Lowe Michael R, Arigo Danielle, Butryn Meghan L, Gilbert Jennifer R, Sarwer David, Stice Eric
Department of Psychology, Drexel University.
Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania.
Health Psychol. 2016 Mar;35(3):238-244. doi: 10.1037/hea0000291. Epub 2015 Dec 21.
The subjective feeling of loss of control (LOC) over eating is common among eating-disordered individuals and has predicted weight gain in past research. Restrained eating and negative affect are risk factors for binge eating (which involves LOC), but intense feelings of pleasure derived from palatable foods might also predict the emergence or intensification of LOC eating. The Power of Food Scale (PFS) assesses preoccupation with the pleasure derived from palatable food.
The current sample (n = 294) comprised female college freshmen at risk for weight gain. LOC was assessed using an abbreviated version of the Eating Disorders Examination interview. LOC was assessed at baseline and at 6-week and 12- and 24-month follow-ups.
Among those exhibiting LOC eating at baseline (and controlling for baseline depression, restrained eating, and body image dissatisfaction), those scoring higher on the PFS at baseline showed a smaller reduction in LOC frequency over time relative to those scoring lower. Using the same covariates, the PFS predicted the first emergence of LOC over 2 years among those showing no LOC at baseline.
These results suggest that powerful hedonic attraction to palatable foods may represent a risk factor for the maintenance of LOC in those initially experiencing it and the emergence of LOC eating in those who are not. An enhanced ability to identify individuals at increased risk of developing or maintaining LOC eating could be useful in prevention programs.
饮食失控(LOC)的主观感受在饮食失调个体中很常见,并且在过去的研究中已被预测会导致体重增加。节食和消极情绪是暴饮暴食(其中涉及LOC)的风险因素,但从美味食物中获得的强烈愉悦感也可能预示着LOC饮食的出现或加剧。食物力量量表(PFS)评估对从美味食物中获得愉悦感的关注程度。
当前样本(n = 294)由有体重增加风险的大学新生女性组成。使用饮食失调检查访谈的简化版本评估LOC。在基线、6周、12个月和24个月随访时评估LOC。
在基线时表现出LOC饮食的人群中(并控制基线抑郁、节食和身体形象不满),相对于得分较低者,基线时PFS得分较高者随着时间的推移LOC频率降低幅度较小。使用相同的协变量,PFS预测了基线时无LOC的人群在2年期间首次出现LOC的情况。
这些结果表明,对美味食物强烈的享乐吸引力可能是那些最初经历LOC的人维持LOC以及未经历LOC的人出现LOC饮食的一个风险因素。提高识别发生或维持LOC饮食风险增加的个体的能力,可能对预防计划有用。