Caring Relationships Expression Study (CARES)

This pilot study aims to examine feasibility of implementing a HRVB intervention and an MLC control with AD FCGs. The HRVB and MLC interventions will be evaluated for acceptability (operationalized as adherence to intervention) and satisfaction and to identify necessary intervention modifications. Feasibility benchmarks: 85% of participants will be at least 70% adherent to implementation goals (10-min use 5-7 days per week). Feasibility of randomization will be examined by comparing adherence/retention (expecting similar patterns across interventions). Acceptability/satisfaction with HRVB and MLC will be evaluated in semi-structured interviews post-intervention including detailed probing on feature preferences, barriers/facilitators, suggested improvements for retention.

The second aim of this study is to examine patterns of association of HRVB and MLC with outcomes. The investigators will examine pre- to post-intervention changes (and sustained outcomes at follow-up) in self-reported caregiver burden, stress and resilience. Change in relationship quality will additionally be assessed from pre- to post intervention. Change in ANS balance, a neurophysiological indicator of reduced emotional distress and improved resilience, will be assessed using HRV data at all four timepoints to examine trends and change over time. Significance tests will not be conducted, in alignment with goals for pilot feasibility studies. The investigators will observe the direction of change and outcomes to examine the value of MLC as an appropriate control condition showing minimal placebo effects compared to HRVB.