Mok E, Thibault L
School of Dietetics and Human Nutrition, McGill University, Ste. Anne de Bellevue, QC, Canada.
Physiol Behav. 1999;65(4-5):893-9. doi: 10.1016/s0031-9384(98)00222-4.
To examine whether the diurnal rhythms of protein-rich and carbohydrate-rich diet ingestion can be altered by presenting the diets in different textural forms, adult male Wistar rats were assigned to two dietary groups. One group received a two-way choice between high-protein powder and high-carbohydrate granular (HPP-HCG) diets. In the other group the textures were reversed [high-protein granular and high-carbohydrate powder (HPG-HCP) diets]. Rats fed HPP-HCG diets selected significantly less protein (kcal) vs. rats fed HPG-HCP diets, during the 24-h and 12-h dark phase and during the 4-h early and late dark phases. Carbohydrate intakes of the two dietary groups were not significantly different. Total caloric intake for the HPG-HCP dietary group was significantly higher than that of the HPP-HCG dietary group during the 24-h and 12-h dark phase. Body weight was significantly lower in rats fed HPP-HCG diets. In conclusion, macronutrient-rich diets presented in different textural forms alter protein-rich diet ingestion and total energy intake.
为了研究以不同质地形式提供富含蛋白质和富含碳水化合物的饮食是否会改变其昼夜节律，将成年雄性Wistar大鼠分为两个饮食组。一组在高蛋白粉末和高碳水化合物颗粒（HPP-HCG）饮食之间进行双向选择。另一组的质地则相反[高蛋白颗粒和高碳水化合物粉末（HPG-HCP）饮食]。在24小时和12小时黑暗期以及4小时早期和晚期黑暗期，与喂食HPG-HCP饮食的大鼠相比，喂食HPP-HCG饮食的大鼠选择的蛋白质（千卡）明显更少。两个饮食组的碳水化合物摄入量没有显著差异。在24小时和12小时黑暗期，HPG-HCP饮食组的总热量摄入明显高于HPP-HCG饮食组。喂食HPP-HCG饮食的大鼠体重明显更低。总之，以不同质地形式呈现的富含大量营养素的饮食会改变富含蛋白质的饮食摄入和总能量摄入。
