Department of Psychology, Utrecht University, The Netherlands; Behavioural Science Institute, Radboud University Nijmegen, The Netherlands.
Department of Communication Science, VU University Amsterdam, The Netherlands.
Appetite. 2014 Jul;78:102-9. doi: 10.1016/j.appet.2014.03.014. Epub 2014 Mar 24.
Because eating behavior can take on an impulsive nature many people experience difficulty with dieting to lose weight. Therefore, an experiment was conducted to test the effectiveness of two interventions targeting impulsive processes of eating behavior to facilitate weight loss: Implementation intentions to remind people about dieting versus a go/no-go task to change impulses toward palatable foods. Dieters performed an online training program (four times in 4 weeks) in which they were randomly assigned to a 2 (implementation intention condition: dieting versus control) × 2 (go/no-go task condition: food versus control) design. They formed either dieting implementation intentions (e.g., If I open the fridge I will think of dieting!) or control implementation intentions. Furthermore, they received either a go/no-go task in which behavioral stop signals were presented upon presentation of palatable foods (food go/no-go task), or upon control stimuli. Participants' weight was measured in the laboratory before and after the intervention. Strength of participants' dieting goal and their Body Mass Index (BMI; as a proxy for impulsiveness toward food) were examined as moderators. Results showed that both dieting implementation intentions and the food go/no-go task facilitated weight loss. Moreover, dieting implementation intentions facilitated weight loss particularly among people with a strong current dieting goal, whereas the food go/no-go task facilitated weight loss independent of this factor. Instead, the food go/no-go task, but not formation of dieting implementation intentions, was primarily effective among dieters with a relatively high BMI. These results provide the first preliminary evidence that interventions aimed at targeting impulsive eating-related processes via the internet can facilitate weight loss.
由于进食行为可能具有冲动性，许多人在节食减肥方面存在困难。因此，进行了一项实验，以测试两种针对进食行为冲动过程的干预措施的有效性，以促进体重减轻：实施意图提醒人们节食，而go/no-go 任务则改变对美味食物的冲动。节食者进行了在线培训计划（在 4 周内进行 4 次），他们被随机分配到 2（实施意图条件：节食与对照）×2（go/no-go 任务条件：食物与对照）设计中。他们制定了节食实施意图（例如，如果我打开冰箱，我会想到节食！）或对照实施意图。此外，他们要么接受了 go/no-go 任务，其中在呈现美味食物时呈现行为停止信号（食物 go/no-go 任务），要么呈现对照刺激。参与者在干预前后在实验室测量体重。参与者的节食目标强度和他们的体重指数（BMI；作为对食物冲动性的替代指标）被作为调节因素进行了检查。结果表明，节食实施意图和食物 go/no-go 任务都促进了体重减轻。此外，节食实施意图特别促进了那些当前节食目标强烈的人的体重减轻，而食物 go/no-go 任务则独立于这一因素促进了体重减轻。相反，食物 go/no-go 任务，而不是节食实施意图的形成，主要对 BMI 相对较高的节食者有效。这些结果首次提供了初步证据，表明通过互联网针对冲动性与进食相关的过程的干预措施可以促进体重减轻。
