Yoga as an Intervention for PTSD: a Theoretical Rationale and Review of the Literature

Mental health during the COVID-19 pandemic and beyond: The importance of the vagus nerve for biopsychosocial resilience

The COVID-19 pandemic has led to widespread increases in mental health problems, including anxiety and depression. The development of these and other psychiatric disorders may be related to changes in immune, endocrine, autonomic, cognitive, and affective processes induced by a SARS-CoV-2 infection. Interestingly, many of these same changes can be triggered by psychosocial stressors such as social isolation and rejection, which have become increasingly common due to public policies aimed at reducing the spread of SARS-CoV-2. The present review aims to shed light on these issues by describing how viral infections and stress affect mental health. First, we describe the multi-level mechanisms linking viral infection and life stress exposure with risk for psychopathology. Then, we summarize how resilience can be enhanced by targeting vagus nerve function by, for example, applying transcutaneous vagus nerve stimulation and targeting lifestyle factors, such as exercise. With these biopsychosocial insights in mind, researchers and healthcare professionals will be better equipped to reduce risk for psychopathology and increase resilience during this challenging pandemic period and beyond.

The experience of Trauma Center-Trauma Sensitive Yoga training on professional practice of mental health professionals and yoga instructors

BACKGROUND AND PURPOSE

Traumatic psychological events are thought to alter brain physiology, notably regions such as the thalamus and the limbic system, affecting personal choice, autonomy, and behavior. Innovative therapies are needed to address the diverse, mental and physical consequences of these changes. Trauma Center-Trauma Sensitive Yoga (TC-TSY) has shown promising results in clinical trials among individuals experiencing posttraumatic symptomatology.

MATERIALS AND METHODS

Using a qualitative, descriptive design, we examined the impact of TC-TSY training on the professional practice of seven practitioners who were certified yoga instructors and/or registered psychologists.

RESULTS

The findings suggest TC-TSY training enriched their practices, chiefly through its choice-based, widely applicable approach; invitation- and mindfulness-based language; and building of therapeutic trust and attunement. Some participants questioned the accessibility and suitability of the training, as well as the rigidity of TC-TSY terminology.

CONCLUSION

More research is needed to examine potential outcomes of TC-TSY practice related to self-efficacy, coping, quality of life, and stress reduction among traumatized individuals.

A randomized controlled trial of yoga vs nonaerobic exercise for veterans with PTSD: Understanding efficacy, mechanisms of change, and mode of delivery

BACKGROUND AND OBJECTIVES

Posttraumatic stress disorder (PTSD) is a chronic, disabling, and prevalent mental health disorder among Veterans. Despite the availability of empirically supported psychotherapies, many Veterans remain symptomatic after treatment and/or prefer to seek complementary and integrative health approaches, including yoga, to manage PTSD. The randomized controlled trial (RCT) described herein will evaluate the efficacy of a manualized yoga program as compared to nonaerobic exercise in reducing PTSD severity among Veterans. A secondary aim of this study is to better understand the mechanisms of change.

METHODS

Veterans (N = 192) with PTSD will be randomized to hatha yoga or nonaerobic physical activity control; both groups consist of 12 weekly, 60-min group or online training sessions with 15-20 min of daily at-home practice. Outcome measures will be administered at baseline, mid-treatment, posttreatment, and 12-week follow-up.

PROJECTED OUTCOMES

This study will evaluate changes in PTSD severity (primary outcome) as well as depression, anxiety, anger, sleep problems, and psychosocial disability (secondary outcomes). We will also use multiple mediation to examine two potential models of the mechanisms of clinical effect: the Attention Model (i.e., yoga increases attentional control, which reduces PTSD symptoms), the Coping Model (i.e., yoga increases distress tolerance, which improves coping, which reduces PTSD symptoms), and the combination of these models. This aspect of the study is innovative and important given the absence of an existing, comprehensive model for understanding yoga's impact on PTSD. Ultimately, we hope to develop guidelines for application of yoga to PTSD recovery.

Targeting hyperarousal: Mantram Repetition Program for PTSD in US veterans

Background: Hyperarousal appears to play an important role in the development and maintenance of posttraumatic stress disorder (PTSD) symptoms, but current evidence-based treatments appear to address this symptom type less effectively than the other symptom clusters. The Mantram Repetition Program (MRP) is a meditation-based intervention that has previously been shown to improve symptoms of posttraumatic stress disorder (PTSD) and may be especially helpful for hyperarousal. If MRP is an effective tool for decreasing this often treatment-resistant symptom cluster, it may become an important clinical tool. Objective: The goal of this secondary analysis was to examine the effect of the MRP on hyperarousal and other PTSD symptom clusters and to examine hyperarousal as a mediator of treatment response. Method: Secondary analyses were conducted on data from a randomized controlled trial in which Veterans with PTSD (n = 173) were assigned to the MRP or a non-specific psychotherapy control and assessed pre-treatment, post-treatment and 8 weeks after treatment completion. The impact of the interventions on PTSD symptom clusters was examined, and time-lagged hierarchical linear modelling was applied to examine alternative mediation models. Results: All PTSD symptom clusters improved in both treatments. MRP led to greater reductions in hyperarousal at post-treatment (Hedge's g = 0.57) and follow-up (Hedge's g = 0.52), and in numbing at post-treatment (Hedge's g = 0.47). Hyperarousal mediated reductions in the composite of the other PTSD symptom clusters. Although the reverse model was significant as well, the effect was weaker in this direction. Conclusion: Interventions focused on the management of hyperarousal may play an important role in recovery from PTSD. The MRP appears efficacious in reducing hyperarousal, and thereby impacting other PTSD symptom clusters, as one pathway to facilitating recovery.

Mindfulness in PTSD treatment

In recent years, the field has witnessed considerable enthusiasm for the ancient practice of mindfulness. The skills derived from this experience, including focused attention, nonjudgmental acceptance of internal experiences and reduced autonomic reactivity, may be helpful in counteracting pathological responses to trauma. Several types of interventions that incorporate principles of mindfulness have been examined for treatment of posttraumatic stress disorder (PTSD). This nascent literature is inconsistent and methodologically limited but does suggest that mindfulness is a potentially important tool for creating psychological change. The interventions described herein generally would not yet be considered first-line treatments for PTSD. Nonetheless, evidence is building, and mindfulness may provide an impetus for better understanding how to personalize psychological interventions and to evaluate their outcomes.