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Kids' exercise study reveals gut bacteria changes

NCT ID NCT07310654

Knowledge-focused Sponsor: Aiyoudong Children and Youth Sports Health Research Institute Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at how a 16-week moderate-to-vigorous physical activity program changes physical fitness and gut bacteria in healthy school-aged children. 113 kids were randomly assigned to either the exercise program or a control group. The goal was to measure fitness scores and gut bacteria diversity, not to treat any disease.

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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

113 people

The number who actually took part.

Started

Dec 2025

Finished

May 2026

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

7 to 11 years

Sex

Anyone

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: * Participants from a previous cross-sectional study cohort conducted in 2023 (Pan et al., Sci Rep 2025;15:21351), at which time they were 6-9 years old. * Able to complete the 16-week follow-up. * Guardian provides written informed consent, and the child provides assent. * Medically cleared by a physician or school nurse to participate in moderate-intensity physical activity (no contraindications). * No antibiotic use in the 4 weeks prior to baseline. * No fever or acute gastroenteritis in the 2 weeks prior to baseline. * Able to provide stool samples as required. Exclusion Criteria: * Diagnosed with cardiopulmonary diseases, epilepsy, severe asthma, severe musculoskeletal disorders, or congenital heart disease. * Recent acute exacerbation of chronic gastrointestinal diseases. * Planning to follow a special diet (e.g., ketogenic, vegetarian) or requiring long-term prescription of antibiotics/probiotics. * Planning to be absent for \>20% of the intervention period due to travel or other commitments. * Enrolled in other high-intensity sports training programs that cannot be cancelled. * Developmental or behavioral issues that would impede cooperation, as assessed by teachers and parents.

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Conditions

The condition(s) this trial relates to.

Motor Activity

As listed by the trial registrant

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

Healthy

Contacts and locations

Locations

  • Aiyoudong Children and Youth Sports Health Research Institute

    Weifang, Shandong, 261000, China

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