中華心理衛生協會

Purpose: Research about repetitive thought and mental disorders has been extended form depressive and anxiety disorders to insomnia, and many studies have focused on the relationship between rumination, worry, and sleep quality. The purpose of this study is to investigate the relationships among rumination, worry, pre-sleep arousal, and sleep quality. We used subjective and objective measurements to examine the relationship between presleep arousal and both subjective and objective sleep quality. Methods: The Study began from September 2011 until April 2012 and there were two stages. Stage 1 included 193 participants (65 men and 125 women, mean age = 20.78). All participants completed the Ruminative response style questionnaire (RSQ) and the Penn state worry questionnaire (PSWQ). To rule out moderate to severe depression or anxiety, all participants completed the Beck depression inventory-second edition (BDI-II) and the Beck anxiety inventory (BAI). Stage 2 included 30 participants without depression or anxiety randomly selected form Stage 1. Participants completed 7 consecutive days of Actiwatch^® records and we recorded one night of polysomnography data. Results: Factor analysis of Stage 1 data supported 3 factors: dwelling on the negative, worry engagement, and active cognitive appraisal. Stage 2 analysis showed that worry engagement significantly correlated with increased sleep latency as measured by Actiwatch^®. Pre-sleep cognitive arousal correlated with increased sleep latency. Pre-sleep somatic arousal correlated with increased sleep latency and decreased sleep efficiency. Conclusions: We conclude that the psychophysiological effect of rumination and worry would entail increased pre-sleep arousal, which would impact sleep quality.