[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100633227":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":25,"centralContacts":39,"locations":49,"responsibleParty":65,"collaborators":68,"id":72,"slug":73,"hasResults":74,"nctId":75,"briefTitle":76,"officialTitle":67,"acronym":77,"eligibilityCriteria":78,"healthyVolunteers":79,"sex":80,"minAge":18,"maxAge":18,"enrollmentInfo":81,"targetDuration":18,"studyType":84,"phases":85,"briefSummary":87,"conditions":88,"keywords":93,"overallStatus":99,"whyStopped":18,"lastUpdateSubmitDate":100,"lastUpdatePostDateStruct":101,"startDateStruct":104,"completionDateStruct":106,"leadSponsor":108,"locationsCount":109},{"fullName":5,"class":6},"Instituto Politécnico de Setúbal","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"MAFF Intervention (School-to-Home Micro-Intervention)","EXPERIMENTAL","Participants will receive a 12-week structured intervention combining school-based and home-based components:\n\nTwo weekly 10-15 minute micro-activity sessions delivered in the classroom Two weekly structured home-based movement challenges involving caregivers Adherence monitoring through logs Fortnightly feedback to support engagement Fidelity monitoring using structured checklists\n\nThe intervention focuses on reducing sedentary behaviour by fragmenting prolonged sitting and promoting short bouts of physical activity integrated into daily routines.",[13],"Behavioral: Name: MAFF (Methodology for Family Physical Activity)",{"label":15,"type":16,"description":17,"interventionNames":18},"Control (Usual Practice \u002F Wait-list)","NO_INTERVENTION","The control group will continue usual school activities without any structured intervention.\n\nParticipants will: Complete all assessment timepoints (baseline, post-intervention, follow-up) Not receive the MAFF programme during the study period Post-trial: The MAFF intervention will be offered to control group participants after completion of the study.",null,[20],{"type":21,"name":22,"description":23,"armGroupLabels":24,"otherNames":18},"BEHAVIORAL","Name: MAFF (Methodology for Family Physical Activity)","MAFF is a low-cost, scalable behavioural intervention designed to reduce sedentary time and increase physical activity in children through a school-to-home transfer model.\n\nIt integrates:\n\nStructured micro-activity breaks in classroom settings Family-based movement challenges to reinforce behaviour at home Behavioural mechanisms grounded in the COM-B model (capability, opportunity, motivation) Ecological reinforcement through repeated exposure across contexts (school and family)\n\nNo specialised equipment is required.",[9],[26,29,33,35,37],{"name":27,"affiliation":5,"role":28},"Susana Garradas, PhD","PRINCIPAL_INVESTIGATOR",{"name":30,"affiliation":31,"role":32},"Carolina A Cabo, Master","University of Évora","STUDY_DIRECTOR",{"name":34,"affiliation":5,"role":32},"Mário C. Espada, PhD",{"name":36,"affiliation":5,"role":32},"Fernando Santos, PhD",{"name":38,"affiliation":31,"role":32},"Jose A Parraca, PhD",[40,45],{"name":41,"role":42,"phone":43,"phoneExt":18,"email":44},"Susana Dr. Garradas, PhD","CONTACT","964188877","susana.garradas@ese.ips.pt",{"name":46,"role":42,"phone":47,"phoneExt":18,"email":48},"Carolina Dr Cabo, Master","919564243","carolinaacabo@gmail.com",[50],{"facility":5,"status":18,"city":51,"state":18,"zip":52,"country":53,"countryCode":54,"cosmosGeoPoint":55,"geoPoint":60,"contacts":61},"Setúbal","2914-504","Portugal","PT",{"type":56,"coordinates":57},"Point",[58,59],-8.8882,38.5244,{"lat":59,"lon":58},[62,63],{"name":27,"role":42,"phone":43,"phoneExt":18,"email":44},{"name":64,"role":42,"phone":47,"phoneExt":18,"email":48},"Carolina Alexandra Cabo, Master",{"type":28,"investigatorFullName":66,"investigatorTitle":67,"investigatorAffiliation":5,"oldNameTitle":18,"oldOrganization":18},"Susana Sofia Martins Garradas","MAFF-CRT: School-to-Home Trial to Reduce Sedentary Behaviour in Children",[69,71],{"name":70,"class":6},"Instituto Politécnico de Setúbal. Escola Superior de Saúde.",{"name":31,"class":6},"100633227","maff-crt-reducing-sedentary-behaviour-in-children-100633227",false,"NCT07523945","MAFF-CRT: Reducing Sedentary Behaviour in Children","MAFF-CRT","Inclusion Criteria:\n\n* Enrolled in participating Portuguese public schools\n* Written informed consent provided by a parent or legal guardian\n* Assent provided by the child\n* Able to participate in light-to-moderate physical activity as part of normal school activities\n\nExclusion Criteria:\n\n* Medical conditions or physical limitations that contraindicate participation in physical activity\n* Cognitive, developmental, or behavioural conditions that would prevent understanding or adherence to the intervention procedures (as assessed by school staff)\n* Lack of parental\u002Flegal guardian consent\n* Concurrent participation in another structured physical activity or behavioural intervention study",true,"ALL",{"count":82,"type":83},200,"ESTIMATED","INTERVENTIONAL",[86],"NA","Children today spend many hours sitting at school and at home, often in front of screens. Prolonged sitting in childhood increases the risk of future health problems such as diabetes, heart disease and poor mental wellbeing. MAFF is a simple school-to-home programme that teaches short, practical movement breaks in the classroom and encourages families to repeat them together at home through structured weekly challenges. Over 12 weeks, we will compare classes using MAFF with classes continuing as usual to assess whether children sit less, move more and improve their wellbeing. If effective, MAFF will provide schools and communities with an easy-to-implement toolkit to promote healthier and more active families.",[89,90,91,92],"Sedentary Behaviors","Physical Inactivity","Child Health","Lifestyle (Sedentary Behavior and Physical Activity)",[94,95,96,97,98],"sedentary behaviour","physical activity","school-based intervention","family-based intervention","randomized controlled trial","NOT_YET_RECRUITING","2026-04-05",{"date":102,"type":103},"2026-04-13","ACTUAL",{"date":105,"type":83},"2026-11-30",{"date":107,"type":83},"2028-12-02",{"name":5,"class":6},1]