Walk and Talk: A Randomized Controlled Trial of Multi-Modal Motion-Assisted Memory Desensitization and Reconsolidation Therapy versus Treatment as Usual for Veterans and First Responders with Posttraumatic Stress Disorder

Abstract – Introduction: Posttraumatic stress disorder (PTSD) presents a significant challenge within the treatment of mental health issues, particularly in veterans and first responders who often experience resistance to standard treatments. This study evaluated the effectiveness of a virtual reality exposure-based treatment with motion as compared to treatment as usual (TAU), as first-line treatment for PTSD within these populations. Methods: This multicenter, parallel, single-blind, non-inferiority randomized controlled trial was conducted in three centers across the Netherlands. We included adults diagnosed with occupational or combat-related PTSD, without prior treatment history. Participants were randomized (1:1) to receive either manualized multi-modal motion-assisted memory desensitization and reconsolidation (3MDR) therapy or manualized regular trauma-focused psychotherapy (TAU). 3MDR was applied in fewer sessions than TAU. Primary outcome was self-reported PTSD severity, based on the PTSD Checklist for DSM-5, assessed at baseline, post-treatment, 3 and 6 months post-treatment. Secondary outcomes were clinician-rated PTSD, avoidance, comorbid disorders and symptoms, and functioning. The trial was prospectively registered in the Dutch Trial Register, NL-OMON55588. Results: Between February 15, 2018, and July 22, 2022, 134 participants with PTSD were enrolled, with 67 (50%) randomized to 3MDR and 67 (50%) to TAU of whom 106 (79%) were veterans, and 28 (21%) were first responders. Significant time effects were demonstrated in self-reported and clinician-rated PTSD severity for both groups, as well as in avoidance, comorbid disorders, and functioning. At 6 months post-treatment, 3MDR proved to be non-inferior to TAU in terms of self-reported PTSD (mean difference = −2.91 [95% CI −7.92, 2.10], p = 0.25). Conclusion: 3MDR demonstrates to be an effective alternative first-line treatment for PTSD stemming from occupational traumatic events. Even though it leans on infrastructure with a treadmill and other hardware components, it may offer an alternative over conventional trauma-focused psychotherapies for PTSD that yields savings of a quarter of time spent within therapy.