사회불안장애의 회피 증상과 심박변이도 반응성

• Published in: Anxiety and mood Vol. 20; no. 2; pp. 35 - 40
• Main Authors: 김시우, 이다솜, 김재현, 곽수진, 강등현, 최수희, 김소연, Si Woo Kim, Dasom Lee, Jae Hyun Kim, Su Jin Kwak, Deung Hyun Kang, Soo-Hee, Choi, So-Yeon Kim
• Format: Journal Article
• Language: Korean
• Published: 대한불안의학회 01.10.2024
• Subjects: 정신과학
• ISSN: 2586-0151; 2586-0046
• DOI: 10.24986/anxmod.2024.20.2.001

Objective : Reduced resting heart rate variability (HRV) is well-documented in anxiety and mood disorders; however, limited research exists on HRV reactivity during emotional processing. This study examined HRV reactivity to angry faces in social anxiety disorder (SAD) patients and its association with symptom severity. Methods : Twenty-six SAD patients and 35 controls participated. HRV was measured using the root mean square of successive differences (RMSSD). RMSSD reactivity was calculated by subtracting RMSSD during angry and neutral face processing from baseline RMSSD. Group differences in RMSSD reactivity and its relationship with social anxiety symptoms were analyzed. Results : SAD patients exhibited lower RMSSD reactivity compared to controls during both angry (t54.829=3.03, p=0.004) and neutral face processing (t52.877=2.18, p=0.034). In the SAD group, RMSSD reactivity during angry face processing significantly explained variance in performance avoidance subscale scores of the Liebowitz Social Anxiety Scale (R2=0.208, β=-0.456, F1,23=6.054, p=0.022). Conclusion : Reduced HRV reactivity in SAD may reflect impaired autonomic flexibility and difficulty responding to emotionally relevant stressors. Lower HRV reactivity is associated with greater symptom severity, specifically performance-related avoidance, highlighting HRV's potential as a physiological marker for identifying specific symptoms in SAD.