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Is outdoor exercise safe for kids in polluted cities? new study aims to find out.

NCT ID NCT07431021

Knowledge-focused Sponsor: Queen Mary University of London 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at how short-term exposure to air pollution affects children's breathing. Around 330 children from London schools will either take a science lesson or do physical education outdoors. Researchers will measure lung function and immune responses to see if exercising in polluted air is worse than resting.

What this could mean

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

What this could lead to
If successful, this could help guide recommendations on when it is safe for children to exercise outdoors in polluted areas.
What could go wrong
This is an observational study, not a treatment trial. Results may not apply to all children or regions with different pollution levels.

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 330 people

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

Started

Oct 2025

Expected to finish

Jul 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

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: * Attending schools in Central and East London that have been recruited to the study Exclusion Criteria: * Not able to engage with PE lessons on safety grounds, reported by their parents. * Children with learning or physical disabilities sufficient for them to be unable to give informed assent to the study, or to carry out study procedures

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Conditions

The condition(s) this trial relates to.

acute asthma Motor Activity respiratory system disorder

As listed by the trial registrant

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

Asthma acute Respiratory

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

  • Faculty of Medicine and Dentistry

    RECRUITING

    London, E1 2AB, United Kingdom

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