Precision exercise in older adults with early Alzheimer's disease: The study protocol of the FIT-AD Sequential, Multiple Assignment, Randomized Trial (SMART). - Yu, Fang; Todd, Michael; Salisbury, Dereck; Maxfield, Molly; Pruzin, Jeremy; Joseph, Rodney P.; Su, Yi; Li, Danni; Baena, Elsa; Coon, David (Trials, 2025)