Mindful eating: Memory for meal size controls hunger in the inter-meal interval
Mindful eating: Memory for meal size controls hunger in the inter-meal interval
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正念饮食：对膳食量的记忆可以控制餐间间隔的饥饿感
DOI：
10.1016/j.appet.2011.05.018
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发表时间：
2011
期刊：
影响因子：
5.4
通讯作者：
Brunstrom J
中科院分区：
文献类型：
--
作者：
Brunstrom J
在这项研究中，我们探索了这样一种假设，即视觉信息在食物被食用后的饱足感中起着因果作用。午餐前，一半受试者喝300毫升的汤，一半受试者喝500毫升的汤。与此正相关的是，一半受试者喝300毫升汤，另一半受试者喝500毫升汤。这一过程产生了四组不同的参与者(每组25名参与者)。通过计算机控制的蠕动泵，实现了对“实际”和“感知”汤部分的独立操作。这是为了秘密地从汤碗里补充或提取汤而设计的。午餐后，自我报告的饥饿感是由实际的而不是感知的汤量来预测的。然而，在用餐后2小时和3小时，这一模式发生了逆转。饥饿是通过感知的量来预测的(那些认为他们已经摄入了500毫升的参与者报告说他们的饥饿感明显减少了)，而不是实际的量。这种对感知摄入量和实际摄入量的独立控制揭示了记忆过程和摄食后信号对饱腹感的单独贡献。总而言之，我们的发现证实了“预期饱腹感”的作用，并展示了对最近进食事件的记忆如何影响餐间间隙的饱腹感。
In this study we explored the hypothesis that visual information plays a causal role in the satiety that is experienced after a food has been consumed. Before lunch, half of our participants were shown 300 ml of soup and half were shown 500 ml. Orthogonal to this, half consumed 300 ml and half consumed 500 ml. This process yielded four separate groups (25 participants in each). Independent manipulation of the ‘actual’and ‘perceived’soup portion was achieved using a computer-controlled peristaltic pump. This was designed to either refill or draw soup from the soup bowl in a covert manner. Immediately after lunch, self-reported hunger was predicted by the actual and not the perceived amount of soup consumed. However, two and three hours after meal termination this pattern was reversed. Hunger was predicted by the perceived amount (participants who thought they had consumed the 500 ml portion reported significantly less hunger) and not the actual amount. This independent manipulation of perceived and actual intake reveals the separate contribution of memory processes and post-ingestive signals to satiety. Together, our findings confirm a role for ‘expected satiety’and show how memory for a recent eating episode can affect satiety in the inter-meal interval.