Department of Human Nutrition, University of Otago, Dunedin, New Zealand.
Eur J Clin Nutr. 2010 Feb;64(2):224-6. doi: 10.1038/ejcn.2009.133. Epub 2009 Nov 25.
A crossover study was designed to determine whether the fat and carbohydrate contents of evening meals consumed the night preceding glycaemic index (GI) testing had an effect on the GI. Twenty participants consumed two different evening meals in which the energy contributions from fat, carbohydrate and protein were in the ratio 50:30:15 and 25:60:15, respectively. Each participant completed eight tests that involved two evening meals with different macronutrient compositions followed the next morning by two treatments, glucose beverage or fruit bread, all carried out in duplicate. The GI of fruit bread was determined on the mornings following each of the evening meals. The GIs (95% CI) were 68 (60, 76) and 59 (52, 67) after the high-carbohydrate and high-fat meals, respectively, and were not different (P=0.11). Thus, varying the fat and carbohydrate contents of the evening meal before GI testing the next morning did not affect the GI.
一项交叉研究旨在确定前一天晚上摄入的晚餐中脂肪和碳水化合物的含量对血糖生成指数（GI）测试结果的影响。二十名参与者分别食用两种不同的晚餐，其中脂肪、碳水化合物和蛋白质的能量贡献比例分别为 50:30:15 和 25:60:15。每位参与者完成了八项测试，其中包括两种不同宏量营养素组成的晚餐，第二天早上再进行两种处理，即葡萄糖饮料或水果面包，均重复进行两次。在每次晚餐后的第二天早上测定水果面包的 GI。高碳水化合物和高脂肪餐的 GI（95%CI）分别为 68（60，76）和 59（52，67），两者无差异（P=0.11）。因此，在前一天晚上的晚餐中改变脂肪和碳水化合物的含量，不会影响第二天早上的 GI 值。
