• Journal of Community Nutrition
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• 제7권1호
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• pp.49-57
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• 2005

Nutrition factors play an important role in the pathogenesis of osteoporosis. The purpose of this study is to investigate the relationship between nutritional status and bone mineral density of elderly women. Three hundred thirty five elderly women (over 65 years) in Asan were divided into three age groups (group 1, less than 70 y ; group 2, from 70 to 75 y ; group 3, 75 y or more). Total alkaline phosphatase and serum calcium (Ca) were analyzed using spectrophotometric procedure. Data for food and nutrient intakes were obtained by a 24-hour recall method. Bone density was measured by broadband ultrasound attenuation (BUA) using QUS-2. Age differences were tested with the X 2 test for categorical variables and with ANOVA and Tukey's test for continuous variables. Correlation was conducted to test the association between bone density and nutrient intake. The subjects in age groups 1,2 and 3 were $36.7\%$, $32.8\%$ and $30.4\%$, respectively. Height and body weight of the subjects were significantly decreased with age. Average bone density of the subjects in group 3 was lower than the other age groups. Osteoporosis determined by t-score is $17.9\%$ for group 1, $24.5\%$ for group 2 and $55.9\%$ for group 3 (p < 0.001). The serum Ca level of the subjects in group 2 was significantly lower than that of group 1 although mean values in all age groups are within the normal range. Dietary Ca intake, nutrient adequacy ratio (NAR) and index of nutrient quality (INQ) were decreased with age. Bone density was negatively correlated with age (p < 0.001), while body mass index (p < 0.01) was positively related with bone density. Although partial correlation did not reveal the significant correlation of BMD and dietary calcium after controlling for age, since calcium intake was very poor compared to sodium and phosphorous intakes, recommendation of more calcium intake for elderly women especially those over 75 years must be continuously emphasized.

• 한국식생활문화학회지
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• 제29권6호
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• pp.659-667
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• 2014

Fruits are good sources of vitamins, minerals, fiber, and phytochemicals, which are known to reduce serum lipids, oxidative damage, and blood pressure as well as improve blood glucose control. The purpose of this study was to estimate nutrient quality indices of fruits by carrying out a critical analysis of pre-existing methods according to their nutritional compositions. Four methods were used to assess the nutrient indices of 26 fruits, which are frequently consumed by Koreans based on the fourth Korean National Health and Nutrition Examination Survey (2009). Naturally nutrient rich score (NNR), nutrient rich food (NRF), nutrient adequacy score (NAS), and nutrient density score (NDS) were used to calculate nutrient quality indices. The Korean Nutrition Society Food Composition database of fruits based on 100 g edible portions was used. The algorithm of each method included the mean percentage of daily values (Dietary Reference Intakes for Koreans, 2010) for particular nutrients based on consumption of 1,900 kcal/day. The relative score indicated that strawberries, kumquat, and lemon had high nutrient quality indices. In addition, mango, lemon, persimmon, strawberry, apricot, and tangerine fruits are rich in antioxidant nutrients such as ${\beta}$-carotene, vitamin C, vitamin E, and selenium. However, scores of nutrient quality indices did not imply that higher scores of particular fruits are superior. We suggest moderate seasonable consumption a variety of fruits. Our results can be used as a reference for consumers when they choose fruits.

• 한국산림과학회지
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• 제105권3호
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• pp.294-302
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• 2016

본 연구는 경상남도 고성군에 식재된 상록활엽수인 27년생 종가시나무 조림지를 대상으로 고밀도(1,933본/ha)와 저밀도(1,200본/ha)구분한 후 총12본(고밀도 임분 6본, 저밀도 임분 6본)의 표본목을 벌채하고 임목부위별 바이오 매스 추정을 위한 상대생장식과 양분(C, N, P, K, Ca, Mg)축적량을 조사하였다. 흉고직경(DBH)을 독립변수로 하는 임분밀도별 줄기 목질부, 줄기 수피, 가지, 잎, 지상부 총량 등의 바이오매스 추정을 위한 상대생장식의 유의성이 인정되었으며(P < 0.05), 상대생장계수(slope)는 유의적인 차이가 없어 일괄상대생장식의 적용이 가능한 것으로 나타났다. 종가시나무 조림지의 지상부 임목 바이오매스는 고밀도 임분이 177 Mg $ha^{-1}$로, 저밀도 임분 114 Mg $ha^{-1}$에 비해 유의적으로 높았다. 그러나 줄기 목질부, 줄기 수피, 가지, 잎 등의 임목부위별 양분 농도의 경우 임분밀도 따른 유의적인 차이는 없었다(P > 0.05). 임목부위별 양분축적량은 줄기 목질부의 질소 및 인축적량을 제외하고 고밀도 임분과 저밀도 임분 사이에 유의적인 차이는 없었다. 본 연구결과에 따르면 종가시나무 조림지의 임목부위별 양분농도의 경우 바이오매스 축적량에 비해 임분밀도의 영향이 크지 않는 것으로 나타났다.

• 성인간호학회지
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• 제27권1호
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• pp.94-105
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• 2015

Purpose: This study was aimed to investigate the effects of the nutritional intervention program including DASH diet education and calcium/vitamin D supplements in Korean elderly women. Methods: This was a quasi-experimental study employing non-equivalent control group pretest-posttest design. The experimental group (n=26) was given DASH diet education and supplements (calcium 1200mg and vitamin 800 IU) while the control group (n=16) was given only general health consults. After the interventions, differences were analyzed in nutrient intake, bone turnover markers and bone mineral density between the two groups. Results: After one year, bone mineral density was found reduced in both groups, but showed higher levels (p=.003) in the experimental group than the control group. After research, nutrient intakes of participants improved generally, yet there was no significant difference between the two groups. The experimental group was divided into subgroups after interventions according to the level of calcium intake, and bone density and bone markers were compared between the subgroups. In a subgroup whose calcium intake was in the normal range, bone mineral density was significantly high (p=.002) while CTx and osteocalcin were significantly low (p=.003, p=.006, respectively). Conclusion: This study is significant in that it provided a nutritional intervention program for one year to elderly women who are susceptible to osteoporosis and severely low in dietary calcium intake and it proved to be effective.

• 한국식생활문화학회지
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• 제17권5호
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• pp.584-593
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• 2002

The purpose of this study was to evaluate the diet quality of the menus delivered by 17 free meal service centers for the low-income home-bound elderly in Chung- cheong buk-Do. Statistical data analysis was compleleted using the SPSS package program for descriptive analysis, T-test, and ANOVA. The meals offered by free meal service centers were not met the 1/3 recommended dietary allowances in calcium and vitamin $B_2$. There were significant differences between dependent variables(nutrient content, nutrient density, nutrient deficiency, NAR, MAR, food group intake patterns) and independent variables (operation type, operation status, operation period, nutritionist, food cost).

• Preventive Nutrition and Food Science
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• 제14권3호
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• pp.208-213
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• 2009

The achievement of maximal peak bone mineral density (BMD) in early life is one of the most important strategies for the prevention of osteoporosis, which is affected by nutritional status. However, it has been reported that young Korean women do not consume the optimal levels of nutrients because of the frequent practice of body weight reduction. Therefore, this study was conducted to investigate the relationship between nutrient intakes and BMD in young Korean women. Bone mineral density was measured at the lumbar spine by dual-energy X-ray absorptiometry. Information on health status, lifestyle and physical activity was obtained by questionnaire. Dietary intake was ascertained from a 3-day dietary record. The study sample included 112 Korean women aged 20$\sim$39 yr. In accordance with the energy intake of subjects, individuals who had an energy intake that was greater than 80% of the Korean Dietary Reference Intake (KDRI) were assigned to the control group (Control), while those who had an energy intake lower than 80% of the KDRI were assigned to the low intake group (LI). The intake of all nutrients in the LI group was significantly lower than that of the Control. Control subjects also showed nutrient intakes higher than the KDRI, except for Ca and folate. However, LI subjects showed intakes of energy, fiber, Ca, Fe, K, Zn, vitamin A, vitamin B1, vitamin B2 and folate that were lower than the KDRI. The BMD of the lumbar spine in LI subjects was significantly lower than that of the Control subjects. These results suggested that lower nutrient intake has a negative impact on BMD in young women.

• The Korean Journal of Ecology
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• 제9권1호
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• pp.73-78
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• 1986

The effects of density and soil nutrient regime on competition between individuals in pure and mixed populations of two annuals. Chenopodium album and Digitaria sanguinalis were investigated at the level of enegy allocation. Seedling emergence of two species was extremely high (>90%) in both pure and mixed culture irrespective of the density and nutrient regime, but percentage of seedling establishment or fertile plant became gradually low with increasing density owing to 'self-thinning'. The mean plant dry weight was significantly reduced with increasing density and decreasing soil fertility. The dry matter production of D. sanguinalis in mixture was markedly greater than in pure culture under medium and high density. Also, as considered the number of seed production as reproductive allocation, relationship between them and the number of seed production per plant showed a similar tendency. Therefore, these results indicated that D. sanguinalis had a greater competitive advantage than C. album and energy allocations to variious organs were regulated by plastic response rather than determined genetically.

• Journal of the korean society of oceanography
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• 제38권2호
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• pp.68-79
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• 2003

Although seagrasses are relatively abundant, few studies have been conducted on seagrass physiology and ecology in Korea. Zostera marina is the most abundant seagrass species, widely distributed throughout all coastal areas of the Korean peninsula. To examine seasonal dynamics and spatial variations of eelgrass, Zostera marina distributed on the coast of Korea, morphological characteristics, biomass, tissue nutrient constituents, leaf productivity and environmental factors were monitored monthly from the eelgrass beds in Kabae Bay and Kosung Bay on the south coast of the Korean peninsula from June 2001 to June 2002. Eelgrass density, biomass, morphological characteristics, leaf productivities, and tissue nutrient constituents exhibited clear seasonal variations, and these seasonal trends reflected seasonal changes in water temperature. Eelgrass shoot density and biomass at Kabae Bay site showed more obvious seasonal trends than Kosung Bay. No strong seasonality in Kosung Bay site appeared to be caused by high water temperature ($>30{\circ}C$) during summer months at this site. Despite differences in nutrient availabilities between two study sites, eelgrass biomass and leaf productivities were not significantly different between study sites, and this lack of spatial variations implies that the ambient nutrient availabilities at the present study sites are in excess of seagrass nutrient demand. Eelgrass tissue N content and sediment pore water DIN concentrations exhibited reverse relationship at the present study. This reverse relationship suggests in situ nutrient concentrations are not good indicator of nutrient availabilities, and regeneration and turnover rates of sediment nutrients are also important factors to determine nutrient availabilities at the site.

• 한국식생활문화학회지
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• 제14권4호
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• pp.319-331
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• 1999

This nutritional survey was conducted in February 25, 1999, in order to investigate the nutritional knowledge, dietary attitudes and nutrient intakes of dietitians living in Kangwon area. Subjects consisted of 250 dietitians, with 184 in school food service, 14 in hospital food service and 52 in institution food service. Data were analyzed for frequencies, means, t-test, $x^2$-test, ANOVA and Pearson correlation using SPSS PC Package. The results obtained are summarized as follows: The average nutritional knowledge score was 10.15 out of possible 15 points, and dietary attitude score was 67.93 out of 100 points. The correlation between nutritional knowledge score and dietary attitude score was lowly(${\gamma}=-0.25$). Nutrients consumed below the Korean RDA were energy (78.77%), Ca(90.5%), Fe(83.70%) and nutrients consumed above the Korean RDA were protein(110.83%), P(140.21%), vit.A(163.94%), $vit.B_2$(126.37%), niacin(121.12%) and vit C(231.86%). Carbohydrate, protein and fat ratio on energy composition was 63%:17%:20%. The nutrient density among 3 groups of dietitian was not significantly different.

• Journal of Nutrition and Health
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• 제23권5호
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• pp.309-316
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• 1990

식품 섭취의 다양성과 영양소 섭취 수준간의 관련성을 알아본 결과 다음과 같은 결론을 얻었다. 식품 섭취의 다양성은 대체적으로 열량이나 단백질이 켰으며 비타민 A와 C는 다양성이 적은 것으로 나타났다 식품 섭취의 다양성과 영양소 섭취 수준과의 관련성을 각 영양소의 섭취 수준에 따라 Quartile로 나누어 분석해 본 결과, 영양소의 섭취 수준이 증가함에 따라 대체적으로 섭취한 식품의 수도 증가하는 경향을 보이나 칼슘, 철분, 비타민 $B_1$, 나이아신, 비타민 C는 예외를 가지는 경우도 관찰되었다. Shannon & Weaver's diversity index는 섭취 수준에 따라 다양성의 증가가 일관된 양상을 보이지 않았다. 따라서 영양소 섭취 수준을 측정하는데 지방과 같은 영양소는 섭취한 식품의 종류수가 유용하며 칼슘과 같은 영양소는 Nutrient-specific diet diversity index를 이용하여 측정해야 하는 것으로 보인다. 또한 영양소 섭취 수준에 따라 열량 섭취(예외 : 비타민 A, C)와 식이 영양 밀도도 높았다. 지방과 같은 영양소는 열량 섭취 증가가 그 영양소 섭취 수준의 증가를 더 중요하게 설명해 주며 비타민 A와 같은 영양소는 식이 영양 밀도가 이러한 영양소의 섭취 수준에 더 중요하게 작용하는 것으로 나타났다. 이상의 연구 결과에서 제언하는 바 더 폭 넓은 대상을 중심으로 여러 계절에 걸친 조사의 뒷받침하에 균형식을 이루기 위한 일반적인 식품 섭취의 다양성 정도를 제시할 수 있으리라고 사료된다. 또한 본 연구에서 는 섭취한 식품의 종류수와 Shannon & Weaver's diversity index를 사용하여 식품섭취의 다양성을 분석하였는데 모든 집단 및 모든 영양소에 대해 적용 가능한 신뢰성있는 식품섭취의 다양성을 나타내는 지표에 대한 연구가 계속 이루어져야 할 것이다.