Limited access to a dietary fat option affects ingestive behavior but not body composition in male rats
Limited access to a dietary fat option affects ingestive behavior but not body composition in male rats
复制标题
DOI：
10.1016/s0031-9384(98)00201-7
复制
发表时间：
1998-12-01
影响因子：
2.9
通讯作者：
Young, MA
中科院分区：
文献类型：
--
作者：
Corwin, RL;Wojnicki, FHE;Young, MA
限制获得高脂肪食物是促进健康的一种常见策略。然而，这种策略可能会导致过度消费的事件，当限制食品随后变得可用时。本研究利用大鼠喂养程序，以确定是否限制获得可选的膳食脂肪来源会增加后来的消费，在非能量剥夺条件下的食物。使用五组雄性Sprague-Dawley大鼠，所有大鼠均连续获得标准啮齿动物饮食和水。而对照组则无法获得缩短。低限制组每天缩短2小时。高限制组在周一、周三和周五有2小时的缩短时间。另外两组在高和低条件之间切换。每天测量2小时和24小时的食物摄入量，持续6周。在研究结束时，处死大鼠并测定尸体组成。随着缩短的减少，2小时访问期间的消费增加。大鼠通过减少标准饮食的摄入来补偿增加的起酥油消耗。因此，各组之间的累积能量消耗没有差异。当在高和低条件之间切换时，大鼠迅速适应缩短可用性的变化。访问时间表对胴体组成没有影响。这些结果表明，限制获得一种可选的高脂肪食物，即使在非能量剥夺条件下，也可以促进该食物消费的显着增加。(C)1998年爱思唯尔科学公司
Restricting access to high-fat foods is a common strategy utilized to promote health. This strategy may contribute to episodes of overconsumption, however, when the restricted foods subsequently become available. The present study utilized a rat feeding procedure to determine if restricting access to an optional source of dietary fat would increase later consumption of that food under nonenergy-deprived conditions. Five groups of male Sprague-Dawley rats were used, all of which had continuous access to a standard rodent diet and water. The control group had no access to shortening. The low-restriction group had 2-h access to shortening every day. The high-restriction group had 2-h access to shortening on Monday, Wednesday, and Friday. Two additional groups were switched between the high and low conditions. Two-hour and 24-h food intakes were measured every day for 6 weeks. At the end of the study rats were sacrificed and carcass composition determined. As access to the shortening decreased, consumption during the 2-h access period increased. Rats compensated for the increased shortening consumption by decreasing intake of the standard diet. Thus, cumulative energy consumption did not differ among the groups. When switched between the high and low conditions, rats rapidly adjusted to the change in shortening availability. There were no effects of access schedule on carcass composition. These results indicate that restricting access to an optional high-fat food, even under nonenergy-deprived conditions, can promote significant increases in the consumption of that food when it subsequently becomes available. (C) 1998 Elsevier Science Inc.