• Nutrition Research and Practice
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• v.10 no.3
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• pp.294-304
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• 2016

BACKGROUND/OBJECTIVES: Eating out has been reported to have negative effects on nutritional status. However, eating out can include meals prepared at home and eaten outside. Conversely, meals eaten at home can be brought from outside, as take-out and home deliveries have become common in Korea. Thus, we tested whether or not meal preparation location influences daily diet quality. SUBJECTS/METHODS: From the Korea National Health and Nutrition Examination Survey (KNHANES) 2007-2009, 4,915 Korean adults (20-64 years) were classified into two groups: home-made meal group (HMG), who ate ${\geq}2$ meals per day prepared at home (n = 4,146), and non-home-made meal group (NHMG), who ate ${\geq}2$ meals per day prepared outside home (n = 769). Daily diet quality was determined by energy intake, nutrient intake, Dietary Variety Score (DVS), and Diet Diversity Score (DDS). RESULTS: Compared to the HMG, the NHMG was more likely to consist of men, single, employed, educated and of a higher economic status (all, P < 0.01). The NHMG showed higher energy intakes (1,776 vs. 2,116 kcal/day) with higher percentages of energy from protein (15 vs. 23%) and fat (14 vs. 16%) and lower intakes of dietary fiber, phosphorus, potassium, niacin, and vitamin C (all, P < 0.01) than the HMG, with some variations among age groups. The NHMG tended to consume foods prepared by frying and grilling and had more one-dish meals such as bibimbap, noodles, and dumplings but also showed higher dietary diversity. CONCLUSIONS: It should be noted that home-made meals do not necessarily guarantee a healthy diet, and the effects of meal preparation location on nutritional status might vary depending on socio-demographic characteristics.

• Journal of Korean Society of Transportation
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• v.25 no.1 s.94
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• pp.73-79
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• 2007

This study deals with traffic accidents at the ramps of trumpet interchanges. The purpose of the study is to analyze the relations between tke turning direction of ramps (and combinations with other factors) and traffic accidents. In Pursuing this analysis, this study gives particular attention to the combination of turning direction and grade and the combination of turning direction and radius of curvature in the case of the trumpet interchange ramps. The null hypothesis tests show that the average accident number and average accident rate ate rejected at the 90% and 95% significance level respectively Also. the null hypothesis tests show that the combinations or turning direction and Evade as well as turning direction and radius are all rejected at the 95% significance level. In summary, right turn movements ate more dangerous than left turns on the trumpet interchange vamps. Also, ramps with a right turn and up grade or with a left turn and radius more than 200m have more traffic accident Potential than other types of ramps.

• The Korean Journal of Food And Nutrition
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• v.33 no.3
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• pp.237-250
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• 2020

In this study, the Korea National Health and Nutrition Examination Survey in 2016 examined the nutrient and food intake of women in their 20s and 30s according to the number of meals a day, and the results were as follows: The study included 256 women in their 20s and 474 women in their 30s. Women in their 20s and 30s ate two meals a day, indicating that the notion of three meals a day was gradually changing to two to three meals a day. Those in their 20s and 30s who eat one, two or three meals a day were consuming less than the estimated energy requirement of the DRI for Koreans 2015. The vitamin A and C were eating less than the recommended intake in all meals. In the case of minerals, calcium was taken less than the recommended intake in all meals, but sodium was taken above the goal intake in all groups. Women in their 20s and 30s must reduce their intake of saturated fatty acids and sodium, and increase their intake of vitamins A, C, calcium, and potassium. Women in their 20s and 30s drank a lot of coffee, ate baechu-kimchi and rice frequently per week.

• Korean Journal of Community Nutrition
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• v.12 no.5
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• pp.639-645
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• 2007

Using the diet rice bowl, this study examined whether visual cues related to portion size can influence intake volume without altering satiation. 24 subjects ate lunch and subsequent dinner meal in the lab once a week for 2 weeks. Each week at noon, they were served one of two different sizes of a rice (150 g of rice by the diet rice bowl and 210 g of rice by the general rice bowl) but recognized the same volume of which they could eat as much as they wanted of side dishes. Subjects returned to the lab five hours later for a standard dinner, which was consumed ad libitum. Results showed that the subjects who were eating from the diet rice bowl ate less rice (222.4 Kcal vs 306.5 Kcal, p < 0.001) and total energy intake (412.5 Kcal vs 499.2 Kcal, p < 0.001) than those eating from a general rice bowl at lunch. However, despite consuming 21% less energy intake at lunch, the rates of satiety were not significantly different after eating from the diet rice bowl and from the general diet bowl. And there were no significant difference in rice intake and energy intake at dinner between the diet rice bowl and the general rice bowl. These results suggest decreasing the portion size by the diet rice bowl with biased visual cues leads to decreased rice intake and energy intake without altering the satiation. This is, the decreased amount of rice in a diet rice bowl may implicitly suggest what might be construed as an appropriate amount to consume and eventually it suggests smaller consumption norms.

• Journal of the Korean Society of Food Culture
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• v.29 no.5
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• pp.464-475
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• 2014

Eating breakfast provides crucial nutrition for brain function and helps promote overall health. It is especially critical in growing adolescents, as it is known to form good eating habits and better study habits. This study investigated the effects of skipping breakfast on nutritional state, fatigue level, and attention level. A cross-sectional study was conducted in 2010 on total of 828 adolescents composed of 414 boys and 414 girls. Students who ate breakfast never to twice per week were placed in the breakfast-skipper group while students who ate breakfast more than five times per week were included in the breakfast-eater group. Students performed a self-reported questionnaire on food behaviors, amount of food consumption, fatigue level, attention deficient hyperactivity disease (ADHD) level by Conners-Wells' Adolescent Self-Report Scales, depression scale, and self-esteem level. Statistical analysis was conducted using the SAS program (version 9.1). A total of 135 boys (32.6%) and 138 girls (33.3%) were included in the breakfast-skipper group, whereas 241 boys (58.2%) and 223 girls (53.9%) were included in the breakfast-eater group. The breakfast-skipper group showed irregular food behaviors and lacked nutrients. Specifically, energy (p< .001), protein (p< .001), dietary fiber (p< .001), calcium (p< .01), vitamin A (p< .01), thiamin (p< .05), niacin (p< .001) levels in boy breakfast-skippers were statistically lower compared to boy breakfast-eaters. Intakes of all nutrients except fat in girl breakfast-skippers were statistically lower than in girl breakfast-eaters. Girl breakfast-skippers (41.3%) showed significantly higher fatigue risks compared to girl breakfast-eaters (21.5%). Low attention level was also observed only in girls in the breakfast-skipping group. Moreover, students in the breakfast-skipper group showed higher scores for depression and low self-esteem (p< .001). In conclusion, skipping breakfast has effects on young adolescents' nutrition, manifesting as high fatigue level and low attention level, especially in girls.

• Journal of the Korean Dietetic Association
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• v.18 no.3
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• pp.234-247
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• 2012

The purpose of this study was to investigate the consumption and perception of high caloric-low nutrient dense foods in middle school students in the Daegu. Among 550 questionnaires distributed to students in Daegu, 528 (256 boys and 272 girls) were analyzed. A little higher than 80% of students ate snacks everyday, and 43.4%, 29.0%, and 8.1% ate snacks once, twice, and three times or more per day, respectively. Snacks and foods most frequently consumed were ice cream, fried noodles, drinks, cookies, and baked goods. Energy supply from snacks was 104.8~356.9 Kcal/intake while that from meal substitution foods was 520.7~980 Kcal/intake. Students' knowledge score of high caloric-low nutrient dense foods was $6.51{\pm}3.02$ out of 10 points. Sixty percent of students did not read nutrition labels, but 67.9% of them thought that they need nutrition education by nutrition teachers. Students recognized the criteria of high caloric-low nutrient dense foods as well as proper food selection for essential educational items, It was concluded that effective education should be implemented in middle schools by nutrition teachers for students to develop good habits in selecting snacks and foods.

• Journal of the East Asian Society of Dietary Life
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• v.19 no.6
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• pp.869-881
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• 2009

The purpose of this study was to investigate the food habits, dietary intakes and GTTs (glucose tolerance tests) of female college students according to BMI in the Kyunggido area. Questionnaire surveys, 24 hr dietary recalls, and GTTs were conducted with 108 students (36 under-weight students, 42 normal weight students, and 30 over-weight students). The results were as follows: The under wt. and over wt. groups had lower frequencies of eating breakfast but higher frequencies of eating lunch than the normal wt. group. The ratio of students having dinner everyday was low in the order of under wt. > normal wt. > over wt.. The over wt. group skipped breakfast mainly due to lack of time and the need to get to school, and the under wt. group had a high ratio (48.1%) of lunch skipper as a result of having brunch. The over wt. subjects had poor habits of eating fast and overeating, but the under wt. students ate their meals slowly. The under wt. group had a high ratio of students who ate snacks and fast-food. All subjects wanted to immediately improve their poor habit of overeating. Plant oil, animal Fe, and vitamin E intakes were lower in the under wt. group than in the other groups. For the GTT, the over wt. students had significantly lower blood glucose levels after 30 min. than the other groups. BMI was negatively correlated with blood glucose level after 30 min, but positively correlated with crude fiber, ash, Ca, plant Ca, P, animal Fe, Na, K, $\beta$-carotene, vitamin $B_6$, niacin, and vitamin E.

• Journal of the East Asian Society of Dietary Life
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• v.22 no.6
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• pp.711-719
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• 2012

The purpose of this study was 1) to investigate the food intake, dietary habits and life behavioral characteristics, and 2) to examine the relationship among these factors in a sample of adult Korean women. In October 2010, self-reported questionnaire survey was distributed to 200 women aged 30 to 65 in Gyunggi Province. Overall, 177 women participated and completed the survey. Most participants were married (97.2%) and housewives (83.6%). About 85% of respondents lived with their children. For comprehensive analysis, all respondents were divided into three age groups; 30~39, 40~49, and 50~65. The percent of intake of high protein foods such as meat and fish, eggs, and milk products was higher younger age groups (p<0.05). Moreover, age 30~39 group were more likely to eat potatoes (p<0.05) than age 50~65 group. However, age 50~65 women more frequently consumed seaweed than other age groups (p<0.01). Women who ate breakfast or dinner consumed a significantly higher frequency of vegetables, seaweed, potatoes, and kimchi (p<0.01). Additionally, women who ate breakfast with family more frequently consumed vegetables, fruit and kimchi. Furthermore, older women were likely to have less sleeping time than other groups. In conclusion, there were western dietary patterns among adult women and these dietary patterns were partly related to different life behavior and dietary habits. Considering that negative dietary habits of adult women can influence their family and health for the rest of their life, nutritional education programs based on changes in lifestyle should be developed.

• Journal of the Korean Dietetic Association
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• v.22 no.4
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• pp.261-271
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• 2016

This study was performed to determine lunch eating patterns and compare dietary habits among university students according to major lunch place. The subjects were 800 students from a university in Gyeonggi-do, and information was obtained by self-administered questionnaire. Data were compared among groups according to major lunch place (school cafeteria n=236, off-campus private restaurant n=73, on-campus private food shop n=134, delivery food n=119, convenient store n=238). Compared to male students, more female students ate at convenient stores (37.8% vs. 17.5%, respectively) while less ate at school cafeterias as the major lunch place. The on-campus private food shop group (19.1 year) were younger than the other groups (20.4~20.8 year). Dietary habits were significantly better in the school cafeteria group (65.55 out of 100) than in the other groups (60.33~62.66) (P<0.01). However, the satisfaction with school cafeterias was significantly lower than those with the other lunch places (P<0.01), and the most frequently answered reason for dissatisfaction was "not taste good" (51.0%). Despite having the lowest satisfaction among the five lunch places, eating at school cafeterias may be associated with better dietary habits in university students. Therefore, this study is able to provide basis for encouraging school cafeteria utilization for university students and for strategy development to improve university students' lunches.

• Journal of the East Asian Society of Dietary Life
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• v.9 no.3
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• pp.289-301
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• 1999

The purpose of this study is to investigate the food habits and the dietary intake of female college students at day and night class in the Kyunggido area. The questionnaires were collected from 294 students(151 day class and 143 night class students) out of 350 in total. The results are as follows: Breakfast for day class students and breakfast and dinner of night class students were skipped more than 3 times a week. The main reason was short of time. In the behavior of food intake, the frequency of yellow-green vegetables, milk and seaweeds intake was low in all respondents. 18.4% of night class students ate out 3 times a day. In the kind of menu for eating out, Korean food was the most frequent. snack food the second, and fast food came last. 23.9% of students ate something 2 or 3 times a day between meals. The main reason for eating between meals was the desire to eat for day class students, and hunger for the night time students. Consumption of coffee was 0.76 cup a day Daily mean of calory intake was 1.394 kcal and the ratio of carbohydrate. protein lipid was 61:14:25. The intakes of iron and niacin of the day class students were higher than those of night class students. There was no significant difference in intake of other nutrients between day and night class students. Intake of calcium and iron did not reach 50% of Korean RDA.