Abstract
Effects of the exercise on lipid metabolism of rats were studied. Thirty-six male-Wistar rats were divided into three half-synthetic diet groups of Kinako, egg and milk. The Kinako group was fed with the diet of mixture of brown rice 2 and Kinako 1 in weight ratio. Eggand milk-groups were fed with the diet of animal protein ratio 50%, which was prepared by replacing some part of Kinako with dried-whole egg or whole-milk powder. Each of these three groups was subdivided into sedentary group (NE) and forced swimming (30 min/day) group (E).
Rats of the six groups were fed during the period from the 5-th week after birth to the 16th. The results obtained are as follows :
1) Body weight and adipose-tissue weight are lower in E than in NE for the Kinako- and egg-groups, whereas, for the milk group, no significant difference was found between E and NE groups.
2) HDL-cholesterol level, α-lipoprotein (α-Lp), and α-Lp/ (β-Lp+preβ-Lp) were higher in E than in NE for all the dietary groups.
Total cholesterol, triglyceride and total lipid level in serum were lower in E than in NE for egg- and milk-groups. No difference in α-Lp was found among the dietary groups, while preβ-Lp was found to be significantly lower in Kinako group than in egg- and milk-groups. These results suggested that synthetic fat in the body of Kinako group was lower than other two groups.
