protocolSection identificationModule nctId: NCT06362655, orgStudyIdInfo id: ANID/FONDECYT 2013/1230801, briefTitle: ACTIBESE Project - Active Behaviour in School Education, acronym: ACTIBESE, statusModule overallStatus: ENROLLING_BY_INVITATION, startDateStruct date: 2023-04-01, primaryCompletionDateStruct date: 2023-12-31, completionDateStruct date: 2025-12-31, studyFirstPostDateStruct date: 2024-04-12, lastUpdatePostDateStruct date: 2024-04-12, sponsorCollaboratorsModule leadSponsor name: Pontificia Universidad Catolica de Valparaiso, class: OTHER, collaborators name: Universidad de La Frontera, descriptionModule briefSummary: The ACtive BEhaviour in School Education (ACTIBESE) project aims to assess and intervene in Chilean schoolchildren's active behaviours by examining the influence of personal, interpersonal, and school factors. This study includes a cross-sectional and intervention study involving 152 schools in the Valparaíso and Araucanía Regions, representing urban and rural areas. Participants, divided into children (8-11 years old) and adolescents (12-17 years old), will undergo a comprehensive evaluation, including sociodemographic characteristics, physical activity (PA) levels, parental and peer support, teaching styles of the teachers, and school environment characteristics.For the cross-sectional study, questionnaires, interviews, accelerometry, and pedometry will be used to collect data on various factors influencing PA in schoolchildren. In the intervention study, a 5-month continuous training program for teachers will be implemented, focusing on improving teaching styles and enhancing teaching competencies related to physical education and health classes. The program aims to positively affect schoolchildren's PA indirectly through improved teaching practices.The research will use mixed models, ANCOVA (Analysis of Covariance), and logistic regressions for data analysis, incorporating multilevel logistic regressions to account for school-level dependencies. The study's outcomes will contribute valuable insights into the complex interactions between school, interpersonal, and personal factors influencing schoolchildren's PA, aiding the development of targeted interventions. This comprehensive approach aligns with the project's goal of fostering a physically active lifestyle among Chilean schoolchildren., conditionsModule conditions: Physical Inactivity, conditions: Child Behavior, conditions: Family Support, designModule studyType: INTERVENTIONAL, phases: NA, designInfo allocation: RANDOMIZED, interventionModel: PARALLEL, interventionModelDescription: Intervention Study, primaryPurpose: BASIC_SCIENCE, maskingInfo masking: NONE, maskingDescription: No apply, enrollmentInfo count: 144, type: ESTIMATED, armsInterventionsModule interventions name: Intervention, outcomesModule primaryOutcomes measure: Physical activity levels, eligibilityModule sex: ALL, minimumAge: 9 Years, maximumAge: 17 Years, stdAges: CHILD, contactsLocationsModule locations facility: IRyS Group, School of Physical Education, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile., city: Viña Del Mar, state: Valparaiso, zip: 2300000, country: Chile, geoPoint lat: -33.02457, lon: -71.55183, hasResults: False