A Cognitive Vulnerability Model of Sleep and Mood in Adolescents under Naturalistically Restricted and Extended Sleep Opportunities
A Cognitive Vulnerability Model of Sleep and Mood in Adolescents under Naturalistically Restricted and Extended Sleep Opportunities
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DOI：
10.5665/sleep.4508
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发表时间：
2015-03-01
期刊：
影响因子：
5.6
通讯作者：
Trinder, John
中科院分区：
文献类型：
--
作者：
Bei, Bei;Wiley, Joshua F.;Trinder, John
研究目的：学期和假期代表了自然发生的限制和延长睡眠机会的时期。客观睡眠、主观睡眠和消极情绪之间关系的认知模型在这些时期进行了测试，睡眠特异性（即，关于睡眠的功能失调的信念和态度）和全局（即，设计：一个学期的最后一周（Time-E），接下来的两周假期（Time-V）和下一个学期的第一周（Time-S）的纵向研究。设置：一般社区。参与者：146名青少年，47.3%男性，平均年龄= 16.2岁（标准偏差+/-1年）。干预措施：N/A。测量和结果：通过活动记录仪连续测量客观睡眠。在Time-E评估了社会人口统计学和认知脆弱性;在每个时间点测量了主观睡眠、消极情绪（焦虑和抑郁症状）和学习压力。在控制学习压力和性别的情况下，主观睡眠质量在各时间点均介导了客观睡眠与负性情绪的关系。在延长（时间-V），但不限制（时间-E和时间-S）的睡眠机会，这种调解是由全球认知脆弱性，间接影响更强的脆弱性。此外，在时间E和时间V，而不是时间S，更大的睡眠特异性和整体认知脆弱性分别与较差的主观睡眠质量和情绪相关。结果强调了主观睡眠感知在睡眠相关情绪问题发展中的重要性，并支持认知脆弱性作为客观睡眠，主观睡眠，消极的情绪。具有较高认知脆弱性的青少年更容易受到睡眠不佳和睡眠相关情绪问题的影响。这些发现对干预措施具有实际意义。
Study Objectives: School terms and vacations represent naturally occurring periods of restricted and extended sleep opportunities. A cognitive model of the relationships among objective sleep, subjective sleep, and negative mood was tested across these periods, with sleep-specific (i.e., dysfunctional beliefs and attitudes about sleep) and global (i.e., dysfunctional attitudes) cognitive vulnerabilities as moderators.Design: Longitudinal study over the last week of a school term (Time-E), the following 2-w vacation (Time-V), and the first week of the next term (Time-S).Setting: General community.Participants: 146 adolescents, 47.3% male, mean age = 16.2 years (standard deviation +/- 1 year).Interventions: N/A.Measurements and Results: Objective sleep was measured continuously by actigraphy. Sociodemographics and cognitive vulnerabilities were assessed at Time-E; subjective sleep, negative mood (anxiety and depressive symptoms), and academic stress were measured at each time point. Controlling for academic stress and sex, subjective sleep quality mediated the relationship between objective sleep and negative mood at all time points. During extended (Time-V), but not restricted (Time-E and Time-S) sleep opportunity, this mediation was moderated by global cognitive vulnerability, with the indirect effects stronger with higher vulnerability. Further, at Time-E and Time-V, but not Time-S, greater sleep-specific and global cognitive vulnerabilities were associated with poorer subjective sleep quality and mood, respectively.Conclusions: Results highlighted the importance of subjective sleep perception in the development of sleep related mood problems, and supported the role of cognitive vulnerabilities as potential mechanisms in the relationships between objective sleep, subjective sleep, and negative mood. Adolescents with higher cognitive vulnerability are more susceptible to perceived poor sleep and sleep related mood problems. These findings have practical implications for interventions.