it hard to gain weight, even though they are not malnourished. The study will enroll 62 women aged 18-50 with a BMI of 18.5 or less and stable weight. Participants will follow an exercise and diet plan, and researchers will measure changes in muscle mass, BMI, and energy balance.

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 62 people

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

Started

Jul 2025

Expected to finish

Jun 2026

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 50 years

Sex

Female participants only

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: * Gender: Female * BMI: ≤ 18.5 kg/m² * Weight Stability: Stable weight for at least 3 months * Age: 18 to 50 years old at the inclusion visit * Diagnosed with Constitutional thinness Exclusion Criteria: * Pregnancy, Parturition, or Lactation * Legal Restrictions: Individuals deprived of liberty, involuntarily hospitalized, or hospitalized for reasons other than research purposes, adults under legal protection (guardianship or curatorship) or unable to provide consent * Eating Disorders: Individuals with eating disorders (DSM IV and 5 criteria) * Excessive Alcohol Consumption: Consumption exceeding the equivalent of 10 glasses of wine per week * Severe Progressive Conditions: Progressive severe conditions (e.g., diabetes) * Intense Physical Activity: Individuals engaging in intense physical activity (\> 3 sessions per week) * Heavy Smoking: Significant smoking (\>10 cigarettes per day) * Psychiatric Conditions: Presence of depressive or psychiatric conditions requiring antidepressant or psychotropic treatment * Medical or Surgical History: Medical or surgical history deemed incompatible with the study by the investigator * MRI Contraindication: Individuals with contraindications to MRI will not undergo spectro-MRI analyses

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As listed by the trial registrant

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

Constitutional thinness

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

  • CHU de Saint-Etienne

    RECRUITING

    Saint-Etienne, France, 42055, France

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