Department of Psychology, Virginia Commonwealth University, 800 West Franklin Street, P.O. Box 842018, Richmond, VA, 23284-2018, USA.
J Behav Med. 2022 Dec;45(6):894-903. doi: 10.1007/s10865-022-00338-x. Epub 2022 Aug 6.
Midlife women are vulnerable to developing obesity. Behavioral and psychosocial factors including sleep duration, stress eating, and negative emotionality are risk factors. However, little is known about the complex daily interplay between sleep, eating, emotion, and weight among midlife women. The current study examined how daily sleep, using food to cope, and negative emotionality are associated with weight using a daily process research design. An archival analysis was performed using the Midlife in the United States-II study (MIDUS II). The sample consisted of 489 midlife women (40-64 years of age). Variables included ecological momentary assessments of daily sleep duration, using food to cope, and negative affect (means and intraindividual variability) and a standardized measurement of BMI. Sleep duration variability was a significant predictor of BMI, albeit the model only accounted for .8% of the variance in BMI (b = .019, p < .05). In the final adjusted model, sleep duration variability, using food to cope, age, and physical activity were all significant predictors of BMI F(5, 559) = 21.503, p < .001, R = .161, ⨂R = .024, p = .001. Variability in negative affect, mean sleep duration or negative affect and the interactions between sleep duration (mean, variability) and negative affect (mean, variability) were not significant. Greater variability in sleep duration and greater use of food to cope predicted higher BMI in this sample across age and physical activity levels. Results highlight that daily health and psychosocial factors play an important role in weight.
中年女性易患肥胖症。行为和心理社会因素，包括睡眠时间、压力性进食和负性情绪，都是危险因素。然而，对于中年女性睡眠、进食、情绪和体重之间的复杂日常相互作用，我们知之甚少。本研究采用日常过程研究设计，考察了每日睡眠、用食物应对和负性情绪如何与体重相关。使用美国中年研究 II 期（MIDUS II）的档案资料进行了分析。样本包括 489 名中年女性（40-64 岁）。变量包括每日睡眠时长、用食物应对和负性情绪的生态瞬时评估（平均值和个体内变异性）以及 BMI 的标准化测量。睡眠时长变异性是 BMI 的一个重要预测指标，尽管该模型仅解释了 BMI 方差的 0.8%（b=0.019，p<.05）。在最终调整后的模型中，睡眠时长变异性、用食物应对、年龄和体力活动都是 BMI 的显著预测因子（F(5, 559)=21.503，p<.001，R=.161，∆R=.024，p=.001）。负性情绪的变异性、平均睡眠时长或负性情绪以及睡眠时长（均值、变异性）和负性情绪（均值、变异性）之间的交互作用均不显著。在该样本中，睡眠时长变异性增加和更多地使用食物应对，预示着在年龄和体力活动水平下 BMI 更高。结果表明，日常健康和心理社会因素在体重方面起着重要作用。
