Study design and procedure
fatigue
This study was a multicenter and controlled trial. Fourteen local community facilities and day care centers in northern Taiwan were enrolled between 2018 and 2021. Participants engaged in high-frequency (HF group) or low-frequency (LF group) sessions of combined physical and cognitive training. For the HF group, we chose a small number of sessions (3 sessions/week) to avoid fatigue and excessive stress caused by high-frequency training [Flowchart of participant disposition throughout the study