VR-based Mindfulness for Dementia Caregivers in the Home Environment (Mind-body Interventions)

To explore the feasibility, acceptability, and potential effectiveness among dementia caregivers of the mindfulness-based interventions delivered by VR technology (VR-based MBI) in improving psychological well-being and caregiver-recipient relationship.

This study hypothesized that caregivers in the VR-based MBI group will have a greater improvement in psychological wellbeing than those in the audio-based MBI group and the waitlist care-as-usual group.

This is a 3-arm, parallel, single-blinded, pilot randomised control trial comparing VR-based MBI with audio-based MBI and care-as-usual. The target sample includes 90 caregivers of community-dwelling persons with dementia. Each arm (n=30) will receive an eight-week exercise with instruction, with outcome assessment at baseline, post-treatment,

and 2-month follow-up. Qualitative interviews will also be conducted to assess the feasibility and acceptance. The VR-based MBI group will engage in mindfulness exercises using a mobile app and VR technology, incorporating different natural environments. The intervention duration is eight weeks. The primary outcome is the caregivers' psychological well-being regarding depression, anxiety, and stress. The secondary outcomes include caregiver burden, mindfulness level, quality of life and caregiver-recipient relationship.

Following intention-to-treat analysis, quantitative data on effectiveness will be analysed using between-group t-tests and group-by-time effect size (Cohen's d). The six-step thematic analysis will be utilized for qualitative data. The intervention group will accept the VR-based MBI, rate the intervention as feasible and show significant improvements in outcome measurements.