Tests whether greener kindergarten yards affect children's health and development
Tests redesigned, more natural kindergarten yards in children aged 1 to 5.
Key facts
- Who runs it
- Natural Resources Institute Finland
- Where
- Helsinki and Tampere, FinlandSee the 2 sites
- Trial code
- Registry title
- Nationwide Research on the Rewilding of Kindergarten Yards
- Status
- Recruiting
- People taking part
- 320 people, planned
- Started
- 15 May 2024
- Expected to end
- 30 Aug 2027
- Type of study
- Interventional, 2 groups
- Treatments tested
- Biodiversity
- Playground equipment
- Record updated
- 24 June 2024
Who can take part
AI summary
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for children aged 1 to 5 years who attend kindergarten. It studies how rewilding kindergarten yards affects children's health, microbes, allergies, infections and thinking skills.
- Age
- 1 to 5 years
- Sex
- All sexes can join.
- Earlier treatment
- Children who took antibiotics in the year before sampling cannot join.
Main reasons for not taking part
- Use of antibiotics in the year before sampling
The registry criteria, word for word
Show all 2 criteriaShow less
Who can take part
- Attendance in kindergarten
Who cannot take part
- Use of antibiotics in the year before sampling
Check if you might fit
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 1 and 5 years old?
Where in Finland
- Natural Resources Institute FinlandHelsinki, FinlandContact: Marja RoslundTaking people
- Tampere UniversityTampere, FinlandContact: Laura Kummola, PhdTaking people
About the trial
What the trial wants to find out
Biodiversity is essential for nature and human well-being. Land use has reduced biodiversity in cities that is associated with altered commensal microbiota and a rising burden of immunological disorders among urban children.
Read full original descriptionShow less
The investigators will estimate how rewilding of kindergarten yards affects commensal microbiome, prevalence of allergies, asthma, atopic dermatitis and infections, cortisol levels, cognitive skills and plasma cytokine levels of children.
Our specific aims are:
To assess if rewilding diversifies health-associated skin, saliva and gut microbiota and reduces infectious diseases and atopic or allergic symptoms.
Assess whether the rewilding has positive effects on cognitive skills. Assess whether the rewilding changes cortisol and plasma cytokine levels. The investigators will recruit altogether 320 (160 per treatment) study subjects aged between 1-5 to questionnaire study (Task 2), from which 120 study subjects will be analyzed more detailed using microbiological and blood samples (Task 1).
The 2 groups in the trial
- RewildingTreatment being tested
The kindergarten yards are modified with natural elements to increase children's exposure to biodiversity and playground equipment are incorporated to the yards to increase children's physical activity.
Treatment: Biodiversity
- ControlTreatment being tested
The kindergarten yards are not rewilded with natural elements and the biodiversity is low at the yards. Playground equipment are incorporated to the yards to increase children's physical activity.
Treatment: Playground equipment
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorData and sources
- Registry record
- Listed on ClinicalTrials.gov.
- Official title
- Nationwide Research on the Rewilding of Kindergarten Yards - Vahvistu
- Plain-language title
- Tests whether greener kindergarten yards affect children's health and developmentGenerated from the registry record. The registry title is the official one.
- AI summary
- From the trial's eligibility criteria. Read by machine on 12 November 2026.
- Fit questions
- Built from NCT06390878, who can take part
- Record updated
- 24 June 2024