Neighbourhoods for Active Kids: study protocol for a cross-sectional examination of neighbourhood features and children’s physical activity, active travel, independent mobility and body size
New Zealand children’s physical activity, including independent mobility and active travel, has declined markedly over recent decades. The Neighbourhoods for Active Kids (NfAK) study examines how neighbourhood built environments are associated with the independent mobility, active travel, physical activity and neighbourhood experiences of children aged 9–12 years in primary and intermediate schools across Auckland, New Zealand’s largest city.