Mason Tyler B, Lavender Jason M, Wonderlich Stephen A, Crosby Ross D, Engel Scott G, Mitchell James E, Crow Scott J, Le Grange Daniel, Peterson Carol B
Department of Clinical Research, Neuropsychiatric Research Institute, 120 8th Street S, Fargo, ND, 58103, USA.
Department of Psychiatry and Behavioral Science, University of North Dakota School of Medicine and Health Sciences, Fargo, ND, USA.
Eat Weight Disord. 2018 Oct;23(5):637-644. doi: 10.1007/s40519-017-0404-y. Epub 2017 Jun 6.
Appearance-related stress may result from appearance-focused events such as seeing one's reflection, seeing media images, and shopping for clothes. The purpose of this study was to examine the prospective association between momentary appearance-related stress and eating disorder (ED) behaviors (i.e., binge eating and vomiting) among women with anorexia nervosa (AN) using ecological momentary assessment (EMA). We hypothesized that appearance-related stress at Time 1 would predict binge eating and vomiting at Time 2, and that this prospective association would be mediated by momentary anxiety at Time 2 (controlling for anxiety at Time 1).
Women with AN completed a 2-week EMA protocol involving repeated daily assessments of experiences and behaviors.
Momentary appearance-related stress preceded binge eating and vomiting, and momentary anxiety mediated the prospective association between appearance-related stress and ED behaviors.
Targeted momentary interventions delivered in the natural environment that address appearance-related stress may have utility in the treatment of ED behaviors.
与外表相关的压力可能源于以外表为重点的事件，如看到自己的倒影、看到媒体形象以及购买衣服。本研究的目的是使用生态瞬时评估（EMA）来检验神经性厌食症（AN）女性中瞬时外表相关压力与饮食失调（ED）行为（即暴饮暴食和呕吐）之间的前瞻性关联。我们假设第1次的外表相关压力能够预测第2次的暴饮暴食和呕吐，并且这种前瞻性关联将由第2次的瞬时焦虑介导（控制第1次的焦虑）。
患有AN的女性完成了一项为期2周的EMA方案，该方案涉及对经历和行为的每日重复评估。
瞬时外表相关压力先于暴饮暴食和呕吐出现，并且瞬时焦虑介导了外表相关压力与ED行为之间的前瞻性关联。
在自然环境中实施的针对外表相关压力的有针对性的瞬时干预可能对治疗ED行为有用。
