MentalGym™ and NeuroBrave™ Guided Wearable-Assisted Physiology Regulation Training for PTSD (PRTP)

This randomized controlled trial (RCT) will evaluate the effectiveness of a digitalbiofeedback‐based intervention ("Mental Gym®") designed to reduce Posttraumatic StressDisorder (PTSD) symptoms and improve mental health. The intervention combines daily HRVbiofeedback exercises using a wearable device (Garmin watch), a dedicated mobileapplication, and weekly group guidance sessions. A delayed‐intervention control groupdesign will be used. To account for expected attrition and ensure a final sample of 60participants, approximately 80 subjects will be recruited. Physiological and self‐reportdata will be collected pre‐ and post‐intervention, weekly during the intervention, and atfollow‐ups (3 months post‐intervention). The study population consists of combat veteransdiagnosed with PTSD.