Fig. 4From: Diaphragmatic breathing during virtual reality exposure therapy for aviophobia: functional coping strategy or avoidance behavior? a pilot studyHeart rate (HR) during the exposure (4a) and test session (4b). Note. VRET = Virtual reality exposure therapy, DB = diaphragmatic breathing, c1/c2 = calm, t1/t2 = turbulence. Graphs represent the mean of the heart rate during the exposures (1–3) and the test sessions (1–2) for both groups. Standard errors are represented as error barsBack to article page