RT Journal Article SR Electronic T1 Is the COVID-19 lockdown nudging people to be more active: a big data analysis JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 1183 OP 1184 DO 10.1136/bjsports-2020-102575 VO 54 IS 20 A1 Ding, Ding A1 del Pozo Cruz, Borja A1 Green, Mark A A1 Bauman, Adrian E YR 2020 UL http://bjsm.bmj.com/content/54/20/1183.abstract AB