How indoor overheating affects children's bodies and thinking
Official title: A Preliminary Study Assessing the Effectiveness of a 26 °C Indoor Temperature Limit on Physiological Responses in Children
Run by University of Ottawa · NCT07261202 · Data updated 2026-11-12
This project will test whether keeping indoor air at or below 26 °C (about 45% relative humidity) reduces heat-related physical strain and short-term cognitive changes in children.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 10 Years to 15 Years |
| Sex | All |
| Enrollment | 10 (estimated) |
| Sponsor | University of Ottawa Academic / other |
| Locations | 1 site (Ottawa, Ontario) |
| Status | Recruiting |
| Started | November 8, 2025 |
| Main results expected | June 1, 2026 |
| Study ends | December 31, 2026 |
| Registry record updated | April 23, 2026 |
| Trial ID | NCT07261202 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Healthy children who speak English or French, can provide informed assent, do not have chronic health conditions, and are not engaged in heavy endurance training are the ideal candidates.
✕Probably not a fit
Children with chronic medical conditions, those who train vigorously for endurance sports, or those who cannot undertake typical physical activity may be excluded and are unlikely to benefit from this protocol.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Children will be exposed in a controlled setting to simulated indoor overheating conditions and to an indoor environment held at or below 26 °C, with physiological measurements and cognitive testing before, during, and after exposure. The protocol excludes children with chronic health conditions, those engaged in high-volume endurance training, or those with restrictions to physical activity, and requires English or French assent. Investigators will monitor core temperature, heart rate, sweating or other thermoregulatory indicators, and short-term measures of attention and mood to quantify strain. Results will be used to inform practical indoor temperature guidance for child-occupied spaces.
Why it matters
Potential benefit: If successful, this could support a clear indoor temperature guideline (around 26 °C) to reduce heat-related physiological strain and cognitive effects in children.
How similar studies have gone: While adult studies and observational work in children link heat exposure to physiological and cognitive effects, controlled experimental data in children are limited, so this controlled indoor exposure approach is partly novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * English or French speaking. * Ability to provide informed assent. Exclusion Criteria: * Chronic health conditions * Endurance exercise training (greater than 3 sessions of vigorous exercise training per week for 30 minutes or more) * Restrictions to physical activity
Where it's running
-
University of Ottawa
Ottawa, Ontario, Canada Recruiting
Study contacts
- Principal investigator: Glen P Kenny, PhD — University of Ottawa
- Study coordinator: Glen P Kenny, PhD
- Email: gkenny@uottawa.ca
- Phone: 613-562-5800
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.