Background Psychosocial interventions for bipolar disorder are frequently unavailable and resource intensive. Mobile technology may improve access to evidence-based interventions and may increase their efficacy. We evaluated the feasibility, acceptability and efficacy of an augmentative mobile ecological momentary intervention targeting self-management of mood symptoms. Methods This was a randomized single-blind controlled trial with 82 consumers diagnosed with bipolar disorder who completed a four-session psychoeducational intervention and were assigned to 10 weeks of either: 1) mobile device delivered interactive intervention linking patient-reported mood states with personalized self-management strategies, or 2) paper-and-pencil mood monitoring. Participants were assessed at baseline, 6 weeks (mid-point), 12 weeks (post-treatment), and 24 weeks (follow up) with clinician-rated depression and mania scales and self-reported functioning. Results Retention at 12 weeks was 93% and both conditions were associated with high satisfaction. Compared to the paper-and-pencil condition, participants in the augmented mobile intervention condition showed significantly greater reductions in depressive symptoms at 6 and 12 weeks (Cohen's d for both were d=0.48). However, these effects were not maintained at 24-week follow up. Conditions did not differ significantly in the impact on manic symptoms or functional impairment. Limitations This was not a definitive trial and was not powered to detect moderators and mediators. Conclusions Automated mobile-phone intervention is feasible, acceptable, and may enhance the impact of brief psychoeducation on depressive symptoms in bipolar disorder. However, sustainment of gains from symptom self-management mobile interventions, once stopped, may be limited.
Objective A combination of high engagement in pleasurable activities and low perceived activity restriction is potentially protective for a number of health and quality of life outcomes. This study tests the newly proposed Pleasant Events and Activity Restriction (PEAR) model to explain level of blood pressure (BP) in a sample of elderly dementia caregivers. Methods This cross-sectional study included 66 caregivers, ≥ 55 years of age, providing in-home care to a relative with dementia. Planned comparisons were made to assess group differences in BP between caregivers reporting high engagement in pleasant events plus low perceived activity restriction (HPLR; N = 22) to those with low pleasure plus high restriction (LPHR; N = 23) or those with either high pleasure plus high restriction or low pleasure plus low restriction (HPHR/LPLR; N = 21). Results After adjustments for age, sex, body mass index, use of anti-hypertensive medication, physical activity, and number of health problems, HPLR participants (86.78 mm Hg) had significantly lower mean arterial pressure compared to LPHR participants (94.70 mm Hg) (p = .01, Cohen’s d=0.89) and HPHR/LPLR participants (94.84 mm Hg) (p = .023, d=0.91). Similar results were found in post-hoc comparisons of both systolic and diastolic BP. Conclusions This study extends support for the PEAR model to physical health outcomes. Differences in BP between the HPLR group and other groups were of large magnitude and thus clinically meaningful. The findings may inform intervention studies aimed at investigating whether increasing pleasant events and lowering perceived activity restriction may lower BP.
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