• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2006년도 하계학술발표대회 논문집
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• pp.826-831
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• 2006

In this paper, we discussed the energy performance of underfloor air distribution(UFAD) and overhead air distribution system according to outdoor air intake rates in a office building. For this, the laboratory(S lab.) is selected for measuring the thermal environments of UFAD system and overhead system. Based on the measured data, the TRNSYS simulation is used to evaluate the energy performance of UFAD system and the overhead system according to outdoor air intake rates. By increasing outdoor air intake rates from required outdoor air intake rates(100CMH) to maximum air intake rates, the energy savings of UFAD system comparing with overhead system are varied $15%{\sim}25.6%$ in summer, $12.8%{\sim}19%$ in fall/spring and not varied in winter(8%). As results of simulations on stratification height and cooling set temperature, the lower the stratification height and the higher cooling set temperature, the larger cooling energy savings of UFAD comparing with overhead system according to outdoor air intake rates.

• Journal of Nutrition and Health
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• 제33권2호
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• pp.193-201
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• 2000

This study was conducted to investigate the effectiveness of nutrition counseling on the dietary intake and nutritional status cancer patients undergoing radiotherapy treatment. The study was conducted over 6 week period and included 104 patients : 66 received nutrition counseling as the variable group of 42 male and 24 female and 38 patients received no counseling as the control group of 19 male and 19 female. Nutrition counseling was accompanied with the radiation therapy and adminstered via counseling session and distribution of printed material during radiation therapy for 6 weeks. Nutrition counseling aimed at maintaining a balanced diet and preventing weight loss of subjects, guideline used for energy and protein intake were 35kcal/kg IBW and 1.5-2.0g/kg IBW, respectively. Over the course of the study, the counseling group increased significantly in comparison to the control group's energy intake, evidenced by the counseling group's initial mean daily energy intake of 1932.0kcal, and 4 and 6 week mean energy intake values of 2046.6kcal, 2066kcal, respectively. But mean energy values of control group was 1614.3kcal at 4 week. Th energy intake per weight values and protein intake per weight values for initial, 4 and 6 week intervals for counseling group were 33.2kcal/kg, 33.7kcal/kg, 34.0kcal/kg, and 1.48g/kg, 1.58g/kg, 1.59g/kg, respectively. Based on results, nutrition counseling had positive effects on both the variety of diet and energy intake of the variable group, mostly due to an increase in dairy product and egg consumption. In addition, the percentage of counseling group patients who consumed all 5 food group increased from 48.5% to 54.5%. Sufficient energy intake and protein consumption seem to be important factors in weight loss prevention, evidenced by weight gain by subjects in the counseling group who had 36.1kcal/kg/day mean energy intake and 1.77g/kg/day mean protein intake after 4 weeks. Counseling group subjects experiencing weight loss had lower intake and 1.77g/kg/day mean protein intake after 3 weeks. Counseling group subjects experiencing weight loss had lower intakes of 29.3kcal/kg/day for energy and 1.33g/kg/day for protein during the same period. Another significant factor in weight loss prevention of the counseling group could be the variety of diet. The dietary variety scores(DVS) of both counseling and control groups differed significantly : the counseling group had a mean score of 34 while the control group of patients. At the end of the study, the mean percentage of subjects within each group having a DDS 5 was higher in the counseling group (54.5% v.s. 24.0%). In this study, nutrition counseling for cancer patients undergoing radiation therapy proved to be effective in preventing weight loss, a major complication during radiotherapy. Nutrition counseling not only increased protein and energy intake, but also had desirable effects on variety or diversity of diet.

• Journal of Korean Biological Nursing Science
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• 제14권4호
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• pp.258-267
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• 2012

Purpose: The purpose of this study was to identify the relationship between energy intake and fatigue in cancer patients receiving chemotherapy. Methods: A total of 106 subjects had participated in this study. Data were collected at a university hospital in D city from September 1st to November 10th, 2010. Energy intake including carbohydrates, protein and fat was measured by scale and analyzed using Can Pro 3.0 program. Fatigue level was measured by the Revised Piper Fatigue Scale. Data were analyzed using descriptive analysis, t-test, ANOVA and Pearson correlation coefficient with SPSS/WIN 15.0. Results: The mean calorie intake during chemotherapy was $906.53{\pm}201.28Kcal/day$ which was 45.3% of the recommended daily calorie intake. The mean of protein intake level was $43.62{\pm}11.13g/day$, and it was low compared to the recommended daily protein intake. Calories, carbohydrates, and protein levels on 3rd day after chemotherapy were significantly lower than those of 2nd day after chemotherapy (p<.001). The fatigue level during chemotherapy was $5.77{\pm}0.77$ which was moderate level of fatigue. There was a significant negative interrelation between energy intake and fatigue. Conclusion: Theses results suggested that nursing approaches to encourage dietary intake may be helpful to reduce fatigue for cancer patients receiving chemotherapy.

• Journal of Community Nutrition
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• 제2권2호
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• pp.105-109
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• 2000

To investigate the correlation between college women's energy intake and body fat percentage, this study was undertaken with 116 college women aged 19-24 years. The subjects were 20.9 years old on the average, and mean height and weight was 161.3 cm, 51.2 kg. Blood pressures were 112.4 mm Hg(systolic pressure), 70.2 mmHg(diastolic pressure). The number of pulse was 75.5 count/min. The energy intake and percent body fat were examined. The average intake of energy was 7652kcal/day(82.3% of RDA), which was lower than the recommended amount. It was similar to the level of energy intake of Korean women. BMI was 19.7 and body fat percent was 24.4%, so they appeared plump. According to BMI, 43.1% of subjects was grouped into normal, 56.9% was thin ; there was no difference between groups in age and stature. Also, normal group(27.1%) shoed significantly higher body fat percent(27.1%) than thin group(22.3%). But, body fat percent of thin group according to BMI was shown normal. Therefore, it may be thought that BMI is unsuitable indicator in this study. As a result of analyzing the correlation between body-measuring value and food intake, body fat percent against body weight and BMI was significant at the level p<0.001, but thee was no significant correlation with food intake. Therefore, it is desirable to recommend a healthful dietary lifestyle and activities for young women who want to reduce body weight due to excessive concerns regarding their outward figure.

• Journal of Nutrition and Health
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• 제49권6호
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• pp.482-494
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• 2016

본 연구에서는 국가 단위 대규모의 데이터 (2013~2014년 국민건강영양조사 자료)를 활용하여 성인 남녀별 외식으로부터 섭취하는 열량의 사분위에 따른 군간 일반사항, 영양소 및 식품군별 섭취 상태를 분석하고, 영양소별 섭취 밀도 및 영양의 질적 지수를 평가하였으며, 그 결과는 다음과 같다. 남녀 모두에서 외식을 통한 열량의 섭취 정도가 높은 성인일수록 연령이 유의적으로 낮았고, 음주 빈도, 가구소득 및 교육수준이 유의적으로 높은 결과를 보였다. 또한 외식을 통한 열량 섭취가 높은 남녀 성인에서 전체 열량 섭취량 및 지방의 섭취 밀도는 높게 나타난 반면, 식이섬유소, 비타민 $B_1$, 칼슘, 인, 칼륨 및 철과 같은 미량 영양소의 섭취 밀도는 유의적으로 낮은 결과를 보였으며, 비타민 $B_1$, 칼슘, 인 및 철의 INQ와 같은 식사의 질 지수 역시 유의적으로 낮게 나타났다. 식품군별 섭취 비율을 분석시 남녀 모두에서 외식을 통한 열량 섭취가 높은 군에서 육류, 음료 및 주류의 섭취 비율이 유의적으로 높았던 반면, 곡류, 채소류, 어패류 및 해조류의 섭취 비율은 유의적으로 낮게 나타났다. 이와 같은 결과는 식생활에서 외식이 차지하는 비율이 계속적으로 증가하고 있는 현 시점에서, 외식을 많이 하는 대상자와 관련된 전반적인 영양소 및 식품군별 섭취 상태를 파악할 수 있는 기초자료로써 활용될 것으로 예상된다.

• 대한지역사회영양학회지
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• 제20권1호
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• pp.41-52
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• 2015

Objectives: Korean elderly people are known to consume diets high in carbohydrates low in vegetables compared to other age groups. This study evaluated the chronic disease risks and nutritional status in this group based on the percentage of energy from carbohydrates and the frequency of vegetable intake. Methods: Using the 2007~2009 Korean National Health Nutrition Examination Survey data, except those who were undergoing treatment for chronic disease, final 1,487 subjects aged 65 and older were divided into 4 groups: moderate carbohydrate energy ratio of 55~70% and low frequency of vegetable intake defined as less than 5 times per day (MCLV), moderate carbohydrate ratio and high frequency of vegetable intake more than 5 times (MCHV), high carbohydrate energy ratio above 70% and low frequency of vegetable intake less than 5 times (HCLV), and high carbohydrate ratio and high frequency of vegetable intake more than 5 times (HCHV). All data were analyzed after the application of weighted value, using a general linear model or logistic regression. Results: More than half of Korean elderly consumed diets with HCLV, and this group showed poor nutritional status and lower frequency of intake of most food items, but with no risk of chronic disease such as diabetes, obesity, hypertension, cardiovascular disease or anemia probably due to low intake of energy. On the contrary, MCHV group with a high percentage of energy from fat and protein showed the highest intake of energy and most nutrients, the highest frequency of intake of most of food items and a tendency of high risk of abdominal obesity, being followed by the MCLV group. Meanwhile, HCHV group showed a tendency of high risk of hypertension, followed by HCLV group with low frequency of intake of vegetables compared with the two moderate carbohydrate groups. Conclusions: The results suggested that the percentage of energy from carbohydrate and the frequency of vegetable intake affected the nutritional status, but not significantly affected the risk of chronic disease in Korean elderly. Further studies using more detailed category of % energy from carbohydrates and of type and amount of vegetables with consideration of individual energy intake level, excessive or deficient, are needed to confirm the results.

• Asian-Australasian Journal of Animal Sciences
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• 제2권2호
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• pp.59-66
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• 1989

Growing and finishing Korean native bulls were used to investigate the effects of different dietary energy levels on performance and energy intake. Experimental observations were made over three weight categories (200 to 250 kg, 250 to 350 kg and 350 to 450 kg). Three diets (2.4, 2.6 and 2.8 Mcal ME/kg DM) were used for each weight category. Crude protein levels of the diets were 12, 11 and 10% for the respective weight groups. Dietary energy level did not significantly affect daily body gain within a weight range but daily body gain during the entire experiment was higher (P<.05) in bulls receiving 2.6 Mcal energy diet than in those fed 2.4 and 2.8 Mcal energy diets. The following equation was developed to predict daily body gain(Y) from energy levels(X) of ration. $Y\;=\;1.3.475X\;-\;2.5949X^{2}\;-\;16.355$ Increasing energy levels significantly (P<.05) decreased daily feed intake. The following equation was developed to predict daily feed intake(Y) from energy levels(X) of ration. $Y\;=\;-30.013X\;+\;5.4401X^{2}\;+\;49.119$ Feed intake per metabolic body size during the entire feeding period ranged from 100.9 to 110.8 g and was lower in bulls fed 2.6 and 2.8 Mcal energy diets than in those fed 2.4 Mcal energy diet. Increasing energy levels significantly (P<.05) improved feed efficiency. The following equation was developed to predict feed efficiency(Y) from energy levels(X) of ration. $Y\;=\;-118.34X\;+\;22.448X^{2}\;+\;162.85$ Daily energy intake during the entire experiment ranged from 18.90 to 19.99 Mcal and there was no significant difference among energy levels. Daily energy intake per metabolic body size during the feeding period ranged from 248.6 to 260.8 kcal and was slightly higher in bulls receiving 2.8 Mcal than in those fed 2.4 and 2.6 Mcal energy diets. Energy required per kg body gain ranged from 17.25 to 19.11 Mcal and was slightly lower in bulls receiving 2.6 Mcal energy diet than in those fed 2.4 and 2.8 Mcal energy diets.

• 한국식품영양학회지
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• 제32권3호
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• pp.167-178
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• 2019

The purpose of this study was to investigate the intake status of energy drinks, knowledge of caffeine and the perception on intake of energy drinks by university students. We surveyed 351 university students from October 25, 2017 to January 25, 2018. The subjects (70.9%) consumed energy drinks more than once. Male students consumed energy drinks more frequently than the female ones. A huge portion (68.3%) of the subjects consumed energy drinks to recover from fatigue and reduce sleepiness. Moreover, they consumed most of the energy drinks at home and the university library. The main anticipated efficacy of energy drinks was the relieving drowsiness. Respondents (86.3%) perceived that energy drinks could be hazardous to the health of human beings. The main risks of consuming energy drinks were sleep disorders, addiction problems and heart beating. The main recognized effects of energy drinks were relieved drowsiness and decreased fatigue. The major side effects were heart beating, nausea, vomiting, heartburn and sleeping disorders. This study suggests that nutritional education is needed to confirm the recommendation of daily intake for caffeine and to raise awareness about the side effects of energy drinks.

• Journal of Nutrition and Health
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• 제24권2호
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• pp.132-141
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• 1991

The purpose of this study was to choose the assessment method of usual energy in take for epidemiological study. Energy intakes of 30 female college students estimated by frequency questionnaires and energy balance method were compared with that obtained by dietary record. The results are summarized as follows. Assessment of mean energy intakes by dietary record frequency questionnaires energy balance method were 156.2Kcal, 1517Kcal, 1878.0Kcal respectively. There was no significant difference between energy intake by dietary record and that by frequency questionnaire. Frequency questionnaire covers 4 weeks energy intake and it can be substituted for dietary record. Although energy intake by energy balance method was significantly different from that obtained by dietary record it shows high correlation with anthropometric and obesity indices and energy expenditure of the subjects.

• 한국식생활문화학회지
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• 제11권5호
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• pp.643-649
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• 1996

This study was performed to investigate the adequacy of dietary fat and protein intakes among female college students. Daily intakes of energy, fat, protein, major amino acids and other nutrients were measured in 52 female college students. Daily energy intake was 75.8% of the recommended intake. Fat and protein consist 19.2% and 16.7% of the total calorie, respectively. The average protein consumption per day was 105% of the recommended intake. Essential amino acids intakes were more than the recommended amounts which appears in the 6th edition of Recommended Dietary Allowances for Koreans. However, when the intake of each essential amino acid was compared to the recommended amino acid requirement pattern, these subjects did not meet the estimated requirements. There was a highly significant correlation between daily protein intake and lipid intake implying the major sources of protein in the diet were also major sources of fat. Daily intakes of dietary fiber, vitamin C, iron, and phosphorous were above the recommended levels of intake. However, blood hemoglobin concentration was marginal indicating dietary iron consumption is not a good marker for iron status. Also, calcium intake was only 63.5% of the recommended intake. Therefore, these results imply that main problems for these subjects are low energy consumption, low calcium intake, and the quality of protein. However, as opposed to the hypothesis, the main energy sources were not the food items high in saturated fats such as instant foods, which should be emphasized further.