Ayres Joseph, Chen Yiyang, Forbush Kelsie T, Bottera Angeline R, Christensen Pacella Kara A
Jane Addams College of Social Work, University of Illinois at Chicago, Chicago, IL, USA.
Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA.
Appetite. 2025 Sep 1;213:108052. doi: 10.1016/j.appet.2025.108052. Epub 2025 May 8.
Although disordered eating and sleep problems often co-occur, there has been limited research on mechanisms underlying their association. Previous studies using ecological momentary assessment (EMA) to evaluate links between sleep quality and disordered eating behaviors (e.g., loss-of-control eating, restricting, purging, excessive exercise) have largely not found statistically significant temporal associations; however, studies with larger samples are warranted. We used EMA to evaluate sleep quality and next-day engagement in disordered eating behaviors. Participants were 137 women aged 18-25 (M = 20.22, SD = 1.78) with current disordered eating behaviors (DEBs). Participants completed seven days of EMA, in which they reported the past night's sleep quality and answered six surveys daily about engagement in DEBs. DEBs were aggregated at the day level and dichotomized as present or absent (n = 438 days). We conducted four multilevel logistic regressions, nesting days within subjects. We predicted loss-of-control eating, purging, restricting, and excessive exercise using past night's sleep quality and survey day as fixed effects with random intercepts by subjects. Results indicated that neither between- nor within-person sleep quality predicted engagement in any DEBs (all ps > .10). Findings replicated past studies that found no or few prospective associations between sleep quality and engagement in DEBs. It is possible that other sleep metrics (e.g., variability in sleep and wake timing) may predict DEBs or associations may vary by gender. Future studies should examine subjective and objective sleep indices across genders to better understand potential links between sleep and DEBs.
尽管饮食失调和睡眠问题常常同时出现，但关于它们之间关联的潜在机制的研究却很有限。以往使用生态瞬时评估（EMA）来评估睡眠质量与饮食失调行为（如失控进食、节食、催吐、过度运动）之间联系的研究，大多未发现具有统计学意义的时间关联；然而，有必要开展更大样本量的研究。我们使用EMA来评估睡眠质量以及次日饮食失调行为的参与情况。研究对象为137名年龄在18至25岁之间（M = 20.22，标准差 = 1.78）且目前存在饮食失调行为（DEB）的女性。参与者完成了为期七天的EMA，期间她们报告前一晚的睡眠质量，并每天回答六份关于参与DEB情况的调查问卷。DEB在日层面进行汇总，并分为存在或不存在（n = 438天）。我们进行了四项多水平逻辑回归分析，将天数嵌套在个体内部。我们以前一晚的睡眠质量和调查日作为固定效应，并以个体的随机截距来预测失控进食、催吐、节食和过度运动。结果表明，无论是个体间还是个体内的睡眠质量，均无法预测任何DEB的参与情况（所有p值均大于0.10）。这些发现重复了以往的研究结果，即睡眠质量与DEB参与情况之间不存在或几乎不存在前瞻性关联。其他睡眠指标（如睡眠和觉醒时间的变异性）可能预测DEB，或者这种关联可能因性别而异。未来的研究应跨性别考察主观和客观睡眠指标，以更好地理解睡眠与DEB之间的潜在联系。
