0177 Sleep and Resilient Coping: A Twin Study. (27th April 2018)

• Record Type: Journal Article
• Authors: McCall, C A; Turkheimer, E; Tsang, S; Avery, A; Duncan, G E; Watson, N F
• Is Part Of: Sleep. Volume 41(2018)Supplement 1
• Page Start: A69
• Page End: A70
• Publication Date: 2018-04-27
• Subjects: Sleep -- Physiological aspects -- Periodicals; Sleep disorders -- Periodicals; Sommeil -- Aspect physiologique -- Périodiques; Sommeil, Troubles du -- Périodiques; Sleep disorders; Sleep -- Physiological aspects; Sleep -- physiological aspects; Sleep Wake Disorders; Psychophysiology; Electronic journals; Periodicals; 616.8498
• DOI: 10.1093/sleep/zsy061.176
• Languages: English
• ISSNs: 0161-8105

Abstract

Abstract: Introduction: Stress and trauma increase vulnerability to depression and post-traumatic stress disorder (PTSD). While some individuals develop adverse outcomes after trauma, others recover from, or even thrive after extreme adversity. Sleep influences the development of adverse outcomes after trauma. Sleep problems are highly correlated with PTSD symptoms after trauma, and restoration of sleep may promote resilience. The goal of our study is to investigate the relationship between sleep duration and resilient coping in twins who have experienced trauma. Methods: Participants included 5888 pairs of same-sex twins from the Washington State Twin Registry (4014 monozygotic and 1874 dizygotic pairs), of whom 2023 pairs (34.36%) were male, with ages ranging from 18–87 years (mean 41.67, SD 17.79). Data were obtained from the Twin Registry Enrollment Survey. Sleep duration was reported in hours and minutes, and resilient coping scores were obtained from the Brief Resilient Coping Scale (BRCS), a validated four-question scale, with possible scores ranging from 4–20, measuring adaptability and creative responses to stress. Trauma history was reported as past exposure to combat, fire/explosion, physical assault, or other. Results: The mean sleep duration for all participants was 7.33 hours (SD 1.16), with overall mean BRCS score of 14.35 (SD 3.27). Sleep duration was categorized as short (<7 hours), average (7–8.99 hours), or long (>=9 hours). In men with trauma history, there was a positive correlation between sleep duration and coping score for short sleep duration for monozygotic males (n=293, r=0.16, p=0.005) and dizygotic males (n=120, r=0.12, p=0.19), and a negative correlation for long sleep duration for monozygotic males (n=62, r=-0.37, p=0.003) and dizygotic males (n=33, r=-0.20, p=0.26). This relationship was not observed in female twins. Conclusion: Short and long sleep durations correlated with reduced resilient coping in men exposed to traumatic events, suggesting an inverted U-shaped correlation between sleep duration and resilient coping. The correlation was higher for monozygotic twins than for dizygotic twins. Future analyses will examine the heritability and gene-environment interaction of resilient coping and sleep duration in trauma-exposed twins. Support (If Any): N/A.