Korean Journal of Community Nutrition

[English]
A Study of Obesity Indices of Korean Adolescents and Related Factors: Chung Ja Sung, Myoung Sook Lee, Mi Kyung Sung, Mi Kyeong Choi, Dong Yean Park, Yoon Shin Lee, Mi Hyun Kim; Korean J Community Nutr 2000;5(3):411-418. Published online September 30, 2000

Abstract PDF: The purpose of this study was to investigate the relationship of body mass index with environmental and dietary factors including nutrition knowledge, and nutrition attitude of Korean adolescents. Anthropometric measurements, questionnaire responses, and 24-hour dietary records of 531 elementary, 543 middle, and 533 high school students residing in Seoul and Kyunggi-do were collected. Data was analysed using SAS computer program. The results are as follows. Mean BMI of elementary school boys was higher than that of girls. However, there were no significant differences in mean BMI between sexes both in middle and high school students. Calcium and iron consumption were lowest among elementary and middle school students, respectively when the intake was expressed as a percentage of the Korean RDA. Energy, protein, vitamin A, vitamin B1, vitamin B2, niacin, and vitamin C intakes(% RDA) were lowest among high school students. The factors influencing BMI of elementary students were BMI of the parents in boys, and BMI of the father in girls. In middle school students, energy intake, fathers BMI, mothers nutrition knowledge and students BMI, and nutrition knowledge were related to the obesity indices of boys, while fathers and mothers BMI were related to the mean obesity index of girls. In high school students, nutrition knowledge and mothers nutrition attitude were related to the obesity index of boys, while BMI of parents was related to the obesity index of girls. In conclusion, mothers and fathers BMI were the most common factors influencing the BMI of these adolescents. Although these results can not determine if food behaviour directly affects BMI, it may influence the BMIs of family members, and therefore nutrition education to keep normal weight and desiradle food habits should be emphasized. More systematic studies to investigate the cause-effect relations of these factors are required.

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[English]
A Study on Nutritional Attitude, Food Behavior and Nutritional Status according to Nutrition Knowledge of Korean Middle School Students: Sun Woong Lee, Chung Ja Sung, Ae Jung Kim, Mi Hyun Kim; Korean J Community Nutr 2000;5(3):419-431. Published online September 30, 2000

Abstract PDF: The purpose of this study was to investigate nutrient intake and food behavior according to the nutrition knowledge of middle school students residing in Seoul and Kyunggi-do, Korea. Anthropometric measurements and questionnaires, including 24-hr recall of dietary intake, were collected from 543 male and female middle school students. They were assigned to one of five groups according to their nutrition knowledge : very high group (VHG ; 90 - 100 score), high group (HG ; 80 - 90 score), normal group (NG ; 70 - 80 score), low group (LG ; 60 - 70 score) and very low group (VLG ;< 60 score), and comparisons were made. The mean age of the subjects was 13.7 years old. The mean height, weight, and BMI of male and female students were 161.9 cm, 52.6 kg and 20.2 kg/m2, 157.0 cm, 50.4 kg, and 20.4 kg/m2 respectively. Female students skip breakfast and dinner more frequently than male students do. Male students skipp lunch and eat fast foods more frequently than females do. Protein, calcium, vitamin B1, vitamin B2, niacin, vitamin C, fat, and animal protein intakes in females are shown to be related to their nutrition knowledge. Calcium, protein, animal protein, vitamin B2 and niacin intakes are significantly lower in the VLG than in the others. However, vitamin B1 and vitamin C intakes are significantly lower both in VHG and VLG. Fat intake in VHG is lowest. Nutrition knowledge of male students is correlated with mothers knowledge, nutrition attitude and nutritional status. On the other hand, in female students, nutrient consumption was lowest in subjects whose nutrition knowledge was highest and lowest. Therefore, nutrient consumption is affected by nutrition knowledge. However, in female students, possibly due to wrong information on diet or prejudice and outlook, nutrient consumption was low even when they scored high in nutrition knowledge. In conclusion, nutrition knowledge of male students is affected by the mothers nutritional knowledge and attitude. Therefore, nutrition education for mothers is very important. In male students, as their nutrition knowledge is low, their nutrient consumption is affect. These results indicate nutrition education and correct information for body image, balanced diet, regularity of meals and food selection for middle school students are required at both school and home.

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[English]
Evaluation of Vitamin C Supplementation and Effectiveness of Smoking Cessation Intervention in Adolescent Male Smokers: Jung Hee Kim, Jae Yeon Lim, Hyun Joo Kang, Kyungwon Kim; Korean J Community Nutr 2000;5(3):432-443. Published online September 30, 2000

Abstract PDF: Smoking can increase oxidative stress and thereby change the antioxidant defense system in the body. Supplementation of antioxidant vitamins might improve antioxidant status in the body. The purpose of this study was to evaluate the effectiveness of vitamin C supplementation and smoking cessation education on changes of antioxidant status and psychosocial factors related to smoking. To obtain above purposes, we investigated the effectiveness of intervention for male adolescent smokers were evalnate by assessing changes in dietary intakes, plasma antioxidant vitamin concentration, and psychosocial factors related to smoking after program completion. Subjects, male adolescent smokers, were assigned into four groups : Control group(19 students), Educ. group(19 students), Vit. C supple. group(19 students), and Educ. + Vit. C suppl. group(19 students). The Educ. group and Educ.+Vit. C suppl. group received nutrition and smoking cessation education once a week for 5 weeks. Vit. C suppl. group and Educ.+Vit. C suppl. group received 500 mg per day of ascorbic acid for 35 days. All data were collected before and after intervention. Vit. B2 and Vit. C intakes of all groups were increased, but the only Ca intake was increased in the Educ. group. Plasma Vit. C concentration and Ratio(plasma Vit. C/Vit. C intakes) were increased in the Vit. C suppl. group and Educ.+Vit. C suppl. group, and the Vit. C deficiency status of these groups(Vit. C suppl. group and Educ.+Vit. C suppl. group) disappeared. Showing the effects of Vit. C supplementation, plasma alpha-tocopherol was increased in the Educ. and Educ.+Vit. C suppl. group, and especially high increases were seen in the Educ.+Vit. C suppl. group. Psychosocial factors related to smoking changed after the education a little. This intervention program had an impact on nutrition intakes, plasma antioxidant vitamins, and some beliefs related to smoking in male adolescent students. Various programs of nutrition and smoking cessation education and vitamin supplementation for quitting smoking must be implemented for adolescent smokers, and further studies are needed regarding sorts and amount of antioxidant nutrients and supplementation periods.

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[English]
A Comparative Study of Nutrient Intakes and Health Status with Body Size and Weight Control Experience in Adolescent Females: Ho Kyung Ryu, Jin Sook Yoon; Korean J Community Nutr 2000;5(3):444-451. Published online September 30, 2000

Abstract PDF: This study was conducted to investigate how body size and weight control experience affect the nutrient intakes and the health status of adolescent females. The survey was carried out by self-questionnaires with 463 female high school and college students in Daegu. Analysis of data was done by using a t-test, and ANOVA with the SAS computer program. The average height, weight and BMI of the subjects were 161.2 cm, 53.4 kg, and 20.51 kg/m2 respectively. However, 25.1% of the subjects belonged to the underweight group when we divided the subjects into 3 groups- underweight, normal-weight, overweight-according to their present body size. The average Fe intake of the subjects was less than 50% of the Korean recommended dietary allowances. The dietary intakes of energy and Vit. A were significantly higher in the underweight group than in other groups. However, no significant differences among body size groups were observed in the dietary habit score and the nutritional knowledge score. It also appeared that the dietary habit score and the nutritional knowledge score of the weight control attemptees were worse than those of the non-attemptees. The physical health status of the subjects significantly differed according to weight control experience, and the psychological health status of the subjects differed with present body size. The physical health condition of the weight control attemptees was worse than the non-attemptees. and the psychological health condition of the overweight group was worse than other groups. The results indicated that unnecessary weight control in adolescent females induces unhealthy food behavior which is linked to undesirable health status.

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[English]
Consumption Pattern of Health Food by Adults in Taejon: Nan Sook Koo, Ji Yeun Park; Korean J Community Nutr 2000;5(3):452-460. Published online September 30, 2000

Abstract PDF: Aspects of health food intake were investigated by conducting a questionnaire survey with over 480 of adults in Taejon and the data were analyzed by chi2-test, t-test and ANOVA, using an SAS program. Eighty two percent of the subjects had taken some kind of health food. The health foods they took frequently were, for example, health drinks, green tea, ginseng products, dietary fiber drinks, honey, general tea, vitamin B, vitamin C, and tonic medicines. The main reason for taking health foods was recovery from fatigue and the frequency of taking health foods was one time per day. Most of the subjects took health foods without knowledge of their components or effects. When they health foods with a perceived knowledge of their components and effects, they responded that the health foods were very helpful for them. Twenty percent of subjects experienced side effects, such as diarrhea, stomachache, headache, nettle rash, and stomach cramps. Information on health foods was obtained mainly from friends or family. The user group showed higher intention to continue health food intake than non users(p<0.001). Health foods were taken without any knowledge about them. Health food intake was significantly correlated with consideration of disease, suffering or disease, medical examination, and self-perceived health status, but not with food habits and health food knowledge. As for the results from the adults consumption pattern of health food, an education program should be developed to choose proper health foods according to the consumers dietary life and health conditions. Also a proper guide line should be established to be chosen the authorized health foods.

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[English]
Comparisons of Nutrients Intake of Normocholesterolemia and Hypercholesterolemia in the Postmenopausal Women: Sangyeon Kim, Kyungah Jung, Yoon Jung Choi, Seok Kie Lee, Yukyung Chang; Korean J Community Nutr 2000;5(3):461-474. Published online September 30, 2000

Abstract PDF: The purpose of this study was to explore the difference in nutrient intakes between normocholesterolemia and hypercholesterolemia. The subjects were classified as normocholesterolemia and hypercholesterolemia based on The Guideline for Korean Hyperlipidemia. A semiquantitative food frequency questionnaire was used to measure the dietary intakes of the subjects. The results obtained are summarized as follows. Intakes of nutrients such as energy, carbohydrate, protein, fat, minerals, and antioxidant vitamins were not significantly different between the normocholesterolemia group and hypercholesterolemia group. However, antioxidant vitamins and folate intakes in the hypercholesterolemia group tended to be lower than those in the normocholesterolmia group. Intakes of vitamin A, vitamin E, and Ca in normocholesterolemia was much less than the RDA for those nutrients in normocholesterolemia. Cholesterol intake in the hypercholesterolemia group was significantly higher than that in the normochoesterolemia group. However, mean cholesterol intake(240 mg/day) of the hypercholesterolemia group was much less than that of Americans whose cholesterol intake was 400 - 500 me/day. Fatty acid intakes were not significantly different between normocholesterolemia and hypercholesterolemia groups but the hypercholesterolemia group tended to consume omega3 fatty acids less than the normocholesterolemia group. Out data indicate that cholesterol intake is man important determinant of serum cholesterol levels in postmenopausal women. The results of this study provide information that is important in designing appropriate dietary guidelines for hypercholesterolemia in postmenopausal women.

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[English]
Development of a Simple Screening Test for Identifying Korean Elderly at Risk of Undernutrition: Ki Nam Kim, Taisun Hyun, Joung Won Lee; Korean J Community Nutr 2000;5(3):475-483. Published online September 30, 2000

Abstract PDF: The develop a simple screening test for identifying Korean elderly at risk of undernutrition, the data of the health-related habits, dietary behaviors and nutrient intakes of the elderly in Chongju were analyzed. Two risk indicators, mean adequacy ratio (MAR) and the respondents perceived health, were used to detect the undernutrition risk of the elderly. In order to select a list of questions for the test, factors a affecting nutritional status and items investigated in previous nutrition surveys of the elderly were considered, and 21 questions were primarily selected. A multiple regression and stepwise regression analysis were used to take out the weak predictors of poor nutrient intake, and to give item weights to the strong predictors, and a list of 17 questions was finally adopted. To determine the cut-point of the test score, sensitivity, and positive predictive values were calculated. The Simple Screening Test developed in this study is a brief, easily scored tool to predict poor nutrient intake and the perceived health status of the elderly. The test may provide a basis of further comprehensive nutritional assessment or intervention planning, if necessary, for those who are diagnosed ad "high risk". The test, however, needs to be independently validated by other groups of individuals.

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[English]
Zinc Status and Taste Acuity of Old and Young Women: Jin Sook Yoon, Junghyun Lee, Phil Sook Park; Korean J Community Nutr 2000;5(3):484-492. Published online September 30, 2000

Abstract PDF: In an attempt to figure out the relationship between zinc status and taste acuity of old and young women, dietary zinc intake, urinary zinc excretion, and taste acuity were determined for 118 women. Zinc intake was measured by 2-day food records and food frequency method. Urinary zinc excretion was measured from urine samples collected for twenty four hours. Body fat, lean body mass (LBM), and total body water were measured by bio-impedence. Average dietary zinc intake by food record was 4.15+/-1.33mg (=35% if Korean RDA) for the old women and 5.41+/-2.76mg (=25% of RDA) for young women. When zinc intake was measured by a frequency method, the average intakes of the old and young women were 3.5+/-1.7mg 4.5+/-1.9mg, respectively. It appears that dietary zinc intake of young women was significantly higher than that of the old women. Average urinary zinc excretion of the subjects was 0.27+/-0.16mg in the elderly and 0.24+/-0.13mg in young women, which indicated a marginal zinc status. However, zinc status was not significantly different between old and young women. Correlation analysis indicated that zinc intake and urinary zinc excretion were positively related to BMI and LBM in young women. The old women (m=49) showed significantly higher taste detection thresholds than young subjects (n=47) for both sweet and salty tastes. Recognition thresholds for sodium chloride and sucrose were not significantly different between old and young women. The lower the taste thresholds for salty taste, the higher the average dietary zinc intake. However, taste perception concentration was not related to the urinary zinc excretion level.

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[English]
Nutritional Status of Iron of Elderly in Jeon-Ju Area: Eun Jung Joo, In Sook Kim, Eun A Seo; Korean J Community Nutr 2000;5(3):493-501. Published online September 30, 2000

Abstract PDF: The purpose of this study was to assess the nutritional status of iron of the elderly residing in the Jeonju area. The anthropometric parameters, nutrient intake and biochemical status of iron, were measured for 60 Korean elderly(23 elderly men and 37 elderly women aged 60 - 79 years old). The level of hemoglobin(Hb), hematocrint(Hct), serum iron(Fe), total iron binding capacity(TIBC) and serum ferritin(Ferritin) were measured and transferrin saturation(TFsaturation) was calculated. Mean values of Hb, Hct, Fe, TIBC, TFsaturation and Ferritin were 14.49+/-0.93g/dl, 42.47+/-2.59%, 125.48+/-52,.46 microgram/dl, 338.13+/-45.92 microgram/dl, 193.00+/-125.03 microgram/l in elderly men and 12.82+/-0.99 microgram/dl, 37.66+/-2.90%, 100.08+/-42.82 microgram/dl, 356.41+/-54.65 microgram/dl, and 99.35+/-117.22 microgram/l in elderly women, respectively. Prevalence of iron deficiency varied greatly with biochemical indices of iron. It was 13.0% when judged by Fe(60 microgram/dl) and TFsaturation(15%) whereas 34.78% by Hct(41%) in elderly men. However 13.5% of the elderly women showed iron depletion(Ferritin<20 microgram/l) and 43.2% showed suppressed erythropoiesis with iron deficiency(TIBC>360 microgram/dl). The anemic subjects assessed with TFsaturation(<15%) represented 13.5% of the elderly women, whereas 18.9% of the subjects possessed less than 12g/dl of Hb. The Hb concentration was positively correlated with Hct(r=0.980, p<0.001), Fe(r=0.384, p<0.01) and TFsaturation(r=0.349, p<0.01). On the other hand, Ferritin concentration showed a significantly negative correlation with TIBC(r=0.349, p<0.05) and a positive correlation with TFsaturation(r=0.362, p<0.01). Major food groups of iron intake in the elderly were vegetables, cereals, and fish. The mean daily intake of iron was not significantly different between elderly men and women(12.82mg vs 10.35mg). Intake of heme iron however, was significantly higher(p<0.01) in elderly men(1.03mg) than women(0.42mg). Total absorbable iron caculated by the method of Monsen was 0.55mg, 0.40mg in elderly men and women, respectively and bioavailability of dietary iron 4.29% and 3.87%.

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[English]
Determining Obesity Frequency of Rural Children by Skinfold Thickness, Analyzing Their KAP Related ti Obesity and Obesity Camp Strategy: Young Sook Park, Hae Ja Chun, Byong Kook Song; Korean J Community Nutr 2000;5(3):502-512. Published online September 30, 2000

Abstract PDF: A survey was conducted on 222 students in two elementary schools in rural areas, one was a rural small city and the other was in the countryside. By measuring their skin-foldness in 4 spots by caliper, the body fatness of 5 grades(BFGr) of the subjects was resulted as follows ; 28.0% of boys and 6.7% of girls were classified as obese the and 34.1% of boys and 31.1% of girls as overweight. Comparing by region, children in the small city seemed to be fatter than the ones in the countryside(21.7% vs. 17.2% as obesity). Comparing by gender, boys were fatter than girls(28.0% vs. 6.7% as obesity). When recategorizing body fatness from 5 grades(BFGr) into 3 groups(BFGp) as overweight group(obesity+overweight), normal and underweight group(underweight+severe-underweight), we observed no significant difference in childrens dietary habits and food intake frequencies by BFGp. Overweight and underweight groups enjoyed snacking before dinner more frequently than the normal group(42.1-59.3% vs. 31.5%). The subjects showed poor nutrition knowledge score with relatively high attitude score about weight control and dietary behavior score was a little lower than the attitude score. Nutrition education programs, like camps, should stress on childrens nutrition knowledge. BFGp related to obesity attitude positive, a very low level and the latter related to diet, exercise and fasting attitudes at positive levels. Therefore overweight children seemed to be motivated easily. Also the higher the in exercise-value score, the more increased was shown in exercise attitude at positive, very low level. Emphasizing exercise-value in camp programs might make childrens exercise attitude more positive. As strategies for a rural obesity camp program are being developed by obese and non-obese children. The camp would be held over summer vacation for 3 days(2 nights) at the participants expence not exceeding 50,000 won. Contents of the program cover nutrition knowledge, and exercise-value as well as cooking lessons, exercise practice, and self-esteem enhencement.

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[English]
Effect of Nutrition Education Program on Nutrition Knowledge, Dietary Diversity of Elementary School Children: Hyun Sook Yoon, Hal La Yang, Eun Sil Her; Korean J Community Nutr 2000;5(3):513-521. Published online September 30, 2000

Abstract PDF: The purpose of this study was to promote health for elementary school children. It was conducted with a 7 week program focused on the teaching of the food tower and evaluation of its educational effects. Subjects consisted of 75 boys and girls (control group : 37, treatment group : 38) in the 4th grade of elementary school. The results showed as follows. The proportion of boys was a little higher than that of girls. Of their mothers age, the thirties and forties were 66.7% and 33.3%, respectively. 61.3% of mothers had jobs and 86.7% of mothers prepared meals. The average of the anthropometric data of the 2 groups show were all in the normal range. The degree of nutritional knowledge in treatment group after education was significantly increased in all concepts, however, the degree of the control group appeared to show significant increase in only two concepts, such as "snack" and "one-sided diet". The diversity of dietary intake was investigated to evaluate the educational effect using food picture cards. The treatment group showed significant increase in all food groups except "cooked rice", "potatoes" and "fruits", but the control group showed no significant change. The level of nutrition knowledge has a significant correlation with the diversity of the food intake in the treatment group. The preferred lesson for children were "games", "doll playing" and "role playing". The impressive lesson contents were "diverse food intake without one-sided diet", "eating breakfast everyday", "choosing good snacks for health" and "eating less procesed food". These findings indicate that a well-designed program for nutrition education can help to change food habits, and that childrens education helps them to grow and to live as healthy adults. The performance of an educational program for preventive nutrition is more beneficial for children than for the adults based on the cost reduction and effect of this education.

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[English]
A Survey of the Customer Satisfaction of Military Foodservice for their Improvement: Hye Sang Lee, Young Soon Han, Jae Man Lee; Korean J Community Nutr 2000;5(3):522-528. Published online September 30, 2000

Abstract PDF: The purpose of this study was to provide basic reference materials for improving the quality of the military foodservice so that they can satisfy the customers needs. The questionnaires employed in this study were developed based on the IPA(Importance Performance Analysis). The questionnaires for the military customers(Group A which is the smaller size then Group B which is larger in size ; a criteria for the classification is the number of soldiers served in the foodservice facilities) consist of demographic variables, concerns about the military foodservice, and service practices. A total of 656 military customers answered the questionnaires. A statistical data analysis was conducted using the SPSS/win package program for descriptive analysis, a chi2-test and t-test. The results of this study could be summarized as follows : The IPA in case of Group A showed the following attributes in Quadrant A("focus here") : (1) availability of the meals that the customers prefer, (4) taste of the food, (16) cooking methods that the customers prefer, (17) the overall quality of the breakfast. The IPA in case of Group B showed the following attributes in Quadrant A("focus here") : (11) cleanliness, (12) kindness of the foodservice personnel, (15) the overall quality of the service, (17) the overall quality of the breakfast. The opinion of the Group A on the improvement of military foodservice was significantly different from that of Group B in the areas of meals/service improvement, problems in military foodservice, improvement in service methods, etc.(p<0.05).

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[English]
Comparision of Priorities in Health Center Nutrition Service Needs between Provider and Consumer: Kyunghee Jang, Youngok Kim; Korean J Community Nutr 2000;5(3):529-536. Published online September 30, 2000

Abstract PDF: The major purpose of this study was to identify the differences in priorities of nutrition service needs between the service provider and consumers (general population). Identification of the personal characteristics which influence the priorities of nutrition service needs among the general population was also examined. An interview survey using a questionnaire was conducted to collect the data required for analysis. The questionnaire included the priorities of various nutrition service needs as well as the personal characteristics of the study subjects. The study subjects were 300 residents over 40 years of age, and 15 health workers representing health center service personnel in Kyounggi province. Wilcoxon Rank Sums test were adopted to analize the differences in priority between the service providers and consumers. The results showed that priority of nutrition service needs for provider were significantly different from that of consumer. Gender, age, family type, and education levels of the population were the significant factors affecting the differences in priorities for nutrition service needs among consumers (general population). Out of the results, it could be suggested that consumers need should be considered in developing nutrition services to promote nutrition services utilization in health centers. The results may also suggest that one of the causes for the low utilization rate of nutrition services in health centers was the provider oriented program development regardless of the needs of consumers.

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[Korean]
1998년도 국민건강.영양조사 -건강조사부문-: Korean J Community Nutr 2000;5(3):537-548.

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[Korean]
1998년도 국민건강.영양조사 -영양조사부문-: Korean J Community Nutr 2000;5(3):549-553.

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