[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100579954":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":23,"centralContacts":27,"locations":37,"responsibleParty":55,"collaborators":58,"id":74,"slug":75,"hasResults":76,"nctId":77,"briefTitle":78,"officialTitle":79,"acronym":80,"eligibilityCriteria":81,"healthyVolunteers":82,"sex":83,"minAge":84,"maxAge":18,"enrollmentInfo":85,"targetDuration":18,"studyType":88,"phases":89,"briefSummary":91,"conditions":92,"keywords":103,"overallStatus":114,"whyStopped":18,"lastUpdateSubmitDate":115,"lastUpdatePostDateStruct":116,"startDateStruct":119,"completionDateStruct":121,"leadSponsor":123,"locationsCount":124},{"fullName":5,"class":6},"University of Auckland, New Zealand","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Cool roof","EXPERIMENTAL","Households will receive sunlight reflecting 'cool roof' coating on their roofs.",[13],"Other: Cool roof",{"label":15,"type":16,"description":17,"interventionNames":18},"No cool roof","NO_INTERVENTION","No cool roof application. Households will keep their original roofing for the duration of the trial.",null,[20],{"type":6,"name":9,"description":21,"armGroupLabels":22,"otherNames":18},"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.",[9],[24],{"name":25,"affiliation":5,"role":26},"Collin Tukuitonga, Sir. Dr.","PRINCIPAL_INVESTIGATOR",[28,33],{"name":29,"role":30,"phone":31,"phoneExt":18,"email":32},"Aditi Bunker, Dr","CONTACT","+49 6221 565344","aditi.bunker@uni-heidelberg.de",{"name":25,"role":30,"phone":34,"phoneExt":35,"email":36},"+6493737599","Ext. 89612","collin.tukuitonga@auckland.ac.nz",[38],{"facility":39,"status":18,"city":40,"state":18,"zip":18,"country":41,"countryCode":42,"cosmosGeoPoint":43,"geoPoint":48,"contacts":49},"Universidad de Colima","Colima","Mexico","MX",{"type":44,"coordinates":45},"Point",[46,47],-103.7127,19.24473,{"lat":47,"lon":46},[50,54],{"name":51,"role":30,"phone":52,"phoneExt":18,"email":53},"Oliver Mendoza","+523121447489","oliver@ucol.mx",{"name":51,"role":26,"phone":18,"phoneExt":18,"email":18},{"type":26,"investigatorFullName":56,"investigatorTitle":57,"investigatorAffiliation":5,"oldNameTitle":18,"oldOrganization":18},"Aditi Bunker","Principal Investigator",[59,61,63,65,68,70,73],{"name":60,"class":6},"Heidelberg University",{"name":62,"class":6},"London School of Hygiene and Tropical Medicine",{"name":64,"class":6},"Rutgers University",{"name":66,"class":67},"Labfront","INDUSTRY",{"name":69,"class":6},"Wellcome Trust",{"name":71,"class":72},"EPS","UNKNOWN",{"name":39,"class":6},"100579954","assessing-the-effect-of-cool-roofs-on-health-using-smartwatches-in-colima-mexico-100579954",false,"NCT06831006","Assessing the Effect of Cool Roofs on Health Using Smartwatches in Colima, Mexico","A Randomized Controlled Trial (RCT) Evaluating the Effects of Cool Roofs on Health Outcomes Using Smartwatches in Colima, Mexico","REFLECT","Inclusion Criteria:\n\n* Permanent household resident\n\nExclusion Criteria:\n\n* Roof damage, inaccessible or instability of roof adversely affecting cool roof coating application.\n* Participant unable to provide written\u002Fverbal informed consent. Participants will be excluded if they are not willing or able to wear a smartwatch.\n* Participants will be excluded if they do not have a smartphone with an internet connection that can connect to the smartwatch.\n* Only one participant per household.",true,"ALL","18 Years",{"count":86,"type":87},800,"ESTIMATED","INTERVENTIONAL",[90],"NA","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.\n\nHeat 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.\n\nThe 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.",[93,94,95,96,97,98,99,100,101,102],"Heart Rate","All-day Steps","Distance Walked","Active Minutes","Moderate-intensity Activity Minutes","Vigorous-intensity Activity Duration","Sleep Quantity","Time in Sleep Stages","Awake Duration","Sleep Score",[104,105,106,107,108,109,110,111,112,9,113],"Hot Temperature","Humidity","Housing","Wearable","Smartwatch","Heart rate","Cardiovascular","Physical activity","Sleep","Heat stress","NOT_YET_RECRUITING","2026-03-09",{"date":117,"type":118},"2026-03-11","ACTUAL",{"date":120,"type":87},"2026-04-01",{"date":122,"type":87},"2027-09-01",{"name":5,"class":6},1]