Russell Sarah L, Haynos Ann F, Crow Scott J, Fruzzetti Alan E
Department of Social Work, St. Catherine University and the University of St. Thomas, St. Paul, MN, United States.
Department of Psychiatry, University of Minnesota Medical Center, Minneapolis, MN, United States.
Appetite. 2017 Mar 1;110:44-50. doi: 10.1016/j.appet.2016.12.007. Epub 2016 Dec 8.
There is research suggesting that binge eating may serve an affect regulation function. However, experimental evidence supporting this model in adults is sparse and studies have been mixed regarding whether negative affect impacts objective energy intake. This study examined the impact of a real-time interpersonal stressor on laboratory test meal intake between individuals endorsing recent objective binge eating (≥1×/week) and those denying disordered eating. Generalized linear modeling was used to compare individuals with recent binge eating (BE group; n = 52) to those denying recent eating pathology (HC group; n = 51) on test meal intake following a stressor (stressful condition) or neutral stimulus (non-stressful condition). Moderated mediation analyses were used to examine whether negative affect mediated the impact of condition on intake differently between BE and HC groups. The BE group did not have significantly higher energy intake than the HC group in the stressful verses non-stressful condition. However, the BE group was more likely to engage in extreme intake (i.e., over- or under-consumption) than the HC group in the stressful versus non-stressful condition (p = 0.02). Changes in negative affect did not significantly mediate the relationship between condition and intake extremes for the BE group. The results indicate that both over- and under-consumption are triggered by stress among individuals with recent binge eating. Continued research investigating both binge eating and restriction as a means of affect regulation in binge-eating samples is encouraged.
有研究表明，暴饮暴食可能具有情绪调节功能。然而，支持该模型的成人实验证据稀少，而且关于消极情绪是否会影响客观能量摄入的研究结果也不一致。本研究考察了实时人际应激源对近期有客观暴饮暴食行为（≥每周1次）者和否认有饮食失调者实验室测试餐摄入量的影响。采用广义线性模型，比较近期有暴饮暴食行为者（暴饮暴食组；n = 52）和否认近期有饮食病理者（健康对照组；n = 51）在应激源（应激条件）或中性刺激（非应激条件）后测试餐的摄入量。采用调节中介分析来检验消极情绪在暴饮暴食组和健康对照组中对条件对摄入量的影响的中介作用是否不同。在应激与非应激条件下，暴饮暴食组的能量摄入量并不显著高于健康对照组。然而，在应激与非应激条件下，暴饮暴食组比健康对照组更有可能出现极端摄入量（即过度或不足摄入）（p = 0.02）。消极情绪的变化并未显著中介暴饮暴食组条件与极端摄入量之间的关系。结果表明，近期有暴饮暴食行为者的过度和不足摄入均由压力引发。鼓励继续开展研究，将暴饮暴食和节食作为暴饮暴食样本中情绪调节手段进行调查。
