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Assessing the Effect of Cool Roofs on Health Using Smartwatches in Colima, Mexico

Study acronym: REFLECT
StatusNot Yet Recruiting
PhaseNot applicable
Started
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Record History

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  1. Start date: Mar 1, 2026 to Apr 1, 2026v3 Show 4 more changesShow less
    • Study description shortened, about 36 words
    • Study site revised
    • Collaborators: 8 to 7
    • Study title revised
  2. Primary and study completion dates: May 1, 2026 to Sep 1, 2027
    • Start date: Mar 1, 2025 to Mar 1, 2026
    v2
  3. Study First Submitted
  • Stopped: an ongoing trial was terminated, suspended or withdrawn.
  • Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
  • Minor: routine progress and housekeeping, such as sites added or enrollment closed.
Ambient air temperatures in Mexico have broken record highs in 2024. Solutions are needed to build heat resilience in communities and adapt to increasing heat from climate change. Sunlight-reflecting cool roof coatings may passively reduce indoor temperatures and energy use to protect home occupants from extreme heat. Occupants living in poor housing conditions in the northern zone of Mexico are susceptible to increased heat exposure. Heat exposure can instigate and worsen numerous physical, mental and social health conditions. The worst adverse health effects are experienced in communities that are least able to adapt to heat exposure. By reducing indoor temperatures, cool roof use may promote heart health, sleep and physical activity in household occupants. The long-term research goal of the investigators is to identify viable passive housing adaptation technologies with proven health benefits to reduce the burden of heat stress in communities affected by heat in Mexico. To meet this goal, the investigators will conduct a randomized controlled trial to establish the effects of cool roof use on heart rate, sleep and physical activity in Colima, Mexico.
Trial Details
NCT Number NCT06831006
Lead Sponsor University of Auckland, New Zealand
Collaborators: Heidelberg University, London School of Hygiene and Tropical Medicine, Rutgers University, Labfront, Wellcome Trust, EPS, Universidad de Colima
Conditions
(from sponsor)		 Heart Rate, All-day Steps, Distance Walked, Active Minutes, Moderate-intensity Activity Minutes, Vigorous-intensity Activity Duration, Sleep Quantity, Time in Sleep Stages +2 more
Related terms Heat Stress Disorders, Motor Activity
Enrollment 800 participants
Start Date
Primary Completion (estimated)
Study Completion (estimated)
Updated on ClinicalTrials.gov