Mindfulness skills and experiential avoidance as therapeutic mechanisms for treatment-resistant depression through mindfulness-based cognitive therapy and lifestyle modification.

Background/objective: The COVID-19 pandemic and consequent physical distancing has made it difficult to provide care for those with Treatment-Resistant Depression (TRD). As a secondary analysis of a clinical trial, the aim of this study was to explore potential mechanisms through which three online-delivered approaches, added to treatment as usual, improve depressive symptoms in TRD patients. Methods: The three approaches included (a) Minimal Lifestyle Intervention (MLI), (b) Mindfulness-Based Cognitive Therapy (MBCT), and (c) Lifestyle Modification Program (LMP). Sixty-six participants with TRD completed assessments pre-post intervention (mindfulness skills [FFMQ]; self-compassion [SCS]; and experiential avoidance [AAQ-II]) and pre-intervention to follow-up (depressive symptoms [BDI-II]). Data were analyzed using within-subjects regression models to test mediation. Results: Mindfulness skills mediated the effect of MBCT on depressive symptoms (ab = -4.69, 95% CI = -12.93 to-0.32), whereas the lack of experiential avoidance mediated the effect of LMP on depressive symptoms (ab = -3.22, 95% CI = -7.03 to-0.14). Conclusion: Strengthening mindfulness skills and decreasing experiential avoidance may promote recovery in patients with TRD, MBCT, and LMP have demonstrated that they may help increase mindfulness skills and decrease experiential avoidance, respectively. Future work will need to unpick the components of these interventions to help isolate active ingredients and increase optimization.

Effectiveness of a healthy lifestyle promotion program as adjunctive teletherapy for treatment-resistant major depression during COVID 19 pandemic: A randomized clinical trial protocol.

INTRODUCTION: Treatment-resistant depression (TRD) has a high prevalence and can be exacerbated by poor physical health and economic hardships, which have become common stressors during the current COVID-19 pandemic. The therapeutic approaches used to treat these patients are not always available, may be not be accepted by some patients, and often require face-to-face interactions. OBJECTIVE: The main aim of this study will be to evaluate the effectiveness of an Internet-based adjuvant lifestyle-based intervention for patients with TRD. METHODS: This will be a parallel, randomized, and controlled clinical trial. A total of 180 patients with TRD will be randomly allocated (1:1:1) to 1 of 3 groups: treatment prescribed by the mental health team and written suggestions for lifestyle changes (placebo control group); treatment prescribed by the mental health team, written suggestions for lifestyle changes, and an 8-week mindfulness-based cognitive therapy program (active control group); or treatment prescribed by the mental health team, written suggestions for lifestyle changes, and an 8-week lifestyle change promotion program (intervention group). We will perform this study during the COVID-19 pandemic, and will administer interventions by teletherapy, and contact participants by telephone calls, text messages, and/or teleconferences. We will collect patient data using questionnaires administered at baseline, immediately after the intervention, and after 6 and 12 months. The primary outcome will be score on the Beck Depression Inventory-II. The secondary outcomes will be score on the Clinical Global Impressions Scale (used to quantify and track patient progress and treatment response over time) and health-related quality of life measured using the European Quality of Life-5 Dimensions Questionnaire. DISCUSSION: Patients with TRD are especially vulnerable when face-to-face psychotherapy is unavailable. The main strength of the proposed study is the novelty of the intervention to be used as an adjuvant therapy. Our results may provide guidance for treatment of patients with TRD in future situations that require lockdown measures. CLINICALTRIALS REGISTRATION NUMBER: NCT04428099.

Effectiveness and adherence of telephone-administered psychotherapy for depression: A systematic review and meta-analysis.

BACKGROUND: The aim of this systematic review was to evaluate the effectiveness of telephone-administered psychotherapy for depression in adults when compared to control conditions or other active treatments, and to determine adherence to telephone-administered psychotherapy. METHODS: A bibliographic search was conducted in MEDLINE, Embase, PsycINFO, the Cochrane library, and a number of sources of grey literature. We included randomised controlled trials (RCTs) examining the impact of telephone-administered psychotherapy on depressive symptomatology. Two reviewers independently screened citations, extracted the relevant data, and assessed risk of bias using Cochrane tools. Random effects meta-analyses were used to determine the average effect of the interventions on depressive symptomatology: main analysis including randomised trials only, and several exploratory subgroup and sensitivity analyses. RESULTS: We identified ten trials. Telephone-administered psychotherapy showed beneficial effects on depression severity when compared to control conditions ((standardized mean difference [SMD]= -0.85 (95% CI -1.56 to -0.15)). When compared to active comparators, the meta-analysis showed a non-significant small effect size (SMD= -0.18 (95% CI -0.45 to 0.09)), in favour of telephone-administered psychotherapy. Total weighted mean adherence was 73%. LIMITATIONS: Some of the included studies presented a small sample size. Due to variations in time points follow-ups among the studies, it was not possible to determine long term post intervention effects. CONCLUSIONS: Available evidence suggests that telephone-delivered psychotherapy may be an effective strategy to reduce depression symptoms when compared to control conditions, and shows an adequate treatment adherence. Future research is needed to determine its cost-effectiveness and long-term effects.