Article Summary
Clinical Summary: Yoga as an Adjunctive Treatment for Posttraumatic Stress Disorder: A Randomized Controlled Trial
Many patients with chronic PTSD remain symptomatic despite standard psychotherapy and medication, especially when affect dysregulation and dissociation interfere with trauma-focused work. This trial asks a practical question for refractory PTSD care: can a brief, trauma-informed yoga program add meaningful symptom relief where prior treatment has not?
Design
Sixty-four women with chronic, treatment-resistant PTSD were randomly assigned to either trauma-informed yoga or supportive women's health education, each as a weekly 1-hour class for 10 weeks.
N
64 (63%) were randomly assigned to treatment and formed the intention-to-treat (ITT) sample.
Population
women 18-58 years old with chronic, treatment nonresponsive PTSD
Duration
each as a weekly 1-hour class for 10 weeks
Key Findings
- At the final assessment, 16 of 31 participants (52%) in the yoga group no longer met criteria for PTSD compared to 6 of 29 (21%) in the control group (n = 60, χ21 = 6.17, P = .013).
- Both groups had significant CAPS decreases, but the reduction was larger in yoga, with a large effect size for the yoga group (d = 1.07) versus a medium to large effect size for the control group (d = 0.66), and the time ×— group interaction approached a medium effect size (d = −0.41).
- On the Davidson Trauma Scale, both groups improved from pretreatment to midtreatment, with the yoga group at b = −9.21; t = −2.34; P = .02; d = −0.37 and the control group at b = −22.12; t = −3.39; P = .001; d = −0.54, but a significant group ×— quadratic trend interaction (d = −0.34) showed different trajectories across treatment.
- Only the yoga group showed sustained PTSD symptom improvement on the Davidson Trauma Scale, with a significant medium effect size linear trend (d = −0.52), whereas the control group showed only a significant medium effect size quadratic trend (d = 0.46) and no significant linear trend (d = −0.29).
- Depression scores improved in both groups without a significant between-group difference: the yoga group had a medium effect size decrease on the BDI (d = −0.60) and the control group had a small-medium effect size decrease (d = −0.39).
Clinical Bottom Line
A 10-week, trauma-informed yoga program produced clinically meaningful PTSD improvement in women with chronic, treatment-resistant PTSD and outperformed supportive women's health education on loss of PTSD diagnosis and sustained symptom reduction. For patients who remain stuck despite conventional care, yoga is a credible adjunct rather than a wellness add-on.
Practice Implications
- Consider trauma-informed yoga as an adjunct for women with chronic, treatment-resistant PTSD who have had at least 3 years of prior therapy treatment that focused on the treatment of PTSD.
- Set expectations that symptom change may emerge early in multiple supportive interventions, but sustained PTSD improvement in this trial was seen in yoga rather than in women's health education.
- Monitor PTSD outcomes separately from mood outcomes, since both groups showed BDI improvement (d = −0.60 and d = −0.39) even though only yoga showed superior PTSD outcomes.
- When referring, favor trauma-informed yoga that emphasizes breathing, postures, meditation, simple noninterpretive language, and patient choice around bodily control, because that was the protocol tested in this study.
