• Journal of Nutrition and Health
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• v.13 no.3
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• pp.117-125
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• 1980

In order to investigate the utilization efficiency of dietary protein in the rat body and effects of dietary fat on its protein metabolism, 51 Sprague-Dawly rats of 6 weeks old weighing approximate)y 106g were subjected to feeding trials for 4 weeks and then subsequently to metabolic trials for 3 weeks using six different diets composed of three different levels of protein (10%, 20% and 30%) with low (20%) and high (40%) fat content for each protein level, total energy being fixed at 4000 Kcal/kg by addition of an appropriate amount of carbohydrate, and the following results were obtained. 1) The body weight gain increased in the low fat diets with increasing protein level whereas it decreased in the high fat diets. Food efficiency also increased in the low fat diets with increasing protein level, but no do deffinitive trend was observed in the high fat diets. The protein efficiency was generally higher at low protein level and tended to decrease as the protein level increased, regardless of the amount of fat intake. 2) As the protein level was increasing, digestibility of dry matters and carbohydrate were decreasing whereas that of protein was slightly increasing. On the other hand, digestibility of fat was always very high regardless of the amounts of dietary protein and fat. 3) The gross energy intake was affected both by protein and fat contents in the diets: The energy metabolism efficiency was decreasing with increasing protein level and at the same protein level the energy utilization was considerably higher in the low fat diets than in the high fat. 4) From the above-mentioned experimental results it may be concluded that the best formula of diet for growing rats is probably composed of 20% protein, 20% fat and 60% carbohydrate.

• Journal of Nutrition and Health
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• v.31 no.3
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• pp.333-342
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• 1998

To assess the nutrient intake and diet quality of Korean adults living in rural area, dietary survey with one day 24 -hour recall method was given to 2037 subjects over 30 years of age living in Yeoncho-gun, Kyungki province of Korea, together with health survey. The mean daily energy intake was 1583 kcal, with 65.4% of energy intake being supplied by carbohydrate, 15.9% by protein and 18.7% by fat. Eighty percents of total food intake were supplied by vegetable food and the rest in the form of animal food . As well as insufficiencies in calcium and iron intake, the bioabailability of calcium and iron is considered to have been low because most of those intakes came form plant origins. For most nutrients except phosporous, proportions of subjects with intake levels less than 75% of RDA was over 40% and highest in the elderly. Those proportion of low intake among female were higher than those among male. The mean adequacy ration(MAR) , an index of overall dietary quality was 0.62 for females and 0.68 for males and decreased with increase of age. The indexes of nutritional quality (INQ) were over 1 for most nutrients except 0.06 of vitamin A, 0.73 of calcium and 0.85 of vitamin C, Nutrient intake levels less than 75% of RDA may be appropriate as a criteria for insufficiency of nutrient intake. Based on these results, it is evident that some of adults in rural areas did not consume enough nutrients, especially vitamin A, calcium and vitamin B$_2$, and that the dietary intake of female and the elderly was not adequate .

• Journal of the Korean Society of Food Science and Nutrition
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• v.9 no.1
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• pp.1-14
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• 1980

The purpose of this study was to assess dietary intake and food habits of low-income person aged 60 years or eldary. The hundred fifty persons from the suburbs of Jeonju were surveyed between August 1 to 20,1979. Results were as follows: Family environment Approximately 90% of elderly persons surved, lived with their children and grand-children: 5.2% together as a couple; and 4.4%, widowed, lived alone. Nearly 40% of the households has a average monthly incomes of W40,000 to W100,000. Average food expediture accounted for 50 to 70% of total monthly income, thus indicating that the subject families belonged to the lowest socioeconomic level. As pocket money, 74.5% of male subjects had more than W5,100 per month. whereas, 51.4% of female had less than W5,000. Anthropometric measurements: 97.6% of subjects has heights greater than 90% of the Korean standard for their age group, whereas 45.2% of the subjects were 60 to 89% of standard weight. 88% had an arm circumferences only 60 to 89% of the standard. Nutrient intake: Intake of the majority of nutrients was below the recommended allowances, especially for energy, protein, calcium and iron. The energy input ratio of carbohydrate: protein: fat was 73.1-80.9. 13.3-15.8: 4.5-11.5, showing very heavy dependence on carbohydrates for energy needs. The contribution of animal protein was 24.3% of total protein intake, indicating an improper protein diet. Other factors influenced on the nutrient intake: Poor teeth, illness, and poor appetite were always associated with inadequate intake of energy and nutrients. The larger the family size, the lesser intake of nutrients was observed among those elderly.

• Women's Health Nursing
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• v.27 no.1
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• pp.14-26
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• 2021

Purpose: This study aimed to identify the effects of nursing intervention programs for women with gestational diabetes mellitus (GDM) through a critical review of recent studies. Methods: Studies related to effects of nursing intervention programs for women with GDM published in English or Korean between 2000 and 2019 were extracted from 10 electronic databases. The quality of the studies was evaluated and double-checked for accuracy by two reviewers using the Revised Cochrane Risk-of-Bias tool for randomized controlled trials. Results: Twenty studies were selected, of which 19 had a low risk of bias and one had a high risk of bias. Interventions fell into six main groups: (1) integrated interventions, (2) self-monitoring of blood glucose levels, (3) dietary interventions, (4) exercise, (5) psychotherapy, and (6) complementary therapy. This review found that nursing interventions for GDM were of many types, and integrated interventions were the most common. However, low-carbohydrate diets and blood glucose monitoring interventions did not show statistically significant results. Evidence shows that various nursing intervention programs applied to GDM improved diverse aspects of maternal, fetal, and neonatal health, including both physical and psychological aspects. Conclusion: The composition and delivery of integrated interventions continue to evolve, and these interventions affect physical and psychological indicators. Although interventions affecting physical health indicators (e.g., blood glucose levels, diet, and exercise) are important, many studies have shown that programs including psycho-emotional nursing interventions related to anxiety, depression, stress, self- efficacy, and self-management are also highly useful.

• Journal of Nutrition and Health
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• v.29 no.3
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• pp.321-330
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• 1996

With changing socio-economic environments, there have been some changes in the Korean diet. One of major changes is the increasing fat intake. Based on the current trend of increase, it is important to understand factors related to fat intake levels. Objective of this study was to find out the differences in food consumption patterns, demographic characteristics, and other socio-economic factors among three groups of households. The households were devided into three groups by percentage of fat energy intake to total energy intake such as less than 15%(Group 1), from 15% to 25%(Group 2), and more than 25% (Group 3). Among 1, 987 households, the numbers in Group 1, Group 2 and Group 3 were 792(39.6%), 902(45.4%), and 293(15.1%), respectively. The mean size of family was 3.44 person per households for total survey household, 3.42 for Group 1, 3.54 for Group 2, and 3.21 for Group 3. More than 60% of families living in the rural area belonged to Group 1(p<0.05). Group 3 had most educated food preparers and more income than other groups(p<0.05). Group 3 showed higher intake of all nutrient analyzed except carbohydrate (p<0.05). Other than calcium and vitamin A for Group 1, and vitamin A for Group 1, and vitamin A for Group 2, all nutrient intake analyzed for three groups were more than 75% of Korean recommended dietary alowances. Mean fat intakes for Group 1, Group 2, and group 3 had highest amount of intake for all food groups. According to food group analysis, Group 3 had highest amount of intake for all food groups except vegetables. Group 3 consumed more than 10 times of meats compared to Group 1. Group 3 had more dishes prepared by baking, deep-fryng, stir-frying, and pan-frying other two groups. Processed foods were used most frequently in Group 3. Other diet and related factors were analyzed also. These results showed that the amount of fat consumed by Korean households varies widely. Households with high fat energy intake had tendency to reside in the largy city, and to have heigher education level and more income than other groups. They eat less vegetables, use more cooking methods using oils, and use more processed foods. To ensure a proper intake of fat, there should be two separate ways of approach for high fat energy group and low fat energy group, since they are different in many ways.

• Journal of Life Science
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• v.33 no.5
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• pp.436-444
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• 2023

Scientific training, diet, and ergogenic aids are widely used to overcome the limits of humans' physical abilities and to achieve excellent sports records. The adoption of nutritional strategies is important for athletes to perform at their highest level, and one of the main factors determining endurance ability is increased fat metabolism. A ketogenic diet (high fat, low carbohydrates) has thus been proposed as an alternative strategy to maximize fatty acid oxidation during prolonged periods of exercise. However, studies have shown mixed results regarding the ergogenic value of a ketogenic diet. For this reason, exogenous ketone supplements (EKS, ingestible forms of ketone bodies, ketone esters, and/or salts) have been suggested to obtain nutritional ketosis, an acute transient increase in circulating acetoacetate (AcAc) and b-hydroxybutyrate (bHB) concentrations, without limiting carbohydrate intake. Some studies have suggested the beneficial effects of EKS on the performance of endurance exercises by providing an additional fuel substrate for peripheral tissues, such as cardiac and skeletal muscles, sparing carbohydrates/increasing fat oxidation and post-exercise recovery by increasing glycogen resynthesis in the liver/muscle, attenuating protein degradation, stimulating protein synthesis in the skeletal muscle, etc. However, many studies have failed to observe the beneficial effects of EKS as an ergogenic aid. As such, this review summarizes the theoretical basis of, as well as the proposed and proven effects of EKS on exercise performance and recovery to date.

• Journal of Animal Science and Technology
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• v.45 no.4
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• pp.607-616
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• 2003

This study was conducted to determine the effect of feeding a total mixed ration(TMR) of broiler litter(BL) and bakery by-product(BB) with additional BL or rice straw incorporated at 10% of dietary DM as a roughage source on behavior pattern, nutrient intake, digestibility, digestible nutrient intake, ruminal and blood parameters, and N balance of sheep. All the treatment diets were formulated to be isoenergetic[total digestible nutrients(TDN) 66.9%]. Compared with the conventional formulated feed - rice straw feeding system(control), feeding TMR with BL(T1) or rice straw(T2) at 10% of dietary DM resulted in reduced eating, ruminating and total chewing time(P<0.05), similar DM intake, low(P<0.05) digestible DM, OM, fiber and total nutrients intake, low(P<0.05) nutrients digestibilities except EE, similar ruminal characteristics(pH, VFA concentrations and ratios, efficiency of carbohydrate fermentation, NH3-N), and favorable N digestion and retention. There were no differences in the above parameters between T1 and T2 with the exception of increased(P<0.05) eating, ruminating and total chewing time for T2. These results suggested that a TMR of BL and BB with or without rice straw may replace the conventional formulated feed and rice straw in ruminant diets successfully and furthermore feeding the TMR with rice straw made sheep behavior pattern more favorable.

• The Korean Journal of Food And Nutrition
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• v.28 no.2
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• pp.302-312
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• 2015

This study was conducted to evaluate the effects of constitutional diets in comparison with general low calorie diets in obese women. The subjects were 52 adult obese women that participated in a calorie restriction diet program (control group, n=16) or a constitutional diet program (experimental group, n=36) for 8 weeks. The subjects in the experimental group were classified as negative (Yin) or positive (Yang) constitution. The obesity management program focused on the calorie restriction diet (300~400 kcal reduction per day) for the control group, whereas, for a constitutional diet without calorie restrictions was allowed for the experimental group. Daily intakes of nutrient and food were assessed using a 24 hr recall method. Body measurements and blood biochemical parameters were measured at baseline and after 8 weeks. After the intervention, weight, body fat, BMI, waist circumference and hip circumference decreased significantly in both the control and experimental group. Energy intake increased from 1,679.6 kcal to 1,810.6 kcal along with significant increase in protein, carbohydrate, fiber, calcium, phosphorus, iron, zinc, vitamin A, vitamin $B_1$, vitamin $B_2$, niacin and vitamin C in the experimental group. Calcium intake increased from 54.0% to 72.4% of DRI in the experimental group. Hemoglobin concentrations were significantly decreased in the control group, but were increased in the experimental group. In addition, blood glucose, serum total cholesterol and triglyceride were significantly decreased in the experimental group. In conclusion, consumption of a constitutional diet without calorie restrictions for 8 weeks was effective for weight reduction with improvement of blood glucose, serum cholesterol and triglyceride.

• Journal of Nutrition and Health
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• v.41 no.7
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• pp.634-664
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• 2008

This study investigated the effects of the nutrition education on body weight, visceral fat and diet quality in the postmenopausal women. The subjects (n = 101) were randomly divided into two groups: Nutrition education + Exercise (NEE) group (n = 51) and Exercise only (EO) group (n = 50). Nutrition education was consisted of counseling in portion control, food selection for low carbohydrate, high fiber food items and for the improvement in micronutrient intakes and diet quality. After 6 months, the reduction in the body weight and visceral fat area was significantly greater in the NEE than in the EO group. The NEE subjects were further divided into two groups according to the amount of visceral fat area reduction; high visceral fat area loss (HVL) group with a visceral fat area reduction 2.35% or greater and low visceral fat area loss (LVL) group with a reduction less than 2.35%. In the HVL group, the reduction in body weight, BMI, percent body fat, waist to hip ratio and visceral fat area was significantly greater than that in the LVL group. We observed a significant increase in the serum HDL-cholesterol level and a decrease in systolic blood pressure, fasting blood sucrose, total and LDL-cholesterol levels in the HVL group compared to the LVL group. The energyadjusted protein, fiber, calcium, vitamin $B_6$, vitamin C, vitamin E intakes were significantly increased in the HVL compared to LVL group. The index of nutritional quality (INQ) and mean adequacy ratio (MAR) were also increased in the HVL group compared to the LVL group. These results show that our nutrition education program was an effective intervention measure for the reduction of body weight and visceral fat, blood pressure, glucose and lipid levels in the blood and also for the improvement of nutrient intake and diet quality in postmenopausal women who are overweight.

• Journal of Nutrition and Health
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• v.9 no.1
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• pp.43-50
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• 1976

This is the report of a food consumption survey of 193 members of 30 farm families in three rural villages of Korea. From a total of 188 households of the three villages, namely Wolgok in Kyunggi Do Province, Wachon in Kangwon Do Province, and Sobong in Cholla Namdo Province, 30 households were chosen for the survey. Four consecutive seasonal surveys, beginning in the autumn, November 1974 and finishing with the summer, August 1975, were made and each survey covered three consecutive days. The Precise Weighing Method was used in evaluating the kinds of food and nutrient intakes of the subjects. This method entails the accurate weighing of all foods by the investigator just prior to their consumption by the subjects under investigation. This survey was male to determine the actual food eaten by the members of these farm families at each season of the year, and to note any special differences in the foods consumed. The results obtained are summarized as follows: Food Intake The traditional ordinary diet of Korean farmers consists mainly of rice and other cereals as staple foods, and simple subsidary foods. The nutritional shortcomings of rice as a staple food are evident in the subclinical status of nutritional deficiencies. The mean consumption of cereals and their products was very high and it was more than half of the daily total food intake throughout all the seasons. The consumption of animal food, fruits, and fat by the farmers was very low. Fruit intake during winter and spring was almost nil. One of the special foods in the Korean dietary pattern is Kim-chi, a variety of pickled and fermented vegetables. The mean intake of Kim-chi during autumn and winter was very much higher than the other seasons. Korean farmers have difficulties in balanced year-round supply of food due to seasonality of food production and lack of food preservation. As nutrition problems of Korean farmers are highly influenced by seasonal variations, the expansion of an appropriate food preservation and storage programme should be encouraged. Special consideration should be given to new methods of preservation, the types of foods preserved, and production and consumption of nutritionally valuable foods for the improvement of the nutritional status in rural communities. Nutrient Intake Average adult rates for calorie and protein in the three study areas were 0.80 and 0.87 respectively, with little variations by villages. The adult caloric intake in averaged 2,928 kcal for autumn, 2,662 for winter, 2,673 for spring, and 2,760 for summer. Cereals contributed most of the total calories. In terms of the recommended daily dietary allowances for the Korean given by the Korea FAO Association, the diets in this survey were adequate except in the winter and spring. The protein intake averaged from 76.4 grams in autumn to 83.4 grams in summer and was near the recommended allowance, but a relatively large proportion of the total protein came from cereals and their products. The fat intake was unsatisfactory, ranging from 19.2 grams to 29.3 grams for the four seasons, and the consumption during farming season was higher than other seasons. It is apparent that the diet of the Korean farmers should be supplemented by calcium during autumn and winter. The highest calcium intake, with a mean of 583.5 milligrams, was recorded in summer. The mean intake of iron ranged from a low of 9.2 milligrams in the autumn to a high of 15.0 milligrams in the spring and it was satisfactory for all seasons. Among the vitamin group, the daily average intakes of vitamin A, thiamine, riboflavin, and ascorbic acid were lower than the desired intake throughout all the seasons. The mean vitamin A intake as ${\beta}-carotene$ ranged from a low of 2,807.8 IU to a high of 5,221.0 IU. The thiamine intake ranged from 0.98 milligrams to 1.19 milligrams, while mean riboflavin intake ranged from 0.92 milligrams to 1.13 milligrams. Ascorbic acid intake was 37.3 milligrams, the lowest, and the highest 47.8 milligrams. Niacin intake among Korean farmers was higher than the recommended allowance throughout all the seasons, and the mean intake ranged from 18.3 milligrams to 25.8 milligrams. The main character of the Korean farmers' diet has been found low in quality of protein and high in carbohydrate. Attention should be paid to the low intake of vitamin A, thiamine, riboflavin, and ascorbic acid among Korean farmers.