Health TrialsbyHealthPanel

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

ConditionsHeart RateAll-day StepsDistance WalkedActive MinutesModerate-intensity Activity MinutesVigorous-intensity Activity DurationSleep QuantityTime in Sleep StagesAwake DurationSleep Score
Trial statusNot yet recruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18+
SponsorUniversity of Auckland, New Zealand

About this trial

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.

Eligibility criteria

This trial accepts healthy volunteers

Qualifiers

Permanent household resident

Disqualifiers

Roof damage, inaccessible or instability of roof adversely affecting cool roof coating application.

Participant unable to provide written/verbal informed consent. Participants will be excluded if they are not willing or able to wear a smartwatch.

Participants will be excluded if they do not have a smartphone with an internet connection that can connect to the smartwatch.

Only one participant per household.

Trial design

Design model

Parallel

Treatments tested in this trial

  • Cool roof

    Other intervention

    Cool roofs are a heat-reflecting material that can be applied to existing household roofing in the form of a liquid-applied membrane. Cool roofs work by increasing solar reflectance (the ability to reflect the visible wavelengths of sunlight, reducing heat transfer to the surface) and thermal emittance (the ability to radiate absorbed solar energy) thereby reducing the amount of heat transferred into the home.

Treatment groups

800 Participants
are divided into 2 treatment groups
Group A: Cool roofExperimental treatment 1 intervention
Group B: No cool roofNo intervention 0 interventions

Trial outcomes

Primary outcomes

1

Heart rate

Heart rate in beats per minute measured at 15-second intervals using Garmin Vivosmart 5 devices.

Time frame
Smartwatches will be worn for two consecutive weeks per month. Eight measurement points will be taken: one at baseline and seven over 12 months, covering three consecutive hottest months and four alternate months.

Secondary outcomes

1

All-day steps

The number of steps measured daily using Garmin Vivosmart 5 devices.

Time frame
Smartwatches will be worn for two consecutive weeks per month. Eight measurement points will be taken: one at baseline and seven over 12 months, covering three consecutive hottest months and four alternate months.
2

Active minutes

The total number of minutes of active exercise daily using Garmin Vivosmart 5 devices.

Time frame
Smartwatches will be worn for two consecutive weeks per month. Eight measurement points will be taken: one at baseline and seven over 12 months, covering three consecutive hottest months and four alternate months.
3

Distance walked

The total distance walked daily using Garmin Vivosmart 5 devices.

Time frame
Smartwatches will be worn for two consecutive weeks per month. Eight measurement points will be taken: one at baseline and seven over 12 months, covering three consecutive hottest months and four alternate months.
4

Moderate-intensity activity minutes

The total number of minutes of moderate-intensity activity daily using Garmin Vivosmart 5 devices.

Time frame
Smartwatches will be worn for two consecutive weeks per month. Eight measurement points will be taken: one at barements will be taken continuously for 12 months. Participants will be asked to wear their smartwatch for at least two weeks every month.

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

University of Auckland, New Zealand

Lead sponsor

Heidelberg University

Collaborator

London School of Hygiene and Tropical Medicine

Collaborator

Rutgers University

Collaborator

Labfront

Collaborator

Wellcome Trust

Collaborator

EPS

Collaborator

Universidad de Colima

Collaborator

Source ClinicalTrials.gov

This trial is not recruiting at the moment. You can still explore other options: