“几项研究告诉我们,分心会让人吃更多,”布伦斯特伦说,“这里,我们进一步延伸这一结果,告诉大家分心吃饭的影响饭后也能显现。”
那么,谈话或看报纸等行为是否会影响食欲?
一项实验室研究表明,无论吃饭时看电视还是与朋友交谈,都会令人不知不觉吃下更多食物。另一项研究表明,吃饭时听广播同样会令人食欲大增。Am J Clin Nutr doi: 10.3945/ajcn.110.004580
Playing a computer game during lunch affects fullness, memory for lunch, and later snack intake1,2
Rose E Oldham-Cooper, Charlotte A Hardman, Charlotte E Nicoll, Peter J Rogers, and Jeffrey M Brunstrom
Abstract
Background: The presence of distracting stimuli during eating increases the meal size and could thereby contribute to overeating and obesity. However, the effects of within-meal distraction on later food intake are less clear.
Objective: We sought to test the hypothesis that distraction inhibits memory encoding for a meal, which, in turn, increases later food intake.
Design: The current study assessed the effects of playing solitaire (a computerized card-sorting game) during a fixed lunch, which was eaten at a fixed rate, on memory for lunch and food intake in a taste test 30 min later. A between-subjects design was used with 44 participants. Participants in the no-distraction group ate the same lunch in the absence of any distracting stimuli.
Results: Distracted individuals were less full after lunch, and they ate significantly more biscuits in the taste test than did nondistracted participants (mean intake: 52.1 compared with 27.1 g; P = 0.017). Furthermore, serial-order memory for the presentation of the 9 lunch items was less accurate in participants who had been distracted during lunch.
Conclusions: These findings provide further evidence that distraction during one meal has the capacity to influence subsequent eating. They may also help to explain the well-documented association between sedentary screen-time activities and overweight.