Publications [#348072] of Kyle Bourassa

Journal Articles

1. Bourassa, KJ; Stevens, ES; Katz, AC; Rothbaum, BO; Reger, GM; Norr, AM (2020). The Impact of Exposure Therapy on Resting Heart Rate and Heart Rate Reactivity Among Active-Duty Soldiers With Posttraumatic Stress Disorder.. Psychosomatic Medicine, 82(1), 108-114.
   (last updated on 2024/01/01)

   Abstract:
   

   Objective

   Posttraumatic stress disorder (PTSD) is linked to poor health, including cardiovascular disease. These effects may be a result of increased tonic cardiovascular function and cardiovascular reactivity. Despite PTSD's negative health burden, relatively little is known about whether frontline treatments for PTSD may alleviate cardiovascular risk.

   Methods

   The current study was a secondary analysis of a larger intervention study of active-duty soldiers with PTSD (n = 104; mean [SD] age = 30.6 [6.7] years; 6% women) randomized to an exposure therapy-either prolonged exposure (PE) or virtual reality exposure (VRE)-or a waitlist control condition. We examined change in participants' resting heart rate (HR) and HR reactivity from baseline (before randomization) to midtreatment and posttreatment using residualized change regression models.

   Results

   The results of the study demonstrated decreased resting HR (B = -5.06, p = .024) and HR reactivity (B = -2.46, p = .005) from baseline to posttreatment of PE and VRE relative to waitlist. Exploratory analyses found that changes in resting HR and HR reactivity were not significantly correlated with either self-reported or clinician-rated PTSD symptom change.

   Conclusions

   These results suggest that PE and VRE for PTSD may alleviate some cardiovascular health risk associated with PTSD, improving cardiovascular functioning.RCT Registration: ClinicalTrials.gov (identifier: NCT01193725).