Vorlíček, MDygrýn, JJanda, DVoráčová, JDuncan, SSigmund, ESigmundová, D2025-03-032025-03-032025-02-07Frontiers in Sports and Active Living, ISSN: 2624-9367 (Print); 2624-9367 (Online), Frontiers Media SA, 7, 1530398-. doi: 10.3389/fspor.2025.15303982624-93672624-9367http://hdl.handle.net/10292/18798This study investigated the combined impact of family dynamics and school environments on physical activity levels in children aged 3–9 years across distinct segments of the school day. Conducted as part of the FAMIPASS project in the Czech Republic, the study collected data in 2022 and 2023 from 502 families affiliated with 36 preschools and primary schools. The device-based monitoring of movement behaviors in children and their parents was conducted over a one-week period using ActiGraph accelerometers, complemented by detailed family questionnaires. Regression analysis revealed that parental physical activity, BMI, and education level significantly influenced children's moderate-to-vigorous physical activity, with educated parents more likely to raise active children. Active transport to school emerged as a key factor associated with higher child activity levels specifically in the time segment before school. This research underscores the role of family and school as critical arenas for promoting health and physical activity. These insights highlight the need for integrated family-school strategies to foster healthy activity habits in children, thereby laying the groundwork for a more active generation.© 2025 Vorlíček, Dygrýn, Janda, Voráčová, Duncan, Sigmund and Sigmundová. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.http://creativecommons.org/licenses/by/4.0/accelerometrychildfamily characteristicsmovement behaviorspreschoolrecommendations for physical activity4206 Public Health42 Health SciencesPreventionMinority HealthBehavioral and Social SciencePhysical ActivityHealth DisparitiesPediatricCardiovascular3.1 Primary prevention interventions to modify behaviours or promote wellbeingCardiovascularOral and gastrointestinalCancerMetabolic and endocrine4207 Sports science and exerciseJournal ArticleOpenAccess10.3389/fspor.2025.1530398