The primary objective of the project is to establish whether increasing physical activity can promote mental well-being in adolescents who are already displaying some depressive symptoms.~A further objective is to evaluate the feasibility of a novel self-motivated physical activity intervention, which has been designed for this project.~The final objective of this project is to investigate alternative intervention delivery modes, for an adolescent sample with subclinical depressive symptomatology, i.e., presenting with some depression symptoms but not at a level where major depressive disorder would be diagnosed. We aim to compare the effect of a completely mediated delivery approach for physical activity (i.e., no researcher contact) and a mediated intervention with face-to-face contact and fortnightly check-in telephone calls.
The purpose of this study is to determine whether physical activity prevents development of depressive symptoms in adolescents.