Fig. 1

The upper portion illustrates the phased scale-up of Choose to Move. Black arrows between phase 2 and 3, and between phase 3 and 4 indicate the formal and systematic adaptation of the model to enhance fit and optimize the model. We use data from phases 1 and 2 in this manuscript. The lower panel illustrates the time points for one Choose to Move program. Data collection (surveys - all participants; interviews - subset) occurred at 0, 3 and 6 months. Lower panel is adapted with permission from “Implementation of a co-designed physical activity program for older adults: positive impact when delivered at scale,” by McKay H, Nettlefold L, Bauman A, Hoy C, Gray SM, Lau E, and Sims-Gould J, 2018, BMC public health, 18 [1]:1289. CC BY 4.0