Within-Group Changes*and Effect Sizes in Participant and Caregiver Measures, Group 1.

SPPB, Short Physical Performance Battery; ADAS-cog, Alzheimer’s Disease Assessment Scale—cognitive subscale; QOL-AD, Quality of Life in Alzheimer’s Disease scale; SFT, Senior Fitness Test; ADCS-ADL, Alzheimer’s Disease Cooperative Study—Activities of Daily Living scale; NPI-FS, Neuropsychiatric Inventory—frequency*severity subscale; NPI-CD, Neuropsychiatric Inventory—caregiver distress subscale; CBI, Caregiver Burden Inventory.a: higher scores better;b: lower scores better.*Means (SD).**Effect size calculated by subtracting mean change from 19 to 36 weeks from mean change from 0 to 18 weeks and dividing by the baseline standard deviation; + values favor PLIÉ, and − values favor Usual Care. Bolded effect sizes favor PLIÉ and were ≥ 0.25. Data missing as follows: SFT back scratch (n = 1, both time points) SFT—8 foot up and go (n = 1, 0 to 18 weeks), NPI-FS (n = 1, 19 to 36 weeks).Within-Group Changes*and Effect Sizes in Participant and Caregiver Measures, Group 1.