Danguir J
Appetite. 1987 Feb;8(1):49-53. doi: 10.1016/s0195-6663(87)80026-0.
Sleep patterns were continuously recorded in male Wistar rats receiving a palatable, mixed, high-energy diet with chow for ten consecutive days. Results were compared with sleep data obtained from the same rats when offered only normal laboratory chow. The "cafeteria" choice of diets resulted in a significant increase of the daily duration of both slow wave sleep (SWS) and paradoxical sleep (PS). SWS was increased during the light and dark phases of the day-night cycle, whereas PS was augmented only during the light phase. The increased sleep duration was mainly due to a significant lengthening of the respective episodes. When the cafeteria-diet was withdrawn, SWS and PS remained elevated for 3 days and 1 day, respectively before returning to normal levels. The present findings are discussed with regard to present knowledge of sleep mechanisms. A possible role of increased sleep in the development of obesity is also suggested.
连续十天给雄性Wistar大鼠喂食美味、混合、高能量饮食并搭配普通食物，同时持续记录其睡眠模式。将结果与仅给这些大鼠提供普通实验室食物时获得的睡眠数据进行比较。饮食的“自助餐”选择导致慢波睡眠（SWS）和异相睡眠（PS）的每日时长显著增加。SWS在昼夜周期的明相和暗相均增加，而PS仅在明相增加。睡眠时间的增加主要是由于各阶段时长显著延长。当撤掉自助餐饮食后，SWS和PS分别在保持升高3天和1天后才恢复到正常水平。结合当前关于睡眠机制的知识对本研究结果进行了讨论。还提出了睡眠增加在肥胖发生发展中可能起到的作用。
