Berger, N; Lewis, D; Quartagno, M; Njagi, EN; Cummins, S; (2019) Longitudinal associations between perceptions of the neighbourhood environment and physical activity in adolescents: evidence from the Olympic Regeneration in East London (ORiEL) study. BMC Public Health , 19 , Article 1760. 10.1186/s12889-019-8003-7.