1	built environment OR neighborhood) AND (physical activity OR walk*) AND (old* OR elder* OR adult*) NOT adolescent* NOT therapy NOT fruit NOT child* Limits: years 2004–2019, review	304
2	[Title review] AND [All built] AND [[All environment] OR [All neighborhood]] AND [All physical] AND [[All activity] OR [All walk*]] AND [[All old*] OR [All elder*] OR [All adult*]] AND NOT [All adolescent*] AND NOT [All therapy] AND NOT [All fruit] AND NOT [All child*] Limits: years 2004–2019, research articles	124