Published on in Vol 23, No 2 (2021): February

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/23701, first published .
Physical Activity Behavior Before, During, and After COVID-19 Restrictions: Longitudinal Smartphone-Tracking Study of Adults in the United Kingdom

Physical Activity Behavior Before, During, and After COVID-19 Restrictions: Longitudinal Smartphone-Tracking Study of Adults in the United Kingdom

Physical Activity Behavior Before, During, and After COVID-19 Restrictions: Longitudinal Smartphone-Tracking Study of Adults in the United Kingdom

Hannah McCarthy 1, MA;  Henry W W Potts 2, BA, MSc, PhD;  Abigail Fisher 3, BSc, PhD

1 University College London , London , GB

2 Institute of Health Informatics, University College London , London , GB

3 Department of Behavioural Science and Health, University College London , London , GB

Corresponding Author: