Eleanor Rathbone Building, University of Liverpool,Liverpool L69 7ZA,UK.
University of Birmingham,Edgbaston, Birmingham B15 2TT,UK.
Br J Nutr. 2014 Aug 28;112(4):657-61. doi: 10.1017/S000711451400141X. Epub 2014 Jun 16.
Attentional and memory processes underpin appetite control, but whether encouraging overweight individuals to eat more 'attentively' can promote reductions in energy consumption is unclear. In the present study with a between-subjects design, a total of forty-eight overweight and obese females consumed a fixed lunchtime meal. Their ad libitum energy intake of high-energy snack food was observed during a second laboratory session that occurred later that day. In the focused-attention condition, participants ate their lunch while listening to audio instructions that encouraged them to pay attention to the food being eaten. In a control condition, participants ate while listening to an audio book with a neutral (non-food-related) content. To test whether focused attention influenced food intake via enhancing the memory of the earlier consumed meal, we measured the participants' memory of their lunchtime meal. Ad libitum snack intake was approximately 30 % lower for participants in the focused-attention condition than for those in the control condition, and this difference was statistically significant. There was limited evidence that attention decreased later food intake by enhancing memory representation of the earlier consumed meal. Eating attentively can lead to a substantial decrease in later energy intake in overweight and obese individuals. Behavioural strategies that encourage a more 'attentive' way of eating could promote sustained reductions in energy intake and weight loss.
注意和记忆过程是食欲控制的基础,但鼓励超重个体更“专注”地进食是否能促进能量消耗的减少尚不清楚。在本项采用被试间设计的研究中,共有 48 名超重和肥胖女性在当天晚些时候的第二次实验室就诊中食用了固定的午餐。在随后的自由进食时间里,观察她们对高热量零食的能量摄入。在集中注意力条件下,参与者在听音频指导时进食,这些指导鼓励他们注意所吃的食物。在对照条件下,参与者在听与食物无关的中性内容的有声读物时进食。为了测试集中注意力是否通过增强对先前摄入的食物的记忆来影响食物摄入,我们测量了参与者对午餐的记忆。与对照条件相比,集中注意力条件下的参与者自由进食的零食摄入量大约低 30%,这一差异具有统计学意义。有有限的证据表明,注意力通过增强对先前摄入的食物的记忆来减少后续的食物摄入。在超重和肥胖个体中,专注进食可以导致后续能量摄入的大量减少。鼓励更“专注”进食方式的行为策略可能会促进能量摄入和体重的持续减少。