[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100562782":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":27,"centralContacts":31,"locations":18,"responsibleParty":37,"collaborators":18,"id":41,"slug":42,"hasResults":43,"nctId":44,"briefTitle":45,"officialTitle":46,"acronym":18,"eligibilityCriteria":47,"healthyVolunteers":48,"sex":49,"minAge":50,"maxAge":51,"enrollmentInfo":52,"targetDuration":18,"studyType":55,"phases":56,"briefSummary":58,"conditions":59,"keywords":18,"overallStatus":62,"whyStopped":18,"lastUpdateSubmitDate":63,"lastUpdatePostDateStruct":64,"startDateStruct":67,"completionDateStruct":69,"leadSponsor":71,"locationsCount":18},{"fullName":5,"class":6},"Anhui Medical University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Intervention: Increase outdoor activity time during specific time periods.","EXPERIMENTAL","The intervention group received an additional 1 hour of outdoor activity during a specific time period on each school day, with the intervention lasting for one year.",[13],"Behavioral: Increase outdoor activity time during specific time periods",{"label":15,"type":16,"description":17,"interventionNames":18},"continued their regular indoor or outdoor routine","NO_INTERVENTION","The control group continued their regular indoor or outdoor routine.",null,[20],{"type":21,"name":22,"description":23,"armGroupLabels":24,"otherNames":25},"BEHAVIORAL","Increase outdoor activity time during specific time periods","The specific time periods of outdoor activity found to be beneficial for myopia prevention will be used as the intervention \"target,\" and a one-year intervention will be initiated.",[9],[26],"Intervention with a specific outdoor activity model",[28],{"name":29,"affiliation":5,"role":30},"Yang Feng","PRINCIPAL_INVESTIGATOR",[32],{"name":33,"role":34,"phone":35,"phoneExt":18,"email":36},"Tao Fang biao, professor","CONTACT","13856986775","taofangbiao@126.com",{"type":38,"investigatorFullName":39,"investigatorTitle":40,"investigatorAffiliation":5,"oldNameTitle":18,"oldOrganization":18},"SPONSOR_INVESTIGATOR","Fangbiao Tao","Professor","100562782","study-of-the-intervention-effect-of-outdoor-activity-period-patterns-in-promoting-myopia-among-preschool-children-100562782",false,"NCT06607640","Study of the Intervention Effect of Outdoor Activity Period Patterns in Promoting Myopia Among Preschool Children","Study on the Association of Time Pattern of Outdoor Activity With Axial Length and Myopia of Preschool Children and Its Intervention","Inclusion Criteria:\n\n* Students and their families were informed and voluntarily participated in the study, with parents signing the informed consent form.\n* Able to cooperate with eye examinations and questionnaires.\n\nExclusion Criteria:\n\n* Communication barriers, unable to cooperate.\n* Strabismus, amblyopia, or any other ocular or systemic diseases that may affect refractive development.\n* Children currently using orthokeratology lenses or rigid contact lenses.\n* Using other interventions (such as acupuncture, massage, medication, ear acupuncture, etc.) to control myopia, apart from school eye exercises.",true,"ALL","4 Years","5 Years",{"count":53,"type":54},210,"ESTIMATED","INTERVENTIONAL",[57],"NA","This study is a randomized controlled trial based on outdoor activity interventions at specific time periods, involving preschool children aged 4 to 5 years. It compared the axial length and myopia incidence between the intervention group and the control group at the 6th and 12th months of the intervention to determine the effect of outdoor activities at specific time periods on the prevention of myopia in preschool children. Additionally, the study investigated the association between outdoor activities at specific time periods and axial length and myopia in preschool children.",[60,61],"Axial Length","Myopia","NOT_YET_RECRUITING","2024-09-19",{"date":65,"type":66},"2024-09-23","ACTUAL",{"date":68,"type":54},"2024-09-21",{"date":70,"type":54},"2025-12-21",{"name":39,"class":6}]