Grazing, cognitive performance and mood
Grazing, cognitive performance and mood
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DOI：
10.1016/j.appet.2008.09.008
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发表时间：
2009-02-01
期刊：
影响因子：
5.4
通讯作者：
Lucas, Eva
中科院分区：
文献类型：
--
作者：
Hewlett, Paul;Smith, Andrew;Lucas, Eva
研究人员进行了两项实验，以考察在两次或四次之间分散食物摄入量对情绪和认知的影响。第一个实验使用了96名受试者之间的设计，参与者在09：00和13：00喝了两杯奶昔，或者在09：00、11：00、13：00和15：00喝了四杯(营养含量一半但相同体积)奶昔。结果表明，在四杯奶昔条件下，言语推理的准确率有所提高。第二个实验采用了交叉设计，共有24名参与者。早餐和午餐在一种情况下减半，而在另一种情况下不减半，因此参与者要么吃早餐和午餐，要么在实验1的同一时间吃四顿饭。通过将摄入分散在四顿饭中，语言推理的准确性得到了提高，错误减少了30%到40%。在五个项目(但不是一个项目)的搜索任务中，速度也有所提高。现在有必要进行进一步的研究，以揭示这些效应背后的机制。(C)2008爱思唯尔有限公司。保留所有权利。
Two experiments were carried out to examine how spreading food intake between either two or four occasions would affect mood and cognition. The first experiment used 96 participants in a between subject design where participants received either two milkshakes at 09:00 and 13:00 or four (half nutrient content but same volume) milkshakes at 09:00,11:00, 13:00 and 15:00. The results showed that verbal reasoning accuracy improved in the four-milkshake condition. The second experiment used 24 participants in a cross-over design. The breakfast and lunch were halved in one condition and not in the other so participants either ate breakfast and lunch, or four meals at the same times as experiment 1. Verbal reasoning accuracy was improved by spreading the intake over four meals such that errors were reduced by between 30 and 40%. Speed was also increased in a five-item (but not one-item) search task. Further research is now necessary to uncover the mechanisms that underlie these effects. (C) 2008 Elsevier Ltd. All rights reserved.