Center for Weight, Eating, and Lifestyle Sciences (WELL Center), Drexel University, Stratton Hall, 3141 Chestnut Street, Philadelphia, PA, 19104, USA.
Department of Psychology, Drexel University, Stratton Hall, 3141 Chestnut Street, Philadelphia, PA, 19104, USA.
Eat Weight Disord. 2022 May;27(4):1547-1553. doi: 10.1007/s40519-021-01296-0. Epub 2021 Sep 15.
Body dissatisfaction (BD) is supported as a maintenance factor for eating disorders (EDs) characterized by binge eating (BE). Although it is traditionally conceptualized as a trait construct, ecological momentary assessment (EMA) studies have shown that it fluctuates within-day and that momentary elevations in BD prospectively predict near-time ED behaviors. However, less is known about the contextual factors that precipitate these fluctuations in BD.
The current study thus sought to examine whether certain internal (i.e., negative affect, shape/weight-related cognitions) and environmental (i.e., attending social events, being exposed to thin-ideal media, spending time on social media) factors prospectively predict momentary elevations in BD in females with BE. Participants (n = 25) completed an EMA protocol over 14 days.
Data on BD and internal and environmental factors were analyzed using generalized estimating equations. Results showed that (1) greater than one's usual negative affect and shape/weight-related cognitions, and (2) spending time on social media prospectively predicted momentary elevations in BD. Interestingly, attending social events prospectively predicted momentary reductions in BD.
These findings may have important implications for conceptualizing and managing BD to prevent ED behaviors.
Level II, controlled trial without randomization.
身体不满（BD）被认为是暴食症（BE）等饮食失调的维持因素。尽管它传统上被概念化为特质结构，但生态瞬时评估（EMA）研究表明，BD 会在一天内波动，并且瞬间升高会前瞻性地预测近期 ED 行为。然而，关于导致 BD 波动的情境因素知之甚少。
因此，本研究旨在探讨某些内部（即负面情绪、与体型/体重相关的认知）和环境（即参加社交活动、接触理想化的瘦媒体、花时间在社交媒体上）因素是否会预测 BE 女性的瞬间 BD 升高。参与者（n=25）在 14 天内完成了 EMA 协议。
使用广义估计方程分析了 BD 以及内部和环境因素的数据。结果表明，（1）比平时更多的负面情绪和与体型/体重相关的认知，以及（2）花时间在社交媒体上，都会前瞻性地预测瞬间升高的 BD。有趣的是，参加社交活动会前瞻性地预测瞬间降低的 BD。
这些发现对于理解和管理 BD 以预防 ED 行为可能具有重要意义。
无随机分组的 II 级对照试验。
