Abstract: Objective To compare the effects of exercise and high-fat diets on body weight and metabolism in rats.Methods Immature rats were given high-fat diets(fish oil,palm oil,or soybean oil)for weeks,and then were divided randomly into 2 groups:rest group and exercise group.Rats in exercise group were given swimming exercise for 6 weeks,and were sacrificed 24 h after the last swimming exercise.The body weight,the serum levels of leptin,insulin,glucose,and I/G ratio were measured.Results High-fat diets with soybean...