Acute exposure to a high-fat diet alters meal patterns and body composition

作者：Melhorn Susan J^*; Krause Eric G; Scott Karen A; Mooney Marie R; Johnson Jeffrey D; Woods Stephen C; Sakai Randall R

来源：Physiology & Behavior, 2010, 99(1): 33-39.

DOI：10.1016/j.physbeh.2009.10.004

• Meal patterns
• High-fat diet
• Body weight
• Body composition

Weight gain and adiposity are often attributed to the overconsumption of unbalanced, high-fat diets however, the pattern of consumption can also contribute to associated body weight and compositional changes. The present Study explored the rapid alterations in meal patterns of normal-weight rats given continuous access to high-fat diet and examined body weight and composition changes compared to chow fed controls. Ten Long-Evans rats were implanted with Subcutaneous microchips for meal pattern analysis. Animals were body weight matched and separated into two groups: high-fat or chow fed. Each group was maintained on their assigned diet for nine days and monitored for 22 h each day for meal pattern behavior. Body weight was evaluated every other day, and body composition measures were taken prior and following diet exposure. High-fat fed animals gained more weight and adipose tissue than chow fed controls and displayed a reduced meal frequency and increased meal size. Furthermore, meal size was significantly correlated with the gain of adipose tissue. Together, these results Suggest that consumption of a high-fat diet can rapidly alter meal patterns, which in turn contribute to the development of adiposity. Published by Elsevier Inc.

• 出版日期2010-1