This is a multi-methods two-arm, crossover, analyst-blinded randomized controlled trial with embedded qualitative interviews, enrolling 50 dyads (older adult-care partner). Participants will receive the ACTIVE intervention, which includes a Fitbit smartwatch, motivational text messages to engage in walking exercise, instructional educational videos, and virtual physical therapy sessions. Intervention components will be delivered over 3 weeks, with continuous monitoring of physical activity via Fitbit data, read receipts of the motivational text messages, and log of engagement in the virtual physical therapy and educational videos.
Age ≥65 years.
With or without mild dementia.
Willing to consent to participate in the study or have an LAR that is willing to consent for their participation in the study
Willing to wear a Fitbit smartwatch, receive text messages, watch intervention-related videos, participate in physical therapy, and walking exercise.
Severe cardiac, neurologic, or musculoskeletal condition (including but not limited to recent or untreated fracture in any part of the body)
limiting participation in daily walking or Fitbit smartwatch use.
Moderate to severe dementia (using the clinical dementia rating scale of 2 or higher
Inability to operate or manage a Fitbit smartwatch device (even with care partner support).