Within-Person Associations of Accelerometer-Assessed Physical Activity With Time-Varying Determinants in Older Adults: Time-Based Ecological Momentary Assessment Study

Iris Maes   ¹ , MSc ;   Lieze Mertens   ^{1, 2} , PhD ;   Louise Poppe   ^{2, 3} , PhD ;   Tomas Vetrovsky   ⁴ , PhD ;   Geert Crombez   ⁵ , Prof Dr ;   Femke De Backere   ⁶ , PhD ;   Ruben Brondeel   ⁷ , PhD ;   Delfien Van Dyck   ¹ , Prof Dr

¹ Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium

² Department of Public Health and Primary Care, Ghent University, Ghent, Belgium

³ Fund for Scientific Research Flanders, Brussels, Belgium

⁴ Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic

⁵ Department of Experimental-Clinical and Health Psychology, Ghent University, Ghent, Belgium

⁶ Department of Information Technology, Ghent University, Ghent, Belgium

⁷ Department of Epidemiology of Infectious Diseases, Belgian Institute for Health (Sciensano), Brussels, Belgium