Expected satiety influences actual satiety
Expected satiety influences actual satiety
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预期饱腹感影响实际饱腹感
DOI：
10.1016/j.appet.2010.04.033
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发表时间：
2010
期刊：
影响因子：
5.4
通讯作者：
Brunstrom J
中科院分区：
文献类型：
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作者：
Brunstrom J
我们探索了这样一个假设，即我们期望食物赋予的饱腹感可以影响食物被食用后的实际饱腹感。在实验1中，我们通过告诉参与者（N= 32）“水果冰沙”包含少量或大量水果来操纵“预期饱腹感”。所有参与者都食用了相同的奶昔。然而，那些在“大量”的条件下，报告显着降低饥饿，0，1，2，和3小时后进餐终止。在实验2中，我们操纵了关于一餐中汤的体积的信息。午餐前，参与者被要求喝300毫升或500毫升的汤。与此正交，一半消耗300 ml，一半消耗500 ml。这一过程产生了四个独立的小组（每组25名参与者）。使用计算机控制的蠕动泵实现了对“实际”和“感知”汤部分的隐蔽和独立操纵。午餐后，自我报告的饥饿是由实际而不是感知的汤摄入量预测的。然而，2和3小时后，餐终止这种模式被逆转。饥饿是通过感知而不是实际数量来预测的。总之，这些发现证实了“预期饱腹感”的作用，并显示了最近进食事件的记忆如何影响餐间间隔的饱腹感。
We explored the hypothesis that the satiety that we expect a food to confer can influence the actual satiety that is experienced after it has been consumed. In Experiment 1 we manipulated ‘expected satiety’by telling participants (N= 32) that a ‘fruit smoothie’contained either a small or a large amount of fruit. All participants consumed the same smoothie. Nevertheless, those in the ‘large amount’condition reported significantly lower hunger, 0, 1, 2, and 3 h after meal termination. In Experiment 2 we manipulated information about the volume of soup consumed in a meal. Before lunch, participants were shown either 300 ml or 500 ml of soup. Orthogonal to this, half consumed 300 ml and half consumed 500 ml. This process yielded four separate groups (25 participants in each). Covert and independent manipulation of the ‘actual’and ‘perceived’soup portion was achieved using a computer-controlled peristaltic pump. Immediately after lunch, self-reported hunger was predicted by the actual and not the perceived amount of soup consumed. However, 2 and 3 h after meal termination this pattern was reversed. Hunger was predicted by the perceived and not the actual amount. Together, these findings confirm a role for ‘expected satiety’and show how memory for a recent eating episode can affect satiety in the inter-meal interval.