Smith A, Ralph A, McNeill G
Health Psychology Research Unit, School of Psychology, University of Wales College of Cardiff, U.K.
Appetite. 1991 Apr;16(2):85-91. doi: 10.1016/0195-6663(91)90034-p.
This study examined the effects of the size of the meal on post-lunch changes in attention, mood, blood pressure and pulse. Thirty-five females subjects were tested before and after lunch. One group (n = 12) were than given a normal-sized lunch, another (n = 11) were given a lunch designed to contain 40% more energy than their individual requirement and the third group (n = 12) had a lunch with an energy content 40% less than the estimated requirement. After lunch all groups of subjects reported that they felt more feeble, dreamy and bored, and less alert, excited, clear-headed, energetic, quick-witted, friendly, sociable and elated. However, the size of the meal did not alter the extent of the pre/post-meal differences. Similarly, there was no effect of meal size on pulse rate or blood pressure, although pre/post-meal differences were observed. In contrast, subjects who had a larger lunch than normal made more errors on focussed attention and search tasks (especially the search task) than those who had a normal-sized lunch or one which was smaller than normal.
本研究考察了进餐量对午餐后注意力、情绪、血压和脉搏变化的影响。35名女性受试者在午餐前后接受了测试。一组（n = 12）食用正常量的午餐，另一组（n = 11）食用的午餐能量比其个人需求量多40%，第三组（n = 12）食用的午餐能量比估计需求量少40%。午餐后，所有组的受试者均表示感觉更虚弱、多梦、厌烦，且警觉性、兴奋性、头脑清晰度、精力、机智、友好度、社交能力和愉悦感降低。然而，进餐量并未改变餐前/餐后差异的程度。同样，尽管观察到了餐前/餐后差异，但进餐量对脉搏率或血压没有影响。相比之下，午餐量比正常量多的受试者在注意力集中和搜索任务（尤其是搜索任务）上比食用正常量午餐或比正常量少的午餐的受试者犯的错误更多。
