Rowe E A, Rolls B J
Physiol Behav. 1982 Feb;28(2):219-26. doi: 10.1016/0031-9384(82)90065-8.
We have investigated how differences in environmental temperature interact with diet-content and palatability to affect body weight and energy intake. Adult male hooded Lister rats kept at 18 degrees C or 25 degrees C became obese after over-consumption of palatable, high energy foods. The difference in body weight between the obese rats kept at 18 degrees C and their chow-fed control group was in part attributable to reductions in the growth of the controls kept at 18 degrees C. The obese rats at 18 degrees C had greater body weight gains relative to chow-fed controls than equivalent groups at 25 degrees C. All groups at 18 degrees C had greater energy intakes than equivalent groups at 25 degrees C. Withdrawal of high energy foods led to greater weight loss in rats which had been eating a diet which was varied every day than in rats which had been eating three constantly available high energy foods. Weight losses after diet withdrawal were also greater in obese groups kept at 18 degrees C than in those kept at 25 degrees C. Carcass fat determinations demonstrated that the varied diet-withdrawn rats kept at 18 degrees C did not have persistently elevated body fat stores, but the other diet-withdrawn groups were persistently obese. Therefore lower environmental temperature, and enhanced diet-palatability interact additively to increase energy intakes during cafeteria feeding, and to increase weight losses after withdrawal of palatable foods.
我们研究了环境温度差异如何与饮食内容和适口性相互作用，从而影响体重和能量摄入。成年雄性利斯特黑帽大鼠饲养在18摄氏度或25摄氏度环境中，过度食用可口的高能量食物后会变得肥胖。饲养在18摄氏度的肥胖大鼠与其食用普通饲料的对照组之间的体重差异，部分归因于饲养在18摄氏度的对照组生长减缓。与饲养在25摄氏度的同等组相比，饲养在18摄氏度的肥胖大鼠相对于食用普通饲料的对照组体重增加更多。所有饲养在18摄氏度的组比饲养在25摄氏度的同等组能量摄入量更高。停止供应高能量食物后，与食用三种随时可得的高能量食物的大鼠相比，食用每天更换不同食物的大鼠体重减轻更多。停止喂食后，饲养在18摄氏度的肥胖组体重减轻也比饲养在25摄氏度的组更多。胴体脂肪测定表明，饲养在18摄氏度、停止喂食多样化食物的大鼠并没有持续升高的体脂储存，但其他停止喂食的组则持续肥胖。因此，较低的环境温度和增强的饮食适口性相互叠加，在自助餐式喂养期间增加能量摄入，并在停止供应可口食物后增加体重减轻。
