Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, 3435 Main Street, 1 Farber Hall, Buffalo, NY 14214, USA.
Psychopharmacology (Berl). 2013 Jun;227(3):425-36. doi: 10.1007/s00213-013-2971-6. Epub 2013 Jan 26.
Caffeine has been shown to increase preference for beverages with which it is paired; however, it is not known if caffeine alters liking for foods with which it is paired indirectly.
The purpose of the current experiment was to test the hypothesis that a caffeinated beverage paired with a novel-flavored yogurt will increase preference for that yogurt compared to one paired with placebo. We also tested the hypothesis that liking would increase more when caffeine was paired with high energy density yogurt.
Men and women (n = 62) were randomized to receive a beverage containing placebo (PLA) or caffeine (CAF) and to consume a low (LED) or high energy density (HED), novel-flavored yogurt. Participants rated, ranked, and consumed seven novel-flavored yogurts and then had a target yogurt paired with either PLA or CAF over four consecutive days.
In general, yogurt liking increased over time, the HED yogurt was liked more than the LED yogurt, and yogurt paired with caffeine was liked more than yogurt paired with placebo. Participants showed a significant increase in liking of LED yogurt paired with caffeine compared to those with LED yogurt paired with placebo.
Caffeine administration may increase liking and consumption of novel-flavored foods, particularly if the food is not highly liked at baseline. This suggests that caffeine pairing may be a way to increase liking of LED foods, such as vegetables and fruit.
已有研究表明，咖啡因可增加与自身搭配的饮料的偏好；但目前尚不清楚咖啡因是否会间接改变人们对与自身搭配的食物的喜爱程度。
本实验旨在验证以下假设：与含咖啡因的饮料搭配的新型风味酸奶与与安慰剂搭配的酸奶相比，会增加人们对该酸奶的偏好。我们还测试了这样一种假设，即当咖啡因与高能量密度酸奶搭配时，人们的喜爱程度会增加更多。
将男性和女性（n=62）随机分为接受含安慰剂（PLA）或咖啡因（CAF）饮料的两组，并摄入低（LED）或高能量密度（HED）、新型风味酸奶。参与者对七种新型风味酸奶进行了评分、排序和食用，然后在四天内将目标酸奶与 PLA 或 CAF 搭配食用。
总体而言，随着时间的推移，酸奶的喜爱程度增加，高能量密度酸奶比低能量密度酸奶更受欢迎，与咖啡因搭配的酸奶比与安慰剂搭配的酸奶更受欢迎。与安慰剂相比，与咖啡因搭配的低能量密度酸奶的喜爱程度显著增加。
咖啡因的摄入可能会增加对新型风味食物的喜爱和摄入，尤其是在食物的基础喜好度不高的情况下。这表明咖啡因搭配可能是增加对高能量密度食物（如蔬菜和水果）的喜爱的一种方法。
