Objectives The purpose of this study was to examine mothers’ knowledge levels on complementary foods and their perception of convenience complementary foods. Methods An online survey was conducted with mothers aged 20–49 years who had purchased convenience complementary foods and had a preschool child aged 4 months or older. The respondents were categorized into 3 groups based on their knowledge scores: low- (0–50 points), mid- (55–65 points), and high- (70–100 points) knowledge groups. Results The average score of mothers’ knowledge on complementary foods was 58.8 out of 100 points. Working mothers were found to have lower levels of knowledge compared to mothers who were housewives. Only 1/4 of responding mothers had educational experience on complementary foods. Mothers expressed a desire for information on the types of complementary foods (72.2%) and the intake amounts (60.3%) corresponding to each phase of their child’s development. Multivariate analysis of variance revealed significant differences in health (P = 0.002), variety (P = 0.039), and hygiene (P = 0.041) among the factors taken into consideration when purchasing convenience complementary foods according to the mothers’ knowledge levels. Mothers in the high-knowledge group placed a greater importance on ‘balanced nutrition’ (P = 0.022) and ‘hygienic cooking’ (P = 0.010) compared to mothers in the low-knowledge group. The results of the modified importance-performance analysis, which compared the importance and performance of the factors taken into consideration when purchasing convenience complementary foods, highlighted the need for efforts in ‘health,’‘hygiene,’ and ‘price,’ while also indicating an excessive effort in ‘convenience.’ Conclusions: This study suggests expanding relevant education programs to enhance mothers’ knowledge on complementary foods, especially for working mothers. In the industry, marketing strategies for complementary food products could be developed that align with the needs of mothers, focusing on health, hygiene, and price.
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Development and Evaluation of a Nutrition Education Website for the Prevention and Management of Childhood Obesity Miyong Yon, Chan Park, Kwan-Hee Yoo, Taisun Hyun Korean Journal of Community Nutrition.2012; 17(4): 390. CrossRef
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Objectives This study compared the nutritional intakes of early and late preterm infants in a neonatal intensive care unit (NICU) and at home. The dietary problems and the need for community care services for premature infants were further investigated. Methods This is a cross-sectional and descriptive study on 125 preterm infants and their parents (Early preterm n = 70, Late preterm n = 55). The data were collected by surveying the parents of preterm infants and from hospital medical records. Results No significant differences were obtained between the early and late preterm infant groups when considering the proportion of feeding types in the NICU and at home. Early preterm infants were fed with a greater amount of additional calories at home and had more hours of tube feeding (P = 0.022). Most preterm infants had feeding problems. However, there was no significant difference between early and late preterm infants in the mental pain of parents, sleeping, feeding, and weaning problems at home. Many parents of preterm babies had no external support, and more than half the parents required community care to take care of their preterm babies. Conclusions Regardless of the gestational age, most preterm infants have several problems with dietary intake. Our study indicates the need to establish community care services for preterm infants.
OBJECTIVES This study examined the relationship between the presence of allergic rhinitis and the nutritional intake levels of Korean infants. METHODS The study involved a total of 1,214 infant subjects aged 1~5 months from the 2013~2016 KNHNES (Korea National Health and Nutrition Examination Survey). The Subjects were classified into two groups based on the presence of allergic rhinitis: Non-allergic rhinitis infants (NARI, n=1,088) and allergic rhinitis infants (ARI, n=126). The general characteristics and family history of allergies, nutrient intake status, nutrient supplement intake, and breast milk and baby food start period data of the two groups were compared. All statistical analyses accounted for the complex sampling design effect and sampling weights. RESULTS The mean age was 0.5 years old in the ARI group compared to the NARI group. In the residence, the rate of urban was higher in ARI. The family history revealed a significant difference between the two groups, particularly those of mothers rather than fathers. The nutrient intake levels were high in energy, phosphorus, sodium, potassium, iron, riboflavin, niacin, and polyunsaturated fatty acids. Breastfeeding was significantly higher in the ARI group than in the NARI group. The baby food start period was 0.3 months earlier in NARI group than in ARI group. The height, body weight, and birth weight were higher in ARI group than NARI group. The result of Odds ratio analysis showed that excess energy, protein, calcium, phosphorus, iron, riboflavin, and niacin intake increases the risk of allergic rhinitis. CONCLUSIONS These results can be used as data to develop nutrition guidelines for allergic rhinitis infants.
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OBJECTIVES This study examined whether the infant feeding type and duration are related to the introduction of complementary feeding, and whether the appropriate introduction of complementary feeding in infancy is related to tooth decay in toddlers. METHODS The subjects were 1,521 toddlers among 2~3 year old children in the Korea National Health and Nutrition Examination Survey from 2008 to 2015. The toddlers were divided into the appropriate group (4~6 months) and delayed group (>6 months) according to the timing of complementary feeding introduction. RESULTS The delayed group were 26.5% of subjects and the formula feeding period in the appropriate group and delayed group was 8.4 and 10.3 months, respectively (P=0.002). On the other hand, there was no difference in the breastfeeding period between the appropriate group and delayed group (P=0.6955). Early childhood caries was more common in the delayed group (P=0.0065). The delayed introduction of complementary feeding was associated with a risk of early childhood caries according to the logistic models (OR 1.81, 95% CI 1.27–2.57). CONCLUSIONS The introduction of complementary feeding is associated with early childhood caries. Therefore, the importance of the proper introduction of complementary feeding in infancy should be emphasized, and public relations and education for maternal care and breastfeeding should be provided through health care institutions.
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OBJECTIVES This study was conducted to develop and validate Eating Behaviors Test form (EBT) for infants and young children, including eating behaviors of their parents and parental feeding practices. METHODS Draft version of EBT form was developed after a pretest on 83 mothers. It was consisted of 42 questions including 3 components; eating behavior of children, eating behavior of parents, and parental feeding practices. Using these questionnaires, the first survey was conducted on 320 infants and children, 1 to 6 year old, for exploratory factor analysis, and the second survey was collected on 731 infants and children for confirmatory factor analysis. RESULTS Exploratory factor analysis on 42 questions of EBT form resulted in 3 factor model for children's eating behavior, 3 factor model for parents' eating behavior, and 1 factor model for parental feeding practices. Three factors for children's eating behavior could be explained as follows; factor 1, pickiness (reliability alpha=0.89; explanation of variance=27.79), factor 2, over activity (alpha=0.80, explanation of variance=16.51), and factor 3, irregularity (alpha=0.59, explanation of variance=10.01). Three factors for mother's eating behavior could be explained as follows; factor 1,irregularities (alpha=0.73, explanation of variance=21.73), factor 2, pickiness (alpha=0.65, explanation of variance= 20.16), and factor 3, permissiveness (alpha=0.60, explanation of variance=19.13). Confirmatory factor analysis confirmed an acceptance fit for these models. Internal consistencies for these factors were above 0.6. CONCLUSIONS Our results indicated that EBT form is a valid tool to measure comprehensive eating and feeding behaviors for infants and young children.
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This study was done to determine the trans fatty acid (tFA) composition of human milk from postpartum to sixth months after delivery, to investigate the tFA intake of lactating women, and to estimate the intakes of tFA by infants exclusively fed breast milk. A total of 27 lactating Korean women participated to this study voluntarily, gave their breast milk, and responded to an investigation of their diets. The lactating women consumed 2.3-2.8 g/d of tFAs over the period of the first, second, third, and sixth months postpartum, which was 3.4-4.9% of the total fat intake and 0.8%-1.2% of the total energy intake. The proportions of tFAs in the breast milk were 1.89% in colostrum, 1.78% in transitional milk, and 1.78-2.25 in mature milk of the first, second, third, and sixth months postpartum. The tFAs of the breast milk identified in this study were C16:1n9t, C18:1n9t, C18:2n6t12t, C18:2 n6t12c, C18:2n6c12t and C18:2n6t11t. Among them, C18:1n9t was predominant, which made up 59.26% of all tFAs in colostrum, 62.36% in transitional milk, and 64.42% in mature milk. The proportion of total tFA was unchanged with time, although some significant differences were noted for individual tFAs. The percentages of C18:2n6t12c and C18:2n6c12t decreased over the study period. Estimated tFA intake of the exclusively breast-fed infants was 0.18 g/d when fed colostrum, 0.29 g/d when fed transitional milk, and 0.53 g/d when fed mature milk until the sixth month of postpartum. Those were 0.5%, 0.8%, and 1.1% of the total energy intake. The results in this study indicate that lactating Korean women consume not a large quantity of tFAs, secrete breast milk not containing much tFA, and the estimated intake of tFAs by infants fed exclusively breast milk is not great.
The purpose of this study was to determine the characteristics of infants' temperaments and eating behaviors, mothers' eating behaviors and feeding practices in poor eating infants. The participants were 80 infants of 12 - 24 months (27 poor eaters and 53 matched normal controls) from a hospital and a public health center. Mothers were questioned about their eating behaviors and feeding practices, and infants' temperaments, eating behaviors, and nutrient intakes by one day food recall. Subjects were divided by mean nutrient adequacy ratio (MAR, < 0.75; poor eater). Intakes of Ca, P, Fe, Zn, thiamin, riboflavin, niacin, vitamin C, E, folate were below 75% RDA in poor eaters, whereas protein, thiamin, riboflavin, vitamin B6, C, folate exceeded 125% RDA in good eaters. Rhythmicity of infants' temperaments and eating behaviors, restriction of mothers' eating behaviors and feeding practices were significantly lower, whereas activity levels of infants' temperaments were higher than good eaters. In multiple logistic regression model of poor eaters, activity of infants' temperaments (T, OR: 1.19, CI: 1.05 - 1.35) and attention spans of infants' eating behaviors (A, OR: 1.18, CI: 1.03 - 1.35) were significantly positive, whereas rhythmicity of infants' eating behaviors (R, OR: 0.79, CI: 0.67 - 0.94) was significantly negative [E (the logit) = -6.8644 + 0.1712 x T - 0.2337 x R + 0.1641 x A]. Our findings suggest that examination of eating behaviors, feeding practices, and temperaments will help target interventions to improve infants' food intakes, and these variables should be examined at the time of nutrition counseling.
The purpose of this study was to determine the characteristics of infants' temperaments, maternal feeding behaviors and feeding practices in picky eaters. Participants were 83 infants (aged 12 - 24 months) from "A" hospital (Seoul) and "B" public health center (Kyunggido). Mothers completed questionnaires that assessed their own feeding behavior, feeding practices, infants' temperament and infants' feeding behavior. Picky eaters' demographics were not significantly different from non-picky eaters after adjusting sex and age. The average of thiamin, niacin and vitamin E intakes of picky eaters were below 75% Korean RDA, whereas vitamin A intakes exceed 120% RDA in both groups. Activity level of infants' temperament and disinhibition of maternal feeding behavior in picky eaters were significantly higher than those in non-picky eater. All constructs of infants feeding behavior were significantly associated with certain constructs of infants' temperament, maternal feeding practice and maternal feeding behavior. The pickiness of infants feeding behavior was positively correlated with activity level of infants' temperament, pickiness and disinhibition of maternal feeding behavior and negatively correlated with adaptability of infants' temperament. Findings suggest that maternal feeding behavior and feeding practices as well as infants' temperament should be addressed in nutrition education for picky eaters.
The objective of this study was conducted to investigate growth and development status of infants fed soy-based formulas over 3 months. The height and weight were measured and Z-scores were calculated by using standard of the same age groups. Their mothers were interviewed using questionnaires including general and environmental characteristics, total food intakes, soy based formula intakes and Ewha infant development screening test. Main results were as follows: 1) Nutrient intake levels of subjects were similar to or more than the level of Korean Recommended Dietary Allowances except for intakes of vitamin E (79.89% RDA), and the average status of nutrient intakes of infants were fairly good. 2) Z-scores of height for age (HAZ) and Z-scores of weight for age (WAZ), Kaup index, WLI and Ewha Infant Developmental Screening Test score of subjects were in the normal growth range. 3) There were no significant differences among soy based formula intake percentile groups in HAZ, WAZ, Kaup index, WLI and Ewha Infant Developmental Screening Test score. 4) Total energy intake was positively correlated with HAZ (p < 0.01), WAZ (p < 0.01), and WLI (p < 0.05) in infants less than 12 month. Also, soy based formula energy intake was positively correlated with HAZ (p < 0.05) in infants less than 12 month. However, energy and soy based formula intake levels of infants over 12 month were not significant among variables. Considering results of this study, infants fed soy-based formulas over 3 months showed normal growth and development status. Further studies are needed to evaluate long-term growth and development in infants fed soy based formulas.
The aim of this study was to assess the nutrient intakes from infant formula and supplemental foods of 246 healthy infants fed infant formula, aged from 5 to 18 months. Subjects were devided into two groups depending on supplemental food type for weaning, Domestic supplemental foods (mainly home-made, n = 129) and Delivery supplemental foods (mainly commercially-delivered, n = 117). Four subgroups were assigned to 5 - 6 months, 7 - 8 months, 9 - 11 months, and 12 - 18 months by ages, respectively. Dietary assessment was carried out using 24-hour-recall method. Formula intakes in the delivery group tended to decrease accordingly with the ages. However, in the domestic group, formula intakes up to 8 month were similar and decreased after 9 month. Energy, protein, calcium and iron intakes from infant formula and supplemental foods were assessed. Energy intake at 12 - 18 months were lower than the RDA in both groups. Daily intake of protein and calcium at all ages were much higher than the RDA in both groups. Therefore, protein and calcium overnutrition were elucidated. Especially, protein intake at 5 - 6 months, calcium intake at all ages from infant formula was higher than the RDA in both groups. Iron intake at 5 - 6 months from infant formula were higher than the RDA. Consequently, as for infant formula, it was suggested that not only formula intakes but also nutrient content in formula should be reconsidered. On the other hand, nutrient intakes from supplemental foods in the domestic group tended to be higher than that of the delivery group. Especially at 9 - 11 months, significant differences between the two groups were observed. This may be due to high dependency on commercial powdered baby food in the domestic group. This study revealed that daily nutrient intakes of formula-fed infants are desirable but nutrient intakes from infant formula are too high. Conclusively, this study suggests that as the age of infants increases, formula intakes should be controlled and various supplemental foods besides commercially powdered baby food should be appropriately provided.
This study was carried out to investigate the future plan for infant feeding practice and its associated factors among university students so as to develop focus for nutritional education program for the promotion of breastfeeding. The subjects were 301 students (males 130, females 171). The results obtained were as follows. In this survey, the subjects had a basic knowledge of breastfeeding and lactation, especially of the ingredient of breastmilk. However they were not well informed about the physiology and method of breastfeeding and benefits of breastfeeding for mothers. The average scores for attitude toward breastfeeding and lactation were 3.09 points on a 4 point scale, which indicated a slightly positive attitudes toward breastfeeding. However the participants had a negative attitude toward its emotional and practical aspects. Their future plan for infant feeding was breastfeeding 40.3%, formula feeding 3.0% and mixed feeding 56.7%. A concern was that the students showed a high rate with regard to a mixed feeding plan, and they decided this based on an incorrect knowledge of breastfeeding. The group who planned to breastfeed in the future (BF) showed higher scores with respect to knowledge and attitudes than those who planned to formula feed or mixed feed (FF + MF). Therefore, to encourage mothers to breastfeed and support breastfeeding, breastfeeding nutritional education is urgently needed among university students. In addition, nutrition education programs should promote the benefits of breastfeeding for mothers and the physiology and practical method of breastfeeding. Also a practical and culturally sensitive course about food and nutrition is recommended to inform participants about breastfeeding.
Although breastfeeding is recognized to be vital to the health and well-being of children and women, the rate of breastsfeeding among Korean women has continuously decreased. One barrier to breastfeeding has been identified to be associated with health care providers. Health care professionals do not give sufficient advice and encouragement, next do hospitals provide supportive environments for breastfeeding by separating infants from mothers or providing formula. The purpose of this study was to investigate prenatal breastfeeding education and infant feeding practices in public health centers and baby-friendly hospitals. A telephone survey was carried out on 57 public health centers located in the Seoul and Chungcheong areas and 13 baby-freindly hospitals from February to April in 2000. Among the public health centers, 43.8% offered periodic prenatal education for pregnant women who visited the centers. Most of them used leaflets or pamphlets developed by the Ministry of Health and Welfare or UNICEF. Twenty six percent of the public health centers developed their own educational materials. All of the 13 baby-friendly hospitals gave additional fluids to infants, did not allow mothers and infants to stay together 24 hours a day, and did not foster the establishment of breatfeeding support groups among the mothers. Most of the baby-friendly hospitals gave artificial teats, did not help mothers initiate breastfeeding within a half-hour of birth. Findings indicate that current practices even in the baby-friendly hospitals are not consistent with the '10 steps to success breastfeeding'. Therefore, deliberate efforts should be made to incorporate adequate breastfeeding education into prenatal program in both public health centers and hospitals, and create environments to support breastfeeding in hospitals, even in baby-friendly hospitals.
This study was carried out to investigate the present status of nutrition services for infants in public health centers and the need for nutrition services of health workers and infants mothers. The study subjects were 146 health workers and 197 infants mothers. The results were as follows : At present, the only major nutrition services for infants were vaccination and dental care. Proper nutrition management services were available to infants. Nutrition knowledge scores were 16.8 for health workers and 15.3 for mothers out of 20 possible points. Health workers strongly demanded a well-organized nutrition education program, government support, audio-visual materials and the employment of a community nutritionist. The public health workers, in particular, demanded the development of education programs for breastfeeding and weaning. The infants mothers demanded services of nutrition information and teaching of cooking and menu planning. Based on this, the results suggest that the employment of a community nutritionist and the development of practical nutrition service programs for infants are needed very urgently for public health centers.
This study was conducted to investigate the weaning practice of 198 infants in Taejon city in October, 1998. Information on infant feeding and weaning practices were obtained by interviewing mothers in gynecologist and pediatric clinics located in Taejon. The results obtained were as follows : In the survey 37.4% of the infants were breast-feeding, while 31.3% of them were bottle-feeding and 29.3% of them were mixed-feeding. The reason for bottled-feeding was due either to the lack of breast-milk secretion or motner's job. The educational level of the mother and maternal job affected the feeding methods before weaning. Lower rates of breast-feeding were found among mothers witn a lover level of education. The breast-feeding rate was lower in full-time and part-time job worker groups than in housewife. There was no significant difference in the feeding methods according to family income. Among the subjects, 71.5% of infants began to be weaned within 7 months. The onset of weaning was delayed in the full-time worker group. There was no significant difference in the onset time of weaning according to feeding method, the educational level of the mother, and family income. 60.6% of infants received fruit juice and 29.6% of them received cereals for first-given-supplementary food. 'For baby's nutritional status' was the most common motivation for the onset of weaning. Commercially prepared foods were used more than home-made food for supplementary food.
This study was carried out to longitudinally investigate the iron and zinc intakes and correlation with growth performance of 25 male breast-and formula-fed infants from 1 to 3 months postpartum, longitudinally. There were four groups breast fed(BF) and three formula fed groups((FFM, FFN and FFP). Milk intakes and the concentration of iron and zinc from human milk and the formulas were measured. The iron content of human milk was 2.07+/-1.05(0.63~5.65) microgram/ml. The zinc content was 2.43+/-1.14(0.70~5.30) microgram/ml. Both were not significantly different among postpartum months. The average iron intake of the breast-fed and formula-fed infants was 1.6+/-0.7mg/day and 8.4+/-2.3mg/day, respectively. The iron intake of breast-fed infants was higher than previous reports. And that of formula-fed infants was higher than the RDA. The average zinc intake of the breast-fed group was 1.9+/-0.9mg/day and formula-fed infants' was 2.7+/-0.7mg/day, which was higher than the RDA. There was no correlation between these mineral intakes and the growth performance during 1 to 3 postpartyum months. So, extensive studies of the iron content of human milk and wide cross-sectional studies for establishing iron and zinc recommended dietary allowances for infants are needed.
This study compares the growth performance(weight-for-age Z-score, height-for-age Z-score, weight-for-height Z-score) of one- to three-month-old Korean infants(n=232) with the Korean standard(1994) and NCHS reference(1983). The weight-for-age Z-scores(WAZ) by the Korean standard were -2~1,5 for males and -3~1 for females. The NCHS reference, WAZ results were -1~2.5 and -2.5~3.5 for males and females, respectively. The WAZ compared Korean standard showed no subjects with overnutrition. But 1.3% of the infants showed signs of malnutrition. Comparison with NCHS reference revealed that 0.4% of the infants were malnourished and 7.0% of the infants were overnourished. The WAZ of formula-fed infants were distributed higher than breast-fed infants, but that was not significant. The height-for-age Z-score(HAZ) by the Korean standard were -4.5%~1.5% for males and -4~1.5% for females. According to the NCHS reference, HAZ were -2.5%~2.5% and -3~3 for males and females, respectively. When the WAZ was compared with the Korean standard, there was no overnutrition but 16% of the infants showed signs of malnutrition. The NCHS reference, revealed that 6.9% of the infants were malnourished and 1.8% of the infants were ovemourished. The weight-for-height Z-scores(WHZ) by the Korean standard were -2~5 for males and -2.5~5 for females. The NCHS reference WAZ scores were -1~4 and -1.5~4.5 for males and females, respectively. When the WHZ was compared with the Korean standard, 2.2% of infants were malnourished and 19.5% were overnourished. There were no malnourished subjects according to the NCHS reference and 19.1% of the infants were overnourished. When the three Z-scores are considered together, 92.0% of the infants should a normal growth status, there was no malnutrition, and 8.0% of the infants were overnourished. The growth performance was evaluated differently according to the type of standards. Thus, it is necessary to set proper growth standards for infants, according to which classification of feeding methods is chosen. A longterm and careful assessment of infants's growth performances to develop any group of standards.
The purpose of this study was to evaluate the nutritional status and growth of Korean infants, who were atending peripheral community clinics in low income areas, by anthropometric measurements and estimating dietary intakes. Dietary intakes and growth were compared among different feeding patterns of 143 infants until age 9 months. The overall mean nutrient intakes of infants in this study were below the recommended allowances except the calcium intake from significant difference in each groups; however, calcium, zinc and iron intake of the formula fed infant(FF) was higher than the breast fed infant(BF) or the mixed fed infant(MF). Form ages 4-6 months, the nutrient intakes were shown to be higher in groups that were given supplementary foods than groups that were not. From ages 7-9 months, all nutrient intakes were higher in or the formula and supplementary foods fed(ESF) infants than in the breast and supplementary food(BSF) or the formula and supplementary food(FSF) groups, All subjets in this study showed a large Z-score. The growth of infants up to 6 months of age showed no significant difference in the feeding pattern, however, after 7 months of age the BSF group had significantly lower weight than the FSF or the ESF groups, There were significant positive relationships between infants weight gain at age 7-9 months from birth and the current protein or zinc intakes. As a result the average status of nutrient intakes of infants in this area was loser than the RDA, however, the growth pattern was fairly good. Although the breast milk is beneficial for infants, mothers should be educated for the importance of supplemental food and its practice to support good nutrition.
This study was conducted to evaluated the nutrition quality of the commercial supplementary foods for infants and young children and to seek a solution to the establishment of standards of nutrient requirements for supplementary foods in Korea. Information on food ingredients, nutrient contents, claims about usefulness of food components and instructions for feeding preparation were obtained from the labels of 33 commercial supplementary foods manufactured by 4 different domestic companies. According to the standard of supplementary foods for infants and young children described in the Korean Food Code, the commercial supplementary foods were categorized into two different types, weaning food and baby food. All the commercial weaning foods were in powder form and mainly composed of cereals, whereas all the baby foods were mainly composed of fruits in the form of canned juice. The weaning foods contained more nutrients than the baby foods did, and the nutrient levels of the weaning foods expressed as nutrient density on energy basis were higher than the RDA for infants aged 5 to 11 months, suggesting that the commercial weaning foods provide adequate amounts of nutrients. If one followed the instructions for feeding preparation appearing on the label, however, recommended amounts of intake of the weaning foods would provide too much energy as well as nutrients. There were many differences in nutrient standards of weaning foods between the Korean Food Code and Codex international food standard. In conclusion, the establishment of standards for nutrient requirements for the supplementary foods requires significant scientific studies on what nutrients are the most inadequate in Korean infants and young children feeds and what levels of nutrients should be added to the foods in order to supplement their nutrition. In addition, it is very important to have a strong scientific basis to support our standard when discrepancies exist between our standard and the international standard.
The serum concentrations of the major minerals(calcium, phosphorus, magnesium, sodium, potassium) and trace elements(iron, Zinc, copper manganese)were datermined in 23 breast fed infants living in Eumsung, Choong-buk region. The results obtained are summarized as follows: 1)The mean levels of calcium, phosphorus, magnesium, sodium and potassium of the serum of total subjects were 8.15+/-0.33mg/dI, 11.06+/-0.16mg/dI, 2.00+/-0.14mg/dI, 3.4476+/-17.99mg/dI and 9.06+/-2.04mg/dI respectively. 2)The serum concentrations of iron, zinc, copper and manganese in total subjects averaged 95.83+/-0.33mg/dI, 93.79+/-7.06 microgram/dI and 98.57+/-7.06 microgram/dI and 4.93+/-0.62 microgram/dI respecitively. 3)Breast fed infants had significantly higher serum calcim, magnesium, sodium and iron concentrations than the formula fed groups. Otherwise, serum potassium, copper and manganese levels in breast milk fed infants were significantly lower than those in formula fed infants. 4) In formula fed infants, serum potassium and copper levels increased increased significantly with months after birth.
One-to three -month-old infants(n=252) were compared their growth performance(weight, length, head circumference, chest circumference) by feeding methods in cross-sectional study. There were two groups : breast-fed(BF) and formula-fed groups(FF). The weights of infants at 1, 2, and 3 postpartum month were 4.50+/-.48kg, 5.76+/-0.62kg and 6.67+/-0.68kg, respectively. The weigh of male infants was higher than females. The length were 53.7+/-2.6cm, 57.4+/-3.3cm, 61.1+/-3.1cm at one to three postpartum months, respectively. The length of male infants was higher than females, too. Overall there were no significant differences between feeding methods in weight, length, head and chest circumferences, and monthly weight and length velocity. But 3-month-old formula-fed male infants showed bigger significantly in weight, monthly weight velocity and chest circumference than the breast-feds. By Korean standards, weight-for-height Z-score were distributed from 0 to +2. Not only was there a few malnourished infants but also overnourished were noticed, especially in formula-fed group.