Effects of eating rate on satiety: A role for episodic memory?
Effects of eating rate on satiety: A role for episodic memory?
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DOI：
10.1016/j.physbeh.2015.06.038
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发表时间：
2015-12-01
影响因子：
2.9
通讯作者：
Brunstrom JM
中科院分区：
文献类型：
--
作者：
Ferriday D;Bosworth ML;Lai S;Godinot N;Martin N;Martin AA;Rogers PJ;Brunstrom JM
吃得慢与较低的体重指数有关。然而，对潜在的机制知之甚少。在这里，我们的目标是确定是否以缓慢的速度吃饭可以改善对这顿饭的情景记忆并促进饱腹感。参与者（N = 40）以快速（1.97 ml/s）或慢速（0.50 ml/s）的速度饮用400 ml番茄汤。在基线和用餐结束时（饱食）进行食欲评级。饱腹感评估使用; i）随意饼干“口味测试”（餐后3小时）和ii）食欲评级（餐后2小时和随意零食后收集）。最后，为了评估这顿饭的情景记忆，参与者自己提供了他们认为自己早些时候喝过的汤的体积（份量记忆），并完成了记忆“生动性”的评级。慢慢喝汤的参与者报告说，在餐末和餐间休息时，饱腹感都有更大的增加。然而，我们发现进食速度对随后的随意零食摄入量的影响很小。重要的是，3小时后，喝汤的参与者慢慢地记得吃了更多的汤。这些发现表明，慢慢进食会促进自我报告的饱腹感和饱腹感。他们还首次提出，进食速度会影响份量记忆。然而，吃得慢并不影响记忆生动性的评级，我们发现情节记忆和饱腹感之间的关系几乎没有证据。因此，我们不能得出结论，情节记忆介导的进食速度对饱腹感的影响。吃午餐的速度较慢，促进更大的饱腹感和饱腹感。参与者记得如果他们吃得慢，他们会吃得更大。以较慢的速度吃午餐不会影响随后的零食摄入量。进食速度对饱腹感的影响可能不受情景记忆的影响。
Eating slowly is associated with a lower body mass index. However, the underlying mechanism is poorly understood. Here, our objective was to determine whether eating a meal at a slow rate improves episodic memory for the meal and promotes satiety. Participants (N = 40) consumed a 400 ml portion of tomato soup at either a fast (1.97 ml/s) or a slow (0.50 ml/s) rate. Appetite ratings were elicited at baseline and at the end of the meal (satiation). Satiety was assessed using; i) an ad libitum biscuit ‘taste test’ (3 h after the meal) and ii) appetite ratings (collected 2 h after the meal and after the ad libitum snack). Finally, to evaluate episodic memory for the meal, participants self-served the volume of soup that they believed they had consumed earlier (portion size memory) and completed a rating of memory ‘vividness’. Participants who consumed the soup slowly reported a greater increase in fullness, both at the end of the meal and during the inter-meal interval. However, we found little effect of eating rate on subsequent ad libitum snack intake. Importantly, after 3 h, participants who ate the soup slowly remembered eating a larger portion. These findings show that eating slowly promotes self-reported satiation and satiety. For the first time, they also suggest that eating rate influences portion size memory. However, eating slowly did not affect ratings of memory vividness and we found little evidence for a relationship between episodic memory and satiety. Therefore, we are unable to conclude that episodic memory mediates effects of eating rate on satiety. Eating lunch at a slower rate promotes greater satiation and satiety. Participants remember eating a larger meal if they eat it slowly. Eating lunch at a slower rate does not affect subsequent snack-food intake. Effects of eating rate on satiety might not be mediated by episodic memory.