The Effects of Multi-Theory Model–Based Behavior Change Intervention with Staircase Approach on Sedentary Lifestyle Among Community-Dwelling Older Adults: Study Protocol for a Randomized Controlled Trial

This study uses a multi-theory model as its theoretical framework and adopts stepped sedentary lifestyle change as the intensity gradient of exercise behavior, creating a behavioral change pattern from sitting to standing and movement to light-intensity physical activity, to moderate-to-vigorous-intensity physical activity, and ultimately improving the sedentary lifestyle and obtaining health benefits, to provide community-dwelling older adults with individualized behavior change programs that are easy to adhere to and more applicable to daily activity patterns.