Sandretto A M, Tsai A C
Human Nutrition Program, School of Public Health, University of Michigan, Ann Arbor.
Am J Clin Nutr. 1988 Feb;47(2):175-9. doi: 10.1093/ajcn/47.2.175.
Effects of fat intake on body composition and lipogenic enzyme activities were examined in hamsters. Forty-two female hamsters were randomly divided into two groups of 21 each. One group had access to voluntary disc running; the other group was sedentary. All were fed a low-fat, high-carbohydrate diet. After 30 d, seven hamsters from each group were killed and all running activity was discontinued. Remaining hamsters were separately assigned to two groups of seven and fed either a low-fat or high-fat diet for 7 d and then killed. Voluntary running increased food intake and weight gain and reduced body fat (52%). Cessation of exercise greatly enhanced body fat gain. High-fat diet enhanced weight gain. Increased energy intake during postexercise period appeared to cause enhanced body fat gain. The high-fat diet suppressed lipogenic enzyme activities. Serum triglyceride, total cholesterol, and HDL cholesterol levels were not affected by exercise or cessation of exercise.
在仓鼠身上研究了脂肪摄入量对身体成分和脂肪生成酶活性的影响。42只雌性仓鼠被随机分为两组，每组21只。一组可以自愿进行圆盘跑步；另一组则久坐不动。所有仓鼠都喂食低脂、高碳水化合物饮食。30天后，每组处死7只仓鼠，并停止所有跑步活动。其余仓鼠被分别分成两组，每组7只，分别喂食低脂或高脂饮食7天，然后处死。自愿跑步增加了食物摄入量和体重增加，并减少了体脂（52%）。停止运动极大地增强了体脂增加。高脂饮食增强了体重增加。运动后期间能量摄入增加似乎导致了体脂增加增强。高脂饮食抑制了脂肪生成酶的活性。血清甘油三酯、总胆固醇和高密度脂蛋白胆固醇水平不受运动或停止运动的影响。
