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Can gentle nudges get teens with obesity moving?

NCT ID NCT07824453

Disease control Sponsor: Nanjing Children's Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 17, 2026 · Last updated Sep 18, 2026 · Updated 1 time

Summary

Researchers are testing whether an 8-week nudge-based exercise program can help adolescents with obesity improve their BMI and physical activity. About 140 teens aged 10 to 19 will take part. One group receives standard exercise guidance, while the other gets a program using reminders, goal setting, peer support, and small incentives to make exercise easier to start and maintain. The study measures changes in BMI, activity levels, body composition, and quality of life.

What this could mean

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

Active substance
a nudge-based exercise program using behavioral strategies like reminders, goal setting, and peer support
What this could lead to
If it works, this approach could offer a low-cost way to help adolescents with obesity start and stick with regular exercise, potentially improving BMI and metabolic health.
What could go wrong
The trial is small and behavioral changes are hard to maintain, so any improvements in BMI or activity may fade after the program ends. Nudges do not work for everyone, and the study cannot prove cause and effect.

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 140 people

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

Started

Jul 2026

Expected to finish

Jun 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.

Ages

10 to 19 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: * Aged 10-19 years. * Body mass index (BMI) at or above the 95th percentile for age and sex according to the Chinese BMI screening criteria for overweight and obesity in children and adolescents. * Able to communicate and understand study instructions. * Willing to participate in the study and provide written informed consent, with informed consent from a parent or legal guardian as required. Exclusion Criteria: * Known secondary causes of obesity, including hypothalamic, endocrine, genetic, or syndromic obesity. * Use of anti-obesity medications, including injectable glucagon-like peptide-1 (GLP-1) receptor agonists, within 3 months before enrollment. * Severe cardiovascular or cerebrovascular disease, severe hepatic or renal dysfunction, or other serious organic diseases that may affect participation or study outcomes. * Psychiatric disorders or cognitive impairment that may interfere with participation or completion of study assessments. * Current participation in another weight-loss, structured exercise, or other intervention program that may affect body weight or physical activity. * Any contraindication to exercise or medical or physical condition that substantially limits participation in the prescribed exercise program.

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Conditions

The condition(s) this trial relates to.

Pediatric Obesity

As listed by the trial registrant

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

Pediatric obesity

How to take part

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  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

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Contacts and locations

Locations

  • Nanjing Children's Hospital

    RECRUITING

    Nanjing, Jiangsu, China

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