title: Commentary: Age-related decline in physical activity during adolescence - an opportunity to reflect on intervention design and key research gaps.
authors.forename: Russell
authors.initials: R
authors.lastname: Jago
mesh_terms: D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D010806:Physical Education and Training / Q000639:trends*; D013177:Sports / Q000639:trends*