Clinical trial Recruiting at 1 site Interventional Ages 8 to 13

Reconstructing schoolyards to boost children's physical activity and address climate change

Official title: Skolgårdsprojketet: Bygga om skolgårdar i Stockholm Med grönska för Att öka Skolbarns Fysisk Aktivitet Och hälsa Samt Mildra klimatförändringarna i städer

Run by Karolinska Institutet · NCT05865782 · Data updated 2026-11-12

This study is testing if making schoolyards greener can help kids in Stockholm be more active and improve their health over three years.

Quick facts

Study typeInterventional
Ages8 Years to 13 Years
SexAll
Enrollment3600 (estimated)
SponsorKarolinska Institutet
Academic / other
Locations1 site (Stockholm)
StatusRecruiting
StartedMay 22, 2024
Main results expectedMay 30, 2027
Study endsNovember 30, 2027
Registry record updatedJune 20, 2024
Trial IDNCT05865782 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are schoolchildren aged 8-13 years enrolled in selected Stockholm public schools.

Probably not a fit

Children who are not enrolled in the participating schools or do not fall within the specified age range will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This project aims to enhance physical activity levels among school-aged children by reconstructing schoolyards with greenery in Stockholm. It employs a quasi-experimental stepped-wedge design, evaluating 15 public schoolyards over three years, with schools acting as both intervention and control sites. The study will assess various health outcomes, including physical activity, blood pressure, BMI, mental health, sleep, and sick leave among participating children. Data will be collected at baseline and one year post-intervention to determine the effectiveness and cost-effectiveness of the schoolyard reconstructions.

Why it matters

Potential benefit: If successful, this initiative could significantly improve physical health and mental well-being among schoolchildren while also contributing to environmental sustainability.

How similar studies have gone: Other studies have shown positive outcomes from similar interventions aimed at increasing physical activity through environmental modifications, suggesting a promising approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

On school level:

-School selected for schoolyard reconstruction by the City of Stockholm

On individual level (schoolchildren):

* Enrolled in participating school
* 8-13 years old at the time of study start
* In 2nd or 5th grade
* Parents signed informed consent

Exclusion Criteria:

On school level:

-School not selected for schoolyard reconstruction by the City of Stockholm

On individual level (schoolchildren):

* Not enrolled in participating school
* Outside 8-13 years old age range and/or not in 2nd or 5th grade
* Parents declined informed consent

Where it's running

  • Karolinska Institutet
    Stockholm, Sweden
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.