Korean Journal of Community Nutrition

Wha Jin Hyun

7 Articles

[English]
A Study on Knowledge and Control Beliefs Regarding Breastfeeding of University Students by Their General Characteristics and Experienced Education in Breastfeeding: Jo Yoon Lee, Kang Wook Lee, Wha Jin Hyun; Korean J Community Nutr 2013;18(5):457-466. Published online October 31, 2013; DOI: https://doi.org/10.5720/kjcn.2013.18.5.457

This study was conducted to investigate the effect of breastfeeding education experience on knowledge, control beliefs, and future intention toward breastfeeding to consider the needs of breastfeeding education program of university students. The breastfeeding knowledge, control beliefs and related habits of 445 male and female college students were evaluated between September 1, 2011 to April 30, 2012. Data were collected from self-administered questionnaires and analyzed using SPSS for Window V.17.0. chi2-test, t-test and ANOVA were used for the calculation of differences between groups. The percentage of students who intended to breastfeed their baby was 80.7% (male: 73.6%, female: 84.2%). Only 21.6% of students experienced breastfeeding education. Students planned to get information related to breastfeeding from their mothers (32.4%), breastfeeding experts (23.8%) and Medical doctors & nurses (10.6%). breastfeeding education group showed higher knowledge level (14.46 vs 10.56) and control beliefs (3.48 vs 3.16) to breastfeeding than non-education group (p < 0.001). General attitude toward breastfeeding was similar between groups; the specific intention to breastfeed for 6 months was higher in the education group (83.3% vs 58.2%) (p < 0.01). Percentage of students who gave correct answers to knowledge questions related to breastfeeding was also higher in the breastfeeding education group than non-education group (72.3% vs 52.8%). Among 20 questions, only 2 questions showed no significant differences between the groups. These findings suggested that breastfeeding education was effective in encouraging or improving breastfeeding practices.

Citations

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Effects of Educational Intervention about Breastfeeding on University Students' Knowledge and Attitudes toward Breastfeeding: Focusing on Gender Differences
Jo-Yoon Lee
Korean Journal of Community Nutrition.2018; 23(1): 1. CrossRef
Belief factors associated with breastfeeding intentions of single women: Based on the theory of planned behavior
Min Kyung Jang, Seung-Min Lee, Jin Mo Khil
Journal of Nutrition and Health.2017; 50(3): 284. CrossRef

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[English]
Personal Maternal Body Image Perceptions Their Preschool Children: Wha Jin Hyun, Yi Joung Hong; Korean J Community Nutr 2005;10(6):930-942. Published online December 31, 2005

Abstract PDF: This study was performed to investigate body image perceptions of women about themselves and their preschool children and also to investigate the relationship between these perceptions. Subjects were 545 women and their children (279 boys and 268 girls) residing in Daejeon city. 67.7% of women were classified as normal group, 18.6% as overweight group, and 13.8% as underweight group by BMI. 68.5% and 78.7% of their boys and girls, respectively, were classified as normal group, 22.4% and 16.4% as overweight group, 9.1% and 4.9% as underweight group by WLI. Women made relatively accurate judgments on their current body sizes and selected their body images as the most desirable one. But they preferred plumper figures for their children and failed to perceive their overweight children as overweight. While 74.7% of women wished to be thinner, 81.1% of them wished their children to be fatter. Women spending less then 100 thousand won and more than 500 thousand won as monthly food expenses and having only one child perceived their children's current body sizes the lowest and the highest, respectively. Women wished boys to be fatter than girls. Their current body sizes were correlated positively with the children's current body size (p<.01), and their healthiest, attractive, and 'wish' figures were correlated positively with children's current, healthiest, attractive, and 'wish' figures (p<.05 - p<.01). Body size dissatisfaction (wish to be thinner) and BMI of women were correlated negatively with children's healthiest and attractive figures (p<.01). These findings suggest that in order to correct the women's body image misperceptions and to prevent childhood obesity, mother's perception about healthy body images for themselves and their children need to be included in nutrition education. Also, it is necessary to assist mothers to understand the relationship of body size and weight status with the risk of chronic disease which might appear later in their children's life.

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[English]
Seasonal and Regional Variations in Nutrient Intakes of Korean Adolescents as Assessed as 3-Day Dietary Records: Wha Jin Hyun, Joung Won Lee; Korean J Community Nutr 2001;6(4):592-603. Published online October 31, 2001

Abstract PDF: 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/sub 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/sub 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.

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[English]
The Relationship between Obesity, Lifestyle, and Dietary Intake and Serum Lipid Level in Male University Students: Wha Jin Hyun; Korean J Community Nutr 2001;6(2):162-171. Published online May 31, 2001

Abstract PDF: This study was performed to investigate the relationship between obesity, health-related lifestyle, and dietary intake and serum lipid level in 96 male university students. Health-related lifestyle factors were obtained from questionnaires. Dietary intakes were evaluated with one-day 24-hr recall and two-day dietary record. Anthoropometric data were recorded and serum cholesterol and triacylglycerol concentrations were measured. 21.9%, 36.5%, 36.5%, and 6.2% of the subjects had levels beyond the normal range in serum total cholesterol(TC), HDL-cholesterol(HDL-C), LDL-cholesterol(LDL-C), and triacyglycerol respectively, and 57.3% of the subjects had more than one hyperlipidemic factor. TC was correlated positively with BMI(p<0.01), waist length(p<0.05), hip length(p<0.05), and the amount of smoking(p<0.05). HDL-C was correlated negatively with BMI(p<0.05) and hip lenghth(p<0.05). LTD-C was correlated positively with BMI(p<0.01), water length(p<0.05), hip length(p<0.01), and coffee consumption(p<0.05). TG was correlated positively with waist length(p<0.01), waist-to-hip ratio(p<0.05), and amount of smoking(p<0.01) and negatively correlated with frequence of exercise(p<0.05). Among nutrient intakes, only the ratio of protein to energy was correlated negatively with TC(p<0.05). Logistic regression analysis revealed that BMI, waist length, hip length, waist-to-hip ratio, and amount of cigarette smoking were associated with an increased risk of hyper-TC. BMI, waist length, and hip length were associated with an increased risk of hypo-HDL-C. BMI and coffee consumption were associated with an increased risk of hyper-LDL-C. Amount of cigarette smoking was associated with an increased risk of hyper-TG. In conclusion, a high prevalence of hyperlipidemia in subjects was observed. Also obesity, smoking, and coffee consumption were observed to be highly with the risk of hyperlipidemia in subjects. These findings imply that these factors should be primarily considered in planing the nutrition education program for the prevention of cardiovascular disease in male university students.

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[English]
The Effects of Smoking and Alcohol Drinking on Nutritional Status and Eating Habits in Adult Males: Chung Shil Kwak, Joung Won Lee, Wha Jin Hyun; Korean J Community Nutr 2000;5(2):161-171. Published online July 31, 2000

Abstract PDF: The purpose of this study was to investigate the effects of smoking and/or alcohol drinking on the nutrient intake, nutritional status, and eating habits of adult males. The subjects were 157 male adults aged 20-49 living in Daejon. Interviews with questionaire on smoking and alcohol drinking habits and eating habits, anthropometric measurement, biochemical blood test, and dietary assessment by one-day 24 hour recall and two-day diet record were carried out. The subjects were divided into four groups : control (non-smoking and non-drinking), drinking only, smoking only, and the both(drinking and smoking). The average numbers of smoked cigarettes were 17.8/d and 19.1/d in the smoking only group and the both group, respectively. The frequency of alcohol drinking was 8.3 times/month and 11.6 times/month in the drinking only group and the both group, respectively. Height was significantly higher(P 0.05) in the drinking only group than in the none and smoking only groups, while the other anthropometric indices were not different among the four groups. There were positive correlations between smoking and drinking or coffee intake. Alcohol drinking increased eating-out frequency and the intakes of energy, protein, dietary fiber, vitamin A, B1, B/sub 6/, Fe and P, while smoking decreased snack frequency and intakes of energy, protein and vitamin B/sub 6/. Blood pressure was not changed in the smoking only and drinking only groups compared to the none group, while systolic blood pressure was elevated in both group(P 0.05). Alcohol drinking significantly elevated(P 0.05) serum total cholesterol and LDL-cholestrol level, while smoking did not change the serum lipid and cholesterol levels. Hemoglobin nd MCHC levels were significantly elevated(P 0.05) by smoking. From these data, it is suggested that both smoking and drinking have influence on some eating habits and nutrient intakes, and especially alcohol drinking can induce hypercholesterolemia.

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[English]
Energy Value of Breakfast and Its Relation to Total Daily Nutrient Intake and serum Lipid in Korean Urban Adults: Wha Jin Hyun, Joung Won Lee, Chung Sil Kwak, Kyung Hee Song; Korean J Community Nutr 1998;3(3):368-379. Published online August 31, 1998

Abstract PDF: The purpose of this study was to assess the energy value of breakfast and its relation to total daily nutrient intake and serum lipid. Dietary intakes were evaluated through the 3-day dietary recalls(interview for 1day and self-report for 2 days) from 333 Korean urban adults aged 20-49 year. Serum lipids in fasting blood samples were measured form 98 of those 333 adults. Low energy breakfast(<15% of daily energy intake) was consumed by 22.6% of males and 18.5% of females. 59.4 of males and 43.3% of females consumed a breakfast of average energy intake(15-25% daily energy intake) ; and 18.1 of males and 38.2% of females consumed a significant contribution to a total daily nutrient intake. The daily nutrient intake except crude fiber and vitamin A, B, B, and C in males and except vitamin C in females significantly increased as the energy value of breakfast increased. The differences in energy and nutrient intakes at breakfast were not made up for by other meals. To make matters worse, the satisfactory-energy breakfast group took more energy at dinner compared with the low-energy and average-energy breakfast group took more energy at dinner compared with the low-energy and average-energy breakfast groups in females. Among serum lipid parameters, TG was negatively correlated with energy provided at breakfast, and total cholesterol and LDL-cholesterol had a negative correlation with energy and carbohydrates provided at breakfast in males. For females TG was positively correlated with the ratio of carbohydrates to energy at breakfast but negatively correlated with the ratio of fat to energy at breakfast. These results suggest that satisfactory energy intakes at breakfast have positive effects on the adequacy of daily nutrient intake and may positively affect the serum lipid status.

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[English]
Dietary Intakes and Psychological Stress Pregnant Women in Taejon in Relation to Neonatal Birth Weigh: Wha Jin Hyun, Jo yoon Lee, Chung sil Kwak; Korean J Community Nutr 1997;2(2):169-178. Published online May 31, 1997

Abstract PDF: Thin study measured dietary intakes in late pregnancy and psychological stress during the period of gestation and examined the roles of diet and psychological stress in pregnancy weight gain and infant birth weight. Study subjects were 98 pregnant women who delivered infants at 2 general hospitals in Taejon city. Mean weight gain during pregnancy was 14.6+/-4.89Kg. Mean infant birth weight was 3.39+/-0.62kg in males and 3.28+/-0.43Kg in females. Mean energy and protein intake levels were adequate, but mean iron and calcium intakes were only 61.2+/-14.9% and 79.1+/-18.2% of RDA, respectively. Fat intake which constitutes 22.0+/-4.3% of total energy intake, and animal protein intake which constitutes 22.0+/-4.3% of total energy intake, and animal protein intake which constitutes 53.7% of total protein intake were moderately high. Though mean energy, fat, animal protein, and meat protein intakes in the low psychological stress group were higher than those in the middle or high stress group, psychological stress did not significantly affect pregnancy weight gain and infant birth weight. High intakes of nutrients except for dairy protein, iron, and niacin were associated with higher pregnancy weight gain and high intakes of protein and meat protein were associated with higher infant birth weight. It is concluded that dietary intakes during pregnancy has effects on pregnancy weight gain and infant birth weight, and psychological stress has no direct effect on them.

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