RT journal article T1 Effectiveness of a school‑based multimodal intervention on promoting healthy lifestyle behaviours among schoolchildren. Previene‑Cádiz study A1 Aragón Martín, Rubén A1 Gómez‑Sánchez, María del Mar  A1 Martínez Nieto, José Manuel A1 Schwarz‑Rodríguez, Mónica A1 Rodríguez Martín, Amelia A1 Jiménez Pavón, David A2 BiomedicinaBiotecnología y Salud Pública A2 Didáctica de la Educación FísicaPlástica y Musical A2 Enfermería y Fisioterapia K1 Childhood obesity K1 School-based multimodal intervention K1 Healthy lifestyle behaviours K1 School curriculum integration K1 External support K1 Effectiveness assessment AB Aim This study aimed to evaluate the effectiveness of a school-based multimodal intervention targeting healthy lifestyle behaviours among schoolchildren in the province of Cádiz. Subject and methods A quasi-experimental design was employed, comparing outcomes between the experimental and control groups. The intervention adopted a multimodal approach, targeting students, their families and educational institutions. The students participated in a healthy educational programme of 10 sessions and were provided with two workbooks to use at home with their families. Additionally, parents attended three training courses aimed at improving their children’s lifestyle behaviours. The intervention aimed to achieve significant improvements in various health-related parameters such as body composition, physical fitness, physical activity levels, sedentary behaviours, dietary patterns and sleep pattern. Results The results suggested that the intervention produced moderate and at times variable effects in promoting healthier lifestyle behaviours among schoolchildren. While improvements were noted in the experimental group compared to the control group, these did not fully meet the initial expectations. Conclusions This outcome underscores the need for further research and adjustments in implementation, such as the integration of specialized external personnel to support teachers, embedding the intervention into the school curriculum and extending its duration throughout an entire academic year. This study contributes valuable insights into childhood obesity prevention and intervention strategies, paving the way for future research endeavours aimed at promoting the health and well-being of children worldwide. PB Springer SN 1613-2238 YR 2025 FD 2025 LK http://hdl.handle.net/10498/37987 UL http://hdl.handle.net/10498/37987 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 09-nov-2026