• Korean Journal of Community Nutrition
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• v.6 no.3
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• pp.317-330
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• 2001

The purpose of this study was to figure out the characteristics of dietary habits and lifestyles related to the development of insulin resistance syndrome(IRS). The participants in this study were 595 adults with one or more abnormal data from a health examination and 215 normal adults. When IRS was defined as a condition in which the subjects have 2 or more abnormalities among obesity, hyperlipidemia, hypertension and hyperglycemia, the prevalence rate was 37.8%. We classified the 595 adults by the number of components of IRS components they had, the higher age and obesity index they had. Total cholesterol and glucose levels in the blood were also positively related to the number of IRS components. IRS subjects tended to practice less habitual drinking and more exercise and weight control. Coffee consumption and dining out frequency were also lower in the IRS group. An analysis of food habits by odds ratio indicated that total food score was better in the IRS group. However, it appeared that food habits such as \"frequent snacking\" and \"never rejecting offered foods\" need to be improved in IRS subjects. Other undesirable food habits were related to the consumption of eggs, dairy products, fried foods, garlic and onion. Dietary intake of Ca, Fe, riboflavin, Vit A, and energy were less than 75% of the Korean recommended allowance for more than half of the subjects. Nutrient intake was lower, Ca/P ratio from food intake was worse in the IRS group. Our results indicated that nutrition counseling for IRS need to be focused on balanced food intake to supply sufficient amount of each nutrient.nt of each nutrient.

• Asian-Australasian Journal of Animal Sciences
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• v.13 no.7
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• pp.967-973
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• 2000

A metabolism trial was conducted with 28 Najdi rams allocated into seven dietary groups to evaluate the effect of dietary inclusion of Salicornia bigelovii Torr biomass on nutrient digestibility, rumina I fluid metabolites and nitrogen and mineral balances. Either the stems (ST) or spikes (SP) of this seawater-irrigated halophyte were incorporated into complete diets at rates of 0, 10, 20 and 30% levels, replacing equal amounts of rhodesgrass hay in a ground mixed control diet. Digestibility of DM, OM, EE, NFE and fecal and urinary nitrogen were not affected by increased level of ST in the diet. As level of ST increased from 0 to 20% in the diets, CP digestibility and nitrogen retention approached their maximum (p<0.01), whereas CF digestibility reached its minimum (p<0.01). On the other hand, except for EE, digestion of all nutrients and nitrogen retention were linearly depressed (p<0.01) as SP increased in the diets from 10 to 30% level. Concentration of ammonia-N, total VFA and pH values in the rumen fluid were lower (p<0.01) with the ST- or SP-fed diets than with the control diet. Increasing level of ST or SP in the diet was associated with an increase (p<0.01) in the proportion of acetate and a decline (p<0.01) in molar percentage of propionate in the ruminal fluid. Sodium absorption increased (p<0.01) with increased ST and SP in the diets up to the 10 and 20% level, respectively, followed by constant absorption values up to the 30% level. When the level of ST in the diet gradually increased to 30%, a concomitant increased (p<0:01) in Ca and P absorption were obvious; whereas, increased level of SP in the diets from 0 to 30% resulted in noticeable (p<0.01) depression in Ca and P apparent absorption.

• Journal of Nutrition and Health
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• v.28 no.5
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• pp.442-450
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• 1995

This study determined plasma glucose, free fatty acid(ffa), epinephrine, norepinephrine, creatine the phosphokinase(CPK), calcium (Ca), magnesium(Mg) and hydroxyproline, Ca and Mg in the heart muscle. Thirty six male Sprague Dawley rats average weighing 110g divided into two diet group : normal Mg group(0.05% Mg), Marginal Mg group(0.005% Mg). After the rats were on experimental diets for 2 weeks, rats for each group were randomly assigned to stress and no stress group and 30 minutes IMMB stress was administered to stress group every day for two weeks. The following were found : 1) Rats fed normal magnesium diet showed decreased plasma glucose and non signficant change in norepinephrine and CPK with IMMB stress, while magnesium deficient rats showed elevated plasma glucose, norepinephrine and CPK with stress. 2) Myocardial hydroxyproline and plasma epinephrine were not significantly different among groups. 3) In the rats fed adequate magnesium, stress increased plasma magnesium while rats on marginal magnesium diet did not show significant change with stress. 4) Plasma and myocardial calcium were increased in rats fed marginal Mg diet, but did not show any significant difference with stress.

• Korean Journal of Community Nutrition
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• v.6 no.4
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• pp.628-634
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• 2001

This study was conducted to investigate the relationship of serum calcium and magnesium level to depression and anxiety symptoms in 66 perimenopausal women. Daily nutrient intakes and dietary sources of calcium were analyzed by convenient me쇙. General status was conducted by a questionnaire whereas the questionnaire of CED-S(the Center for Epidemiological studies-Depression Scale) was used for depression and Spielburger's STAI-S(state-Trait Anxiety Inventory-State) was used for anxiety. Fasting blood samples were collected, and serum calcium and magnesium concentrations were measured before and after calcium supplementation. The age distribution of the subjects was 49-55 years. Results indicated that serum calcium concentrations were significantly(P〈0.05) increased to normal ranges after calcium supplementation. Depression and anxiety scores of the subjects with calcium supplementation were significantly(p〈0.05) lower than those before calcium supplementation. There were significantly(P〈0.05) decreased between serum magnesium concentration and depression and anxiety scores, but calcium concentration was not significantly decreased. These results suggest that psychological conditions of perimenopausal women are possibly effected by serum calcium and magnesium levels. More studies are needed to measure the long-term effects of calcium supplementation on psychological conditions in perimenopausal women.

• Journal of Nutrition and Health
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• v.37 no.9
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• pp.825-837
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• 2004

Studies on the health problems of the elderly have been increased with increasing life expectancy of Koreans. To assess the health status of people over 50 years old including the elderly (678 free-living people: men (168), women (510)), anthropometric measurements and biochemical nutritional status were analyzed. General characteristics and the prevalences of specific diseases were also examined. The mean anthropometric values for males and females were heights of 162 cm and 149 cm, respectively; and weights of 59 kg and 52 kg, respectively, which were much lower than the Korean standards established in the Korean Recommended Dietary Allowances. The mean BMI, WHR (waist hip ratio), and body fat rate (%), which are obesity indices, were significantly higher in females than in males. As the age went up, height, weight, lean body mass, and mid-arm circumference decreased. Whereas, blood pressure (SBP) for women increased. Mean blood HDL-cholesterol levels of men and women were 46.0 mg/dl and 46.3 mg/dl, respectively; their triglyceride levels were 129.1 mg/d1 and 135.6 mg/dl, respectively, which were not significantly different. Total cholesterol and LDL-cholesterol levels were significantly higher in females than in males. For man there were significantly different in ${\gamma}$-GTP, Na levels by age. As the age went up for women, RBC, hemoglobin, hematocrit, HDL-cholesterol, ${\gamma}$-GTP and $Ca^{2+}$ levels significantly decreased. Levels of total protein and albumin were above the lower normal limit for the majority of the participants. Prevalence of anemia, assessed by hemoglobin using World Health Organization (WHO) definition, was 43.9% for men and 42.1% for women. Also, many of the subjects were out of the normal range in total cholesterol (women), HDL-cholesterol, TAS (total antioxidant status), APase, RBC, hemoglobin, hematocrit levels. Therefore, measures to improve the biochemical nutritional status for the people in rural area are required.d.

• Journal of Nutrition and Health
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• v.21 no.5
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• pp.305-316
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• 1988

The purpose of this research was to determine the relationship of the dietary nutrients to blood pressure among preschool children in Seoul and to concurrently study the effect of seasonal variance on the aforementioned relationship. The subjects of the study consisted of 203 preschool children aged four to six years. Anthropometric measurements of height, weight, pulse rate and blood pressure, urinary excretion of five cations(Na, K, Ca, P, Mg), creatinine and urea nitrogen and dietary questionaires concerning sodium, potassium calcium and phosphorus were taken during the two periods of summer(Aug. 1986)and winter(Feb, 1987). The results obtained are summarized as follows: 1) The daily urinary excretion of five cations, creatinine and urea nitrogen is summer and winter was as follows; The sodium content was 57.8 mEq in the summer and 59.4 mEq in the winter ; potassium 20.4 mEq and 23.0 mEq, respectively ; calcium, 5.5 mEq and 3.6 mEq, respectively ; and phosphorus, 27.4 mEq and 19.9 mEq, respectively. Only calcium and phosphours excretions in the urine showed significant differences per season(p<0.05). 2) The average dietary intake per day of sodium was 2349mg in the summer and 2155mg in the winter ; potassium consumption was 1425mg in the summer and 1448mg in the winter ; intake of calcium was 472mg in the summer and 500mg in the winter ; and phosphours consumption was 642mg in the summer and 634mg in hte winter. The sodium-to-potassium consumption ratio 1.6 and 1.5, respectively, in the summer and in the winter and the calcium-to-phosphorus ration was 0.7 in the summer and 0.8 in the winter. The dietary calcium intake showed significant differences between the seasons. 3) The principal source of sodium consumption among preschool children was from seasoning-including talbe salt, soy sauce and instant sauce-which accounted for higher then 45% of the sodium intake in both seasons. The main source of potassium was frutis and vegetables which accounted for 29.6% of the potassium intake in the summer and 25.7% in the winter. Milk and milk products were the primary dource of calcium(higher then 40% in both seasons) 4) In the summer, urinary phosphours levels were weakly reated to systolic blood pressures. (0.05

• Korean Journal of Rural Living Science
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• v.4 no.2
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• pp.75-81
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• 1993

This study was performed to investigate the effects of dietary calcium on blood and tissue lipids of adult rats fed a high fat diet with or without supplemental cholesterol for 4 weeks. Male Sprague-Dawley rats were fed the experimental diets containing 18%(w/w) beef tallow and three levels of calcium 0.1%, 0.5% and 1.5%. The contents of total lipid, cholesterol, triglyceride and phospholipid in blood, liver, small intestine, aorta, small intestinal contents and feces were determined. Only in rats fed the diets containing 1% cholesterol the concentration of cholesterol in aortic serum and various tissues significantly increased, and then decreased with increasing dietary calcium intake. Another observation was that high Ca intake significantly facilitated the fecal lipid and cholesterol excretion and bowel movement. These results suggest that possible hypocholesterolemic effects of dietary calcium could be related to the hypercholesterolemia and to the increase in excretion of fecal lipid and cholesterol.

• Nutrition Research and Practice
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• v.9 no.5
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• pp.539-546
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• 2015

BACKGROUND/OBJECTIVES: Women's bone health status is closely related with environmental factors and lifestyle factors. The purpose of this study is to evaluate the dietary risks of osteoporosis and osteopenia for Korean postmenopausal women. SUBJECTS/METHODS: The data from 1,433 subjects from the 2010 KNHANES were used and divided into three groups: normal, osteopenia, and osteoporosis group using bone mineral density (BMD). Nutrient intakes and food intake frequency were evaluated. Logistic regression analysis was applied to determine the odds ratios for osteoporosis and osteopenia. RESULTS: The RNI percentage of each nutrient and food intake frequency from 12 food groups decreased as bone mineral density status deteriorated. Risk for osteoporosis of low calcium (Ca) intake, under the EAR, showed an odds ratio of 2.13(95% CI; 1.26-3.61, P < 0.05). Higher intake frequency showed preventive effect from osteoporosis compared to lower intake frequency in such food group as dairy products (ORs 0.40, CI 0.21-0.75), beans (ORs 0.49, CI 0.29-0.83), seaweeds (ORs 0.55, CI 0.32-0.94), fish (ORs 0.56, CI 0.32-0.98), and fruits (ORs 0.42, CI 0.23-0.79) after adjusting for age. CONCLUSION: To prevent osteoporosis in later life, sufficient Ca intake and more frequent intakes of foods containing Ca such as dairy products, beans, fish, seaweeds, and fruits, which help in Ca absorption, should be stressed for Korean postmenopausal women.

• Korean Journal of Community Nutrition
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• v.10 no.6
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• pp.892-904
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• 2005

This study was carried out to assess the food habit index of the long-lived elderly who were aged over 85 years living in Ganghwa-gun. A survey was conducted during December 2003. Dietary nutrient intake data was obtained through the 24-hr recall method. The subjects were 96 (32 males, 64 females) aged people and divided into three groups based on food habit index scores. Such as group A: good $16\∼20$, group B: fair $11\∼15$, and group C: poor $5\∼10$. The three groups of the subjects were 90.7 years of age and $21.3\;kg/m^{2}$ of BMI on average. Healthy eating index scores of the subjects were $9.4\%$ in group A, $54.2\%$ in group B and $36.5\%$ in group C. Their level of education were lower and their levels of living standards tended to have been middle and lower of the middle class. The percentage of living together with their families or spouses in all groups were over $60.0\%$ and the rates of the subjects who have responsibility for their meal preparations were also very high in all groups. Most subjects tended not to drink nor smoke, and spend $8\~10$ hours for their sleep. The percent of number of diseases in group A was lower than in groups B and C. Their dietary habits such as taking three meals a day regularly have shown that they have good eating habit in general. There was a positive correlation between the eating behaviors and nutrient intakes. The protein, animal protein, fat, PUFA, vitamin E, vitamin $B_{2}$, niacin, P and K intaks in group A were significantly higher than that of the groups B and C. For group A of good food habits aged had no sufficient intake of Ca and vitamin A than the Korean RDA and long-lived elderly of group C in Ganghwa areas had worse nutrients intakes, especially Ca, vitamin A, vitamin $B_{2}$ and vitamin E. According to this research having a good eating habits could be considered as increasing of the health and nutritional status. (Korean J Community Nutrition 10(6) $892\∼904$, 2005)

• Korean Journal of Community Nutrition
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• v.10 no.1
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• pp.91-100
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• 2005

This study was conducted to investigate the effects of smoking on nutrition intake, bone mineral density and blood mineral status. The subjects were composed of two groups: 100 smokers and 100 non-smokers was used along with a questionnaire. Anthropometric measurements, dietary intakes using 24-hours recall method were compared. At twenty subjects from each group were selected, bone mineral density were measured by quantitative ultrasound and plasma mineral levels were analyzed by ICP spectrometer. The average ages of smokers and non-smokers were 23.9 and 22.8 years old, respectively. The height, weight and BMI of the smokers were no significant difference. The average numbers of smoked cigarettes were 11.8/d and the average packyear was 3.1 in the smokers. About $97\%$ of the smokers drank alcoholic beverages, while $85\%$ of the non-smokers did. The smokers tended to eat less meals and dinner meal, but drink coffee more often compared to the non-smokers. The mean daily energy intake and CPF energy intake ratio were 2184. 9 kcal and 57.2 : 13.7 : 26.4 in the smokers and 2262.6 kcal and 55.8 : 13.1 : 28.6 in the non-smokers. The smokers consumed significantly lower intake of $\beta$-carotene. There were no significant differences in bone mineral density of BUA, SOS and QUI. There were no significant differences in plasma levels of Ca, Mg, Fe and Zn. However, plasma Cu level of the smokers was significantly higher than that of the non-smokers. In conclusion, the smokers of this study showed a more undesirable dietary intake in the light of their low ,B -carotene and high alcoholic beverages, and coffee. The plasma Cu level of the smokers was higher than that of the non-smokers, showing that Cu is involved in smoking. Therefore, it could be suggested that more systematic research be conducted with respect to Cu and smoking and that increased nutrition education and guidelines for smokers are required.