• Korean Journal of Community Nutrition
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• v.6 no.4
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• pp.592-603
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• 2001

Seasonal variations of nutrient intake ware evaluated through a 3-day dietary records in 196 Korean adolescents(86 males, 108 females) aged 13 - 15 years and living in urban and rural areas of Chungnam. The seasonal differences of nutrient intake were tested by repealed measure ANOVA. Comparing nutrient intakes among flour seasons using repealed measure ANOVA, mean values of daily intakes were higher in winter and autumn for most nutrients, and were the lowest in summer in the urban areas and in spring in rural areas. Girls recieved the largest amount of nutrients, except Ca and vitamin $B_12$, in winter and the lowest amount in summer, while in boys significant differences were not observed among the four seasons for meet nutrients, except fats, Mg, and vitamin E. Interestingly, the seasonal differences for many nutrients were more evident in rural areas than in urban areas. Vitamin A intake in urban areas was higher in winter and spring, while in rural oreas, in summer. Mean values of daily intakes as a percent of the RDA throughout the year in boys and girls ware 82.2% and 84.2% for energy and 88.9% and 82.7% for protein, respectively. Ca and vitamin A intakes were as low as 32.4% and 24.2% of the RDA in boys and 39.7% and 30.6% in girls. Intakes of Fe, Zn, folic acid and vitamin B$_{12}$ ranged from 40 - 60% of the RDA. The nutrients which showed the largest seasonal difference in the percent of RDA were vitamin E in boys and vitamin C, vitamin E, and Fe in girls. The index of nutritional quality(INQ) for Fe was significantly lower in autumn in both genders. The INQ for vitamin C in girls of both areas was much higher in winter. Annual mean adequacy ratio(MAR), an index of overall nutritional quality, ranged from 0.57 - 0.69, which was higher in winter than in other seasons. Conclusively, nutrient intakes of Korean adolescents showed seasonal variations, particularly in girls and in rural area. Thus, seasonal variations should be considered in the assessing nutritional status, particularly ill the rural areas of Korea.a.

• Journal of Nutrition and Health
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• v.37 no.7
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• pp.585-587
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• 2004

• Journal of Nutrition and Health
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• v.23 no.3
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• pp.187-196
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• 1990

• Korean Journal of Community Nutrition
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• v.4 no.2
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• pp.166-174
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• 1999

We examined the obesity levels and dietary habits of 323 college students taking the course 'Health and Diet' as a part of their nutritional education. The average percentages of body fat, BMI and RBW for subjects in this study were 16.7%, $21.5kg/m^2$ and -1.2% in male students and 27.3%, $21.2kg/m^2$ and 1.0% in female students, respectively. BMI and RBW indicated fewer cases of obesity among female students than BIA did. The average intake of energy by subjects was lower than the RDA of energy. In particular, the average intakes of calcium, iron, and vitamin A by female students were much lower than the RDA of energy. In particular, the average intakes of calcium, iron, and vitamin A by female students were much lower than the RDAs of each of those nutrients. The percent RDAs of nutrient intakes of energy, protein, thiamin, and riboflavin were lower in under weight students than in students of normal and over-weight. Female students were found to skip meals and consume sweet foods more frequently than male students. The obesity levels of students related to the number of meals eaten per day as well as the frequency of consuming sweet foods. Although, it was not possible to determine statistically, the levels obesity also seemed to correspond to the speed at which meals were eaten as well as the frequency of eating salty foods. These results suggest that in order to assess obesity properly, more research that focuses on subjects' gender should be conducted. In addition, nutritional education should emphasize the importance of intakes of energy and phosphorus for male students, and the danger of iron and calcium deficiencies for female students. We should also educate students about dietary habits which contribute to obesity such as overeating and the intake of sweet foods.

• Journal of Nutrition and Health
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• v.29 no.10
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• pp.1112-1120
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• 1996

This study was carried out to estimate the relationship between dietary intakes, blood levels, and urinary excretions of zine, copper, and iron and serum lipids in 30 healthy adults living in Korean rural area. Analyses for the nutritional status of the subjects were performed by 3-day intake recored, duplicated diet collections, 24-hour urine collection, and venous blood sampling before measuring of blood pressure. The daily intakes of zinc, copper, and iron estimated for 3 days were 8.2mg, 3.0mg, and 12.7mg in men and 8.4mg, 3.7mg, and 12.3mg in women, respectively. The serum contents of cholesterol, triglyceride, and HDL-cholesterol were 165.9mg/dl, 119.4mg/dl, and 43.7mg/dl in men and 154.1mg/dl, 88.2mg/dl, and 47.1mg/dl in women, respectively. The serum levels of zine, copper, and iron were 146.0ug/dl, 120.3ug/dl, and 131.1ug/dl in men and 140.6ug/dl, 117.3ug/dl, and 112.2ug/dl in women, respectively. In the relation between dietary intakes, serum levels, and urinary excretions of these minerals, there were significantly positive correlation between zine intake and copper intake(p<0.05), copper intake and urinary excretion(p<0.001), and iron intake and serum zine level(p<0.05). In the relation between these minerals and serum lipids, dietary zine showed positive correlation with triglyceride(p<0.05), and serum zine/copper ratio showed negative correlation with HDL-cholesterol (p<0.05).

• Nutrition Research and Practice
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• v.1 no.4
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• pp.305-312
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• 2007

A group of 101 women, aged 40-65 years consisted of 48 premenopausal subjects and 53 postmenopausal ones living in Daegu and Gyeongbuk area in Korea were evaluated with their general characteristics, lifestyle factors, nutrient and phytoestrogen intakes, blood and urinary indices concerning antioxidant status and bone metabolism. Body mass index (BMI), waist hip ratio (WHR) and systolic blood pressure (SBP) of the postmenopausal women were significantly higher (23.8, 0.86, and 126.9 mmHg, respectively) than those of the premenopausal women (22.6, 0.82, and 115.9 mmHg; respectively). Nutrient intakes of the postmenopausal and premenopausal groups were not different except lower fat intake and higher dietary fiber and iron intakes in the postmenopausal group. Daily total phytoestrogen intake was significantly higher in the postmenopausal group (48.54 mg) than the premenopausal (31.41 mg) and was resulted mostly from higher intakes of daidzein and genistein from soy and soy products (45.42 mg vs 28.91 mg). Serum genistein level and excretion of enterolactone, major lignan metabolite, were not very different between the two groups. Serum retinal and ${\alpha}$- tocopherol levels were higher in the postmenopausal group but TBARS levels were not different between the two groups. Serum osteocalcin (7.18 ng/mL) and urinary deoxypyridinoline (7.15 nmol/mmol creatinine), in the postmenopausal group were significantly higher than those in the premenopausal group (4.80 ng/mL, 5.95 nmol/mmol creatinine). Urinary excretion of enterolactone was positively correlated with serum osetocalcin in premenopausal women and serum genistein negatively correlated with the urinary DPD in postmenopausal women. Dietary phytoestrogen intake was negatively correlated with serum level of TBARS in all subjects. It is concluded that the effect of total phytoestrogen intake is beneficial on body antioxidant status in all middle-aged women regardless of menopause but the effect on bone metabolism appears different by the type of the phytoestrogen and the menopausal state.

• Journal of Nutrition and Health
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• v.42 no.3
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• pp.221-233
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• 2009

Korea's aging population has been remarkably increased. They want to have not only extension of life expectancy but also improving quality of life. To maintain the quality of life, it is essential to have good nutrition. However, nutritional status of elderly in Korea has problems qualitatively and quantitatively. Risk factors for poor nutrition are advanced age, woman, living alone and low economic status. Another risk factor in rural area is season because seasonal changes can affect food intake of elderly. Thus this study surveyed the health status and dietary intakes of elderly by season in rural area. In this study, the elderly were grouped as group 1 {elderly who have one risk factor for chronic diseases (obesity, hypertension, dyslipidemia, diabetes)} and group 2 (elderly who have more than 2 risk factors). Can-Pro 3.0 was used for dietary data analysis and SPSS 12.0 program was used for statistical analysis. Obesity had the highest percentage 62%, followed by hypertension 59.5%, dyslipidemia 21.5% and diabetes 11.6%. Obesity, hypertension, and dyslipidemia were high in winter and WHR, diabetes and anemia were high in summer. Mean intakes of energy and nutrients were less than RI. Nutrients which were changed most by season were vitamin A and Vitamin C. Intakes of calcium and folic acid were less than recommended in summer. The ratio of CPF for carbohydrate was higher and fat was lower than recommended. In conclusion, the nutrient intake of Group 2 was better in quality but Group 1 was better in quantity. Nutrient intakes were poor in summer. In rural area, more careful nutritional assesment and management are needed for aged population, especially in summer.

• Journal of the Korean Home Economics Association
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• v.39 no.10
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• pp.111-124
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• 2001

The relation between dietary behavior and fast food consumption was investigated among 117 male and 164 female students at a high school in Seoul. The main reason for eating fast foods was convenience. In addition, they used fast food chain stores as a get together place with friends. They enjoyed taste of fast foods as well as the atmosphere of stores but they regarded fast foods somewhat expensive for high school students. Among them, 30.1% of the female students had irregular meals and they ate more irregularly than males. More students took too much or too little amount(45.3% of male, 52.5% of female students) than those who took adequate amount. They skipped breakfast the most frequently because they are in a hurry. Most students took snacks once a day and they considered taste of snacks was more important than nutrition or price. They consumed less calorie, calcium, iron, and riboflavin than RDA. Mean caloric intakes of males and females were 79.0% and 97.1% of RDA, respectively. Mean calcium and iron intakes were less than 70% of RDA. Among many factors that may influence nutrient intake, anthropometric indices turned out to be the most influential. Body weight showed significantly positive correlation with caloric, protein, thiamin, and ascorbic acid intakes in male students where both height and weight showed positive relation with calorie, protein, and iron intakes in females. Therefore, this study suggested that fast food stores should make efforts to provide more foods and beverages which are supplemented with calcium and iron. Also, better nutrition education programs should be established to improve high school students dietary habit to complement these nutrients.

• Journal of Nutrition and Health
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• v.39 no.1
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• pp.50-57
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• 2006

The aim of this study was to evaluate the food and nutrient intakes in 5th to 8th grade school boys and girls. A total of 1,333 students were recruited from 1 elementary and 1 middle school, both located in Seoul. The data on food and nutrients intake were collected by 3-day food record. The food intake was calculated as the percentage of total energy intake according to 21 food subgroups. The consumption of noodles, and meat's products (including ham and sausage) groups were higher in 7th and 8th grade than 5th and 6th grade. On the other hand consumption of vegetables and milk & its products groups were lower in 7th and 8th grade. As results, calcium, riboflavin, and vitamin C intakes were lower in 7th and 8th grade students. Dietary patterns by cluster analysis resulted in $77\%$ of subjects with traditional pattern based rice and kimchi, and $23\%$ with modified pattern. All students regardless of grades showed high fat intake, above 20 percent energy intake from fat, and high cholesterol intakes. In conclusion, there was significant difference between 5th and 6th grade primary school students and 7th and 8th junior school students regarding food and nutrient intakes; It should be necessary to provide proper nutrient education and monitoring in order to establish good dietary profile.

• Korean Journal of Community Nutrition
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• v.6 no.5
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• pp.819-829
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• 2001

The purpose of this study was to investigate the difference of general characteristics, menopause status, dietary patterns and nutrient intakes between women aged from 30 to 65 years old with a hypercholesterolemia group and normocholesterolemia group. The subjects were classified as belonging to the hypercholesterolemia group or normocholesterolemia group barred on The Guidelines for Korean Hyperlipidemia. Dietary intakes of fatty acids were measured by means of a 24-hr recall method with food models and measuring tools. We analyzed both data sets together using analysis of variance chi-square test and student's t-test(SPSS for WINDOWS, version 7.5). Significance was defied as a p value < 0.05. The results obtained are summarized as follows. Mean age and BMI of the hypercholesteroemia group were significantly higher than those of the normocholesterolemia group. Intakes of cereal, vegetables, mushrooms and sea food in the normocholesterolemia group were significantly higher than those in the hypercholesterolemia group. Most of the nutrient intakes were not significantly different between the normocholesterolemia group and the hypercholesterolemia group. However, vitamin E intake of the normocholesterolemia group was significantly higher than that of the hypercholesterolemia group. There was a significant negative correlation between vitamin E intake and serum TC(r = -.363, p < 0.001) and LDL-C(r = -.359, p < 0.001). In addition, Serum TG had significantly correlation with carbohydrate(r = 0.137, p < 0.001) and vitamin E intake(r = -0.134, p < 0.001). Therefore, women who suffered from hypercholesterolemia were recommended to control body weight, and to consume foods containing high vitamin E and foods containing high dietary fiber such as vegetables, mushrooms, and sea food.