Primary objective

1. Assess the effects of interventions targeting increased use of the built environment for overall PA in both adults and children.

Secondary objectives

1. Compare the effects of interventions encouraging the use of existing built environments with interventions that, with or without involving informational approaches, involve building or regenerating environments.
2. Describe other health benefits (e.g. mental health, risk factors for cardiovascular and other diseases) where outcomes are available.
3. Explore whether the effects of interventions differ between adults and children and between advantaged and disadvantaged populations.
4. Identify gaps in the evidence and highlight future research needs in the area.