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Clean air boosts brain benefits of exercise, study hints

NCT ID NCT04830059

Knowledge-focused Sponsor: Tsinghua University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at how air pollution and different types of exercise affect thinking skills in 93 healthy adults aged 20-30. Participants did either high-intensity interval training, moderate aerobic exercise, or stretching, with some using air purifiers. Researchers measured changes in brain function, blood flow, and related biomarkers to see if cleaner air makes exercise better for the brain.

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 show how to best combine exercise and clean air to protect brain function.
What could go wrong
This is a small, early-stage study in healthy young people, so results may not apply to older adults or those with health conditions.

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

93 people

The number who actually took part.

Started

Nov 2020

Finished

Dec 2021

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

20 to 30 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: * No regular exercise in the past six months; * Healthy people without history of disease; * Aged between 20 and 30 years old. Exclusion Criteria: * Professional athletes; * Regular exercise in the past six months; * People who are injured or have a history of disease in the past six months; * People who have a history of taking medicine in the past six months.

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Conditions

The condition(s) this trial relates to.

cognitive disorder Motor Activity

As listed by the trial registrant

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

Air pollution Cognition Exercise Health promotion

Contacts and locations

Locations

  • Tsinghua University

    Beijing, Beijing Municipality, 100084, China

More trials for these conditions

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