Department of Experimental Psychology, University of Oxford, UK.
Department of Experimental Psychology, University of Oxford, UK.
Appetite. 2018 Dec 1;131:73-83. doi: 10.1016/j.appet.2018.09.007. Epub 2018 Sep 10.
In our food-rich environment we must constantly resist appealing food in order to maintain a healthy lifestyle. Previous studies have found that food-specific inhibition training can produce changes in eating behaviour, such as a reduction in snack consumption. However, the mechanisms that drive the effect of inhibition training on eating behaviour remain unknown. Identifying the mechanism underlying food-specific inhibition training could lead to more targeted training interventions increasing the potential efficacy of such interventions. In the current study, we investigated directly whether training-induced effects on inhibitory control might underlie the predicted change in eating behaviour. Healthy individuals who scored high on uncontrolled eating were randomly assigned to receive six online training sessions over six consecutive days of either food-specific response inhibition training (active group; n = 21) or response inhibition training without food stimuli (control group; n = 20). We measured pre- and post-training inhibitory control in the context of food and food cue sensitivity, as well as food consumption in a bogus taste test. As expected, food-specific inhibition training decreased snack consumption in the bogus taste test relative to control training. However, the active training did not improve inhibitory control towards food, nor did it reduce food cue sensitivity above and beyond the control training. Future studies are needed to investigate the potential underlying mechanism of food-specific inhibition training, as it remains unclear what drives the reliable effect on eating behaviour.
在我们食物丰富的环境中，我们必须不断抵制诱人的食物，以保持健康的生活方式。先前的研究发现，特定食物的抑制训练可以改变饮食行为，例如减少零食的摄入。然而，驱动抑制训练对饮食行为影响的机制尚不清楚。确定特定食物抑制训练的机制可能会导致更有针对性的训练干预，从而提高这种干预的潜在效果。在目前的研究中，我们直接研究了抑制训练引起的抑制控制变化是否是预测的饮食行为变化的基础。评分高的无控制饮食的健康个体被随机分配到连续六天接受六次在线训练，分别接受特定食物的反应抑制训练（实验组；n=21）或没有食物刺激的反应抑制训练（对照组；n=20）。我们在食物和食物线索敏感性的背景下测量了训练前后的抑制控制，以及在虚假味觉测试中的食物消耗。正如预期的那样，与对照组相比，特定食物的抑制训练减少了虚假味觉测试中的零食摄入。然而，与对照组相比，实验组的抑制控制并没有改善，也没有降低食物线索敏感性。未来的研究需要进一步探讨特定食物抑制训练的潜在机制，因为目前尚不清楚是什么驱动了对饮食行为的可靠影响。
