Feasibility Test of Personalized (N-of-1) Trials for Increasing Middle-Aged and Older Adults' Physical Activity. - Friel, Ciarán P.; Goodwin, Ashley M.; Robles, Patrick L.; Butler, Mark J.; Pahlevan-Ibrekic, Challace; Duer-Hefele, Joan; Vicari, Frank; Gordon, Samantha; Chandereng, Thevaa; Cheung, Ying Kuen; Suls, Jerry; Davidson, Karina W. (International Journal of Behavioral Medicine, 2025)