Radboud University, Behavioural Science Institute, Nijmegen, The Netherlands.
Stress Research Institute, Stockholm University, Stockholm, Sweden.
J Psychosom Res. 2015 Nov;79(5):391-8. doi: 10.1016/j.jpsychores.2015.08.011. Epub 2015 Sep 2.
In this longitudinal two-wave study, bidirectional relations between work-related stress and sleep quality were examined. Moreover, it was investigated whether perseverative cognition is a potential underlying mechanism in this association, related to both work-related stress and sleep quality.
A randomly selected sample of Dutch employees received an online survey in 2012 and 2013. Of all invited employees, 877 participated in both waves. Structural equation modeling was performed to analyze the data.
We found evidence for reversed relations between work-related stress and sleep quality. Specifically, when controlling for perseverative cognition, work-related stress was not directly related to subsequent sleep quality, but low sleep quality was associated with an increase in work-related stress over time. Moreover, negative bidirectional associations over time were found between perseverative cognition and sleep quality, and positive bidirectional associations were found between work-related stress and perseverative cognition. Lastly, a mediation analysis showed that perseverative cognition fully mediated the relationship between work-related stress and sleep quality.
The study findings suggest that perseverative cognition could be an important underlying mechanism in the association between work-related stress and sleep quality. The bidirectionality of the studied relationships could be an indication of a vicious cycle, in which work-related stress, perseverative cognition, and sleep quality mutually influence each other over time.
本纵向双波研究旨在考察工作相关压力与睡眠质量之间的双向关系。此外，还研究了坚持认知是否是这种关联的潜在潜在机制，与工作相关的压力和睡眠质量都有关。
一项针对荷兰员工的随机抽样调查于 2012 年和 2013 年进行了在线调查。在所有受邀员工中，有 877 人参加了两次调查。采用结构方程模型对数据进行分析。
我们发现工作相关压力与睡眠质量之间存在反向关系的证据。具体而言，当控制坚持认知时，工作相关压力与随后的睡眠质量没有直接关系，但睡眠质量差与工作相关压力随时间的增加有关。此外，坚持认知与睡眠质量之间存在负向的双向关联，工作相关压力与坚持认知之间存在正向的双向关联。最后，中介分析表明，坚持认知完全中介了工作相关压力与睡眠质量之间的关系。
研究结果表明，坚持认知可能是工作相关压力与睡眠质量之间关联的一个重要潜在机制。研究中所涉及的关系的双向性可能表明一种恶性循环，其中工作相关压力、坚持认知和睡眠质量相互影响。
