biostudies-literatureUnknown9(12)Saucedo-Araujo RGActive commuting to and/or from school (ACS) is an opportunity to increase daily physical activity (PA) levels in young people. Mobile-device interventions focused on promoting the practice of health-related PA can be more cost-effective than traditional interventions in this population.<h4>Objective</h4>To analyze the adolescents' opinion of the mobile application (app) Mystic School, which was designed to promote ACS in Spanish adolescents.<h4>Methods</h4>A total of 44 students (14-15 years old) from Granada and Jaén participated in the test of the Mystic School app during two phases: phase 1 (<i>n</i> = 10) for 2 weeks and phase 2 (<i>n</i> = 34) for 1 month. Each phase included an app presentation, a follow-up, and focus group sessions. The qualitative analysis was carried out through Children (Basel, Switzerland)1997https://www.ebi.ac.uk/biostudies/studies/S-EPMC9776541biostudies-literatureTesting the Mystic School Mobile Application to Promote Active Commuting to School in Spanish Adolescents: The PACO Study.PMC9776541Chillon PBarranco-Ruiz YMHuertas-Delgado FJPerez-Lopez IJSaucedo-Araujo RGHerrador-Colmenero MAznar-Lain SfalseTesting the Mystic School Mobile Application to Promote Active Commuting to School in Spanish Adolescents: The PACO Study.Active commuting to and/or from school (ACS) is an opportunity to increase daily physical activity (PA) levels in young people. Mobile-device interventions focused on promoting the practice of health-related PA can be more cost-effective than traditional interventions in this population.<h4>Objective</h4>To analyze the adolescents' opinion of the mobile application (app) Mystic School, which was designed to promote ACS in Spanish adolescents.<h4>Methods</h4>A total of 44 students (14-15 years old) from Granada and Jaén participated in the test of the Mystic School app during two phases: phase 1 (<i>n</i> = 10) for 2 weeks and phase 2 (<i>n</i> = 34) for 1 month. Each phase included an app presentation, a follow-up, and focus group sessions. The qualitative analysis was carried out through 2022-01-01T00:00:00Z2022 Dec2025-04-22T13:24:42.254Z2025-04-06T00:39:01.163ZS-EPMC97765413655344010.3390/children9121997