2025-08-202025-08-202025-07-29https://repositorio.ifal.edu.br/handle/123456789/1153This thesis investigates the challenges associated with sedentary behavior among adolescents aged 15 to 17 who enrolled in the Integrated Technical High School Program in the Building Construction course at the Federal Institute of Alagoas (IFAL) in 2024. Using a quantitative approach, the research analyzes data collected through questionnaires from 40 students with a Body Mass Index (BMI) ≥ 25, across the campuses of Coruripe, Maceió, and Palmeira dos Índios. The results reveal a high prevalence of sedentary behavior, especially among female students, which correlates with inadequate dietary practices and a lack of regular physical activity. The theoretical framework addresses key concepts such as sedentary lifestyle, adolescent health, and the environmental and social factors that influence this behavior. The identified difficulties include the absence of physical activity, poor nutrition, and inadequate school infrastructure. Although students generally perceive physical spaces positively, access to these facilities is limited, and many do not engage in the recommended amount of exercise. The conclusion emphasizes the urgency of institutional strategies to promote health and physical activity, highlighting the role of education as a crucial transformative agent in combating youth sedentarism. The study underscores the importance of integrated and comprehensive interventions that consider both structural and behavioral aspects, aiming to improve adolescents’ quality of life and well-being in the school environment. Such actions are essential for fostering healthy habits and reducing the risks associated with a sedentarylifestyle in youth.ptAdolescentesAtividade FísicaSedentarismoSaúde na escolaEnsino técnicoAdolescentsPhysical activitySedentary BehaviorSchool HealthTechnical escoolTeseCIÊNCIAS HUMANAS: EDUCAÇÃO