Sari, Ebru SonmezTerzi, HandanSahin, Didem2026-02-282026-02-2820250737-12091525-1446https://doi.org/10.1111/phn.13446https://hdl.handle.net/20.500.12403/6078ObjectiveTo measure a multivariate analysis of social media addiction and cognitive-behavioral physical activity associated with several sociodemographic characteristics in adolescent girls.Design and MethodsA cross-sectional study. The sample consisted of adolescent girls studying in a vocational high-school in the Middle-Black-Sea region in T & uuml;rkiye (n = 333). A questionnaire, Social Media Addiction Scale-for-Adolescents (SMAS-A), and Cognitive-Behavioral Physical Activity Questionnaire (CBPAQ) were used to collect the data.ResultsThe mean age was 15.35 (SD = 1.15), and 29.4% were the ninth-class students. Of the adolescent girls, 85.9% were social-media users, 59.8% used the internet 2-hours-or-more/daily, 67.9% declared themselves as moderately-active. The mean scores of the SMAS-A and the CBPAQ were 3.40 (SD = 1.61) and 21.03 (SD = 7.64), respectively. There was a significantly-negative correlation between cognitive-behavioral physical activity and social-media addiction levels. The One-Way MANOVA results showed significant differences in the academic level, family income, mother education, and physical activity measurement application usage affected to cognitive-behavioral physical activity. Social media usage habit affected to the social media addiction level.ConclusionsDaily internet usage time and self-declared physical activity level were the mutually affected factors. School nurses should act to improve healthy social media usage habits to promote well-being and encourage the positive attitudes towards regular physical activity in this population.eninfo:eu-repo/semantics/openAccessaddictive behavioradolescenceadolescent behaviorcommunity-participatory researchexercisesocial mediaArticle421616910.1111/phn.13446394029022-s2.0-85206264727Q2WOS:001330993200001Q3