Alexithymic traits, independent of depression and anxiety, are associated with reduced sleep quality
Alexithymic traits, independent of depression and anxiety, are associated with reduced sleep quality
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DOI：
10.1016/j.paid.2018.03.023
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发表时间：
2018-07-15
影响因子：
4.3
通讯作者：
Bird, Geoffrey
中科院分区：
文献类型：
--
作者：
Murphy, Jennifer;Wulff, Katharina;Bird, Geoffrey
睡眠中断是许多精神疾病的一个跨诊断因素。虽然这是公认的，但各种条件下睡眠不佳的原因尚不清楚。一种可能性是，睡眠不好是由多种条件共同发生的特征驱动的。先前的研究表明，述情障碍（无法识别和描述自己的情绪）是一个候选特征，因为它与睡眠质量差有关，并且在多个诊断组中可以看到述情障碍水平升高。然而，述情障碍和睡眠质量差之间的联系受到质疑，研究认为，影响睡眠质量的是抑郁和焦虑，而不是述情障碍。问题是，这些研究通常使用抑郁和焦虑的测量，其中包括与睡眠有关的项目-这意味着抑郁和焦虑之间的明显关联可能是由于测量问题，而不是抑郁和焦虑本身。研究1证实了述情障碍和主观睡眠质量之间的关系，而研究2利用一个独立的样本来复制述情障碍和睡眠质量之间的关联，并证明它不是一个产品的共发抑郁症或焦虑。因此，结果支持的建议，述情障碍可以解释在多种精神疾病的睡眠中断。
Disrupted sleep is a transdiagnostic factor characterising a multitude of psychiatric conditions. Although this is well-recognised, the cause of poor sleep across conditions is unclear. One possibility is that poor sleep is driven by traits which also co-occur with multiple conditions. Previous research suggests that alexithymia (an inability to identify and describe one's emotions) is a candidate trait, as it is linked to poor sleep quality and elevated levels of alexithymia are seen across multiple diagnostic groups. The association between alexithymia and poor sleep quality has been questioned however, with studies arguing that it is depression and anxiety, rather than alexithymia, which impact sleep quality. Problematically, such studies typically utilise measures of depression and anxiety which include items relating to sleep- meaning that apparent associations between depression and anxiety may be due to measurement issues, rather than to depression and anxiety per se. Study 1 confirmed the relationship between alexithymia and subjective sleep quality, whilst Study 2 utilised an independent sample to replicate the association between alexithymia and sleep quality, and to demonstrate that it is not a product of cooccurring depression or anxiety. Results therefore support the suggestion that alexithymia may explain disrupted sleep across multiple psychiatric conditions.