Heart rate variability (HRV) and posttraumatic stress disorder (PTSD): a pilot study

Area of Science:

• Psychology
• Neuroscience
• Autonomic Nervous System Research

Background:

• Combat exposure increases Post Traumatic Stress Disorder (PTSD) risk.
• Established PTSD treatments like prolonged exposure and cognitive processing therapy are not universally effective.
• Heart rate variability (HRV) reflects autonomic nervous system function and stress adaptation.

Purpose of the Study:

• To compare baseline HRV in veterans with and without PTSD.
• To assess the feasibility, acceptability, and efficacy of HRV biofeedback for PTSD treatment.
• To determine if veterans with PTSD exhibit depressed HRV compared to controls.

Main Methods:

• A pilot study involving veterans with and without PTSD, measured by the Clinician-Administered PTSD Scale and PTSD Checklist.
• Baseline HRV measurements were taken for all participants.
• Veterans with PTSD were randomized to receive either HRV biofeedback plus treatment as usual (TAU) or TAU alone.

Main Results:

• Veterans with combat-related PTSD showed significantly depressed HRV compared to those without PTSD.
• HRV biofeedback was found to be feasible, acceptable, and potentially effective for veterans with PTSD.
• HRV biofeedback significantly increased HRV and reduced PTSD symptoms, while TAU alone had no significant effect.

Conclusions:

• Veterans with PTSD exhibit lower HRV, indicating autonomic nervous system dysregulation.
• HRV biofeedback presents a promising, feasible, and acceptable treatment modality for PTSD in veterans.
• Further validation through larger randomized controlled trials is recommended.