The purpose of this study was to compare the anthropometry, serum lipid levels, dietary behavior and health-related behaviors of shipbuilding workers. The education level was significantly higher in office workers than laborers, while age, monthly income and working years were not significantly different between both groups. The serum triglyceride, glucose concentration and AI were significantly higher in office workers than in laborers, but the serum LDL-cholesterol and HDL-cholesterol concentrations were significantly higher in laborers than in office workers. The frequency of breakfast and coffee intake was significantly higher in office workers than in laborers. In the office workers, age was positively correlated with systolic blood pressure but was negatively correlated with hemoglobin and hematocrit concentration In the laborers, working year was negatively correlated with hemoglobin, total cholesterol and serum LDL cholesterol concentrations. Exercise was negatively correlated with total cholesterol concentration, triglyceride and LDL-cholesterol concentration and AI in the office workers. The results of this study showed that office workers are more prone to related chronic degenerative diseases. Therefore, nutritional education for the provention of chronic degenerative diseases of shipbuilding workers needs to be more focused on improving the health status of office workers.

The purpous of the study was to find an effect of oral administered medium chain triglyceride(MCT) diet on the serum and enzyme activities of Spraque-Dawly rats when they were oral fed with MCT, soybean oil and palm oil. The result was as follow. 1) The body weight gains in MCT diet group was lower than that of the all experimental group. 2) Total cholesterol levels in serum and liver of MCT diet group were very lower than that of the all experimental groups. 3) HDL-cholesterol level of MCT diet group was higher than that of the all experimental group except normal group and VLDL, LDL-cholesterol levels was very higher. 4) TG and PL levels of MCT diet group higher than that of the control group. 5) The activities of GOT with soybean oil diet group and of GPT with MCT diet group were lower than that of the all experimental group. 6) HDL-levels in the serum lipoprotein of MCT diet group was increased and LDL levels was decreased.

To investigate the effect of feeding rats medium-chain triglyceride(MCT), triglyceride containing primarily C8 and C10 fatty acids, it were compared to the effects of feeding triglycerides composed of long-chain triglyceride (LCT), corn oil and lard, on the serum enzyme activity. For 4 weeks rats fed a diet containing 20％ MCT or LCT · MCT, as compared with LCT, had the following effects: 1) The total lactic dehydrogenase(LDH) activities in the serum of all experimental group were significantly decreased then those of control group. 2) The activities of glutamic oxaloacetic transaminase (GOT) in the serum of all experimental group were decreased than those of control group. 3) The activities of glutamic pyruvic transaminase (GPT) in the serum of all experimental group were decreased, MCT and LCT group were singinficantly decreased than of control group. 4) The activities of α-amylase in the serum of all groups were significantly increased than those of control group. 5) According to electrophoresis, LDH of LDH isoezyme activities in MCT and Lard group were increased with those of LDH5 in corn oil group were increased than those of control gourp. It is suggested that the MCT and LCT fed to rats influence on the activity of various serum enzymes.

Because of its more complete hydrolysis and rapid absorption, MCT is expected its usefulness in the diets of patients with malabsorption syndrom. Also, several authors reported that serum cholesterol level was lower after MCT feedings. In this study, rate of each experimental group were fed for 4weeks with 20％ MCT, 20％ corn oil, mixed diet of 10％ MCT and 10％ corn oil, mixed diet of 17％ corn oil and 3％ shortening. After experimental diet, it was measured to growth rate and serum cholesterol, triglyceride and phospholipid level. The results were as follows; 1. The body weight gain was the lowest in MCT group and others were lower than control group. 2. Serum total cholesterol level was the lowest in corn oil group and others were significantly lower than control group. Free cholesterol level was lower in all experimental groups than control group too. 3. Serum HDL-cholesterol level was significantly higher in all experimental groups than control group. 4. The ratio of VLDL, LDL-Cholesterol to HDL-Cholesterol was significantly lower in all experimental groups than control group. 5. Serum triglyceride level was higher in all experimental groups than control group. Serum phospholipid level was significantly in only mixed diet group of corn oil and shortening than control group. 6. The ratio of total cholesterol to phospholipid was significantly lower in corn oil diet group than control group.

The purpose of the study was to find an effect of Medium Chain Triglycerids (MCT) diet on cholesterol metabolism in rat. Sprague-Dawley rats were fed two different diets containing MCT(trioctanoate) and corn oil respectively. After feeding to each group for four weeks, the levels of serum and liver cholesterol, the excretion rates of fecal and biliary steroids, and also bile acid composition were investigated. The results obtained from the study are as follows : (1) The average body weight gain in MCT group was almost same as that in the corn oil group. (2) The concentration of serum cholesterol in MCT group was lower than that in the corn oil group. Therefore it is confirmed that the cholesterol lowing action of MCT diet was practically high. (3) The concentrations of liver cholesterol and Triglyceride in MCT group were almost same as that in the corn oil group. Therefore it is thought that the level of liver lipids was not influenced by the difference of diet in this study. (4) The excretion rate of fecal neutral steroid in MCT group was significantly lower than that in the corn oil group, while the rate of fecal bile acid excretion was about same in both MCT and corn oil group. (5) The composition rates of fecal bile acid such as cholic acid, chenodeoxycholic acid and deoxycholic acid, a secondary acid of cholic acid, in MCT group were significantly lower than that in the corn oil group. (6) The excretion rates of biliary cholesterol and bile acid in MCT group were significantly higher than that in the corn oil group, while the composition rates of biliary bile acid such as chenoddeoxycholic acid and deoxycholic acid in MCT group were significantly higher than that in the corn oil group.

The purpose of the study was to find an effect of medium chain triglyceride (MCT)diet on the serum lipids and lipoprotein of Sprague-Dawley rats when the were fed with cholesterol. All experiment-groups were fed with different diet such as soybean oil, shortening,MCT and MCT mixed with oil respectively. After fed to each group, the levels of serum lipids and lipoprotein among fed rats were examined and the data from the experiment were compared with a control group. The results obtained from the study are as follows : (1) The average boby weight gain in MCT diet and soybean oil diet groups were lighter than that of the control group, while the food efficiency ratio in each experimental diet group was almost same as than in the control group. (2) Total cholesterol levels in serum of all experimental diet groups were lower than that of the control group except the level in shortening diet group. Especially, the levels of total cholesterol in MCT diet and soybean oil diet groups were significantly lower than that of the control group. (3) VLDL, LDL-cholesterol levels of all experimental groups were almost same except the case of the MCT diet and soybean oil diet group which was significantly low. (4) The ratio of VLDL, LDL-cholesterol to HDL-cholesterol, so called, atherogenic index in serum of MCT and soybean oil diet groups were significantly lower than that of the control group. (5) The ratio of total cholesterol to phospholipids in serum of MCT diet group was decreased, because total cholesterol levels were decreased more than phospolipid levels. (6) The ratio of the serum VLDL, LDL to HDL in MCT diet group. in MCT and soybean oil mixed diet group, and in soybean diet group was decreased. In other wards, it means that the decrease of the serum VLDL, LDL in each group and the increase of the serum HDL.