Effects of an Educational Hybrid Physical Education Program on Physical Fitness, Body Composition and Sedentary and Physical Activity Times in Adolescents: The Seneb’s Enigma Melero Cañas, David Morales Baños, Vicente Manzano Sánchez, David Navarro Ardoy, Daniel Valero Valenzuela, Alfonso Physical health Body mass index Afterschool period Model-based learning Sedentary behaviors Physical activity (PA), body composition and sedentary behavior may affect the health of children. Therefore, this study examined the effect of an educational hybrid physical education (PE) program on physical fitness (PF), body composition and sedentary and PA times in adolescents. A 9-month group-randomized controlled trial was conducted in 150 participants (age: 14.63 ± 1.38 years) allocated into the control group (CG, n = 37) and experimental group (EG, n = 113). Cardiorespiratory fitness, speed, strength, agility, flexibility and body mass index (BMI) were assessed through previously validated field tests. Sedentary time, PA at school and afterschool were evaluated with the Youth Activity Profile-Spain questionnaire. Significant differences were observed concerning to the CG in APA-weekend (p = 0.044), speed-agility (p = 0.005) and agility (p = 0.008). Regarding the intervention, cardiorespiratory fitness (p = 0.000), speedagility (p = 0.000), strength (p = 0.000), flexibility (p = 0.000), agility (p = 0.000), PA in school (p = 0.011), APA-weekday (p = 0.001), APA-weekend (p = 0.000), APAweek (p = 0.000), and sedentary time (p = 0.000) increased significantly in the EG. The use of a hybrid program based on teaching personal and social responsibility and gamification strategies produced enhancements in cardiorespiratory fitness, agility, speed, APA-weekdays and APA-weekends, reducing the sedentary time. 2021-03-02T12:22:11Z 2021-03-02T12:22:11Z 2021 journal article Melero-Cañas D, Morales-Baños V, Manzano-Sánchez D, Navarro-Ardoy D and Valero-Valenzuela A (2021) Effects of an Educational Hybrid Physical Education Program on Physical Fitness, Body Composition and Sedentary and Physical Activity Times in Adolescents: The Seneb’s Enigma. Front. Psychol. 11:629335. doi: 10.3389/fpsyg.2020.629335 http://hdl.handle.net/10481/66785 10.3389/fpsyg.2020.629335 eng http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España FRONTIERS MEDIA SA