Heart Rate Variability: Pre-deployment Predictor of Post-deployment PTSD Symptoms
Heart rate variability is a physiological measure associated with autonomic nervous system activity. This study hypothesized that lower pre-deployment HRV would be associated with higher post-deployment post-traumatic stress disorder (PTSD) symptoms. Three-hundred-forty-three Army National Guard soldiers enrolled in the Warriors Achieving Resilience (WAR) study were analyzed. The primary outcome was PTSD symptom severity using the PTSD Checklist - Military version (PCL) measured at baseline, 3- and 12-month post-deployment. Heart rate variability predictor variables included: high frequency power (HF) and standard deviation of the normal cardiac inter-beat interval (SDNN). Generalized linear mixed models revealed that the pre-deployment PCL*ln(HF) interaction term was significant (p
Gibson, D. P.,
(2016). Heart Rate Variability: Pre-deployment Predictor of Post-deployment PTSD Symptoms. Biological Psychology, 121(Pt A), 91-98.
Available at: https://nsuworks.nova.edu/cps_facarticles/1703