• 한국산림과학회지
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• 제111권4호
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• pp.630-643
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• 2022

본 연구는 소나무의 생중량 및 건중량 추정식을 도출하고, 이를 이용하여 중량표를 작성하기 위해 수행되었다. 생중량 및 건중량을 산정하기 위해 이용한 식은 흉고직경만을 이용하는 1변수식, 흉고직경과 수고를 이용하는 2변수식을 적용하였다. 생중량 및 건중량을 산정하기 위해 각 식은 적합도 지수, 표준오차, 잔차도 등의 통계량을 이용하여 검증하였다. 또한 최적식은 통계적 검증을 거쳤으며, 도출된 계수로서 중량을 계산하여 적용성을 검토하였다. 분석결과, 1변수식에서는 W = bD+cD²이 선정되었으며, 2변수식에서는 때 W = aD^bH^c가 선정이 되었다. 1변수 최적추정식의 적합도지수는 0.87~0.92 범위였으며, 2변수 중량추정식 적합도지수는 0.94~0.98 범위로, 두 가지 식 모두 적합도가 높았다. 최적 추정식을 이용하여 새로운 중량표를 작성하고 이전 중량표와 비교 분석하였다. 분석결과, 강원지방소나무는 이전 중량표의 값이 더 높은 반면, 중부지방소나무는 새롭게 작성된 중량표의 값이 더 높았다.

• Journal of Nutrition and Health
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• 제55권5호
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• pp.572-586
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• 2022

본 연구는 미숙아의 체중을 추적 조사하여 성장곡선 체중 z-score 값으로 성장 상태를 확인하고 관련 요인을 탐색하기 위한 종단적 연구이다. 출생 체중, 재태연령, 출생 시 NICU에서의 의료적 처치 (CPR, 산소치료, 위장관 삽관), NICU 입원 기간 및 퇴원연령, 수유 문제, 일일 추정 수유량이 체중 성장에 유의하게 영향을 가지는 것이 확인되었다. 출생 체중과 연령이 적은 그룹이 유의하게 초기 성장 정도가 더 낮았으나 교정연령 3개월 이후부터 12개월까지의 체중에 차이가 없었다. 하지만 재태연령 40주 이후의 연령-체중 z-score가 평균 이하인 그룹이 출생 체중이 유의하게 낮은 것으로 보아 장기적인 성장에 출생체중이 영향을 미치는 것으로 보인다. 또한 NICU에서 의료적 처치를 받고 NICU 입원 기간이 긴 경우 성장곡선의 50 백분율 이하로 성장에 유의한 차이가 있었고, 퇴원 후 2개월간 수유과정 중 문제가 없으며 더 많은 양을 섭취한 그룹이 성장곡선에서 더 상위에 있었으며 더 잘 자랐다. 또한 NICU 퇴원 후 가정에서 자녀가 초기보다 하향 성장을 하고 있을 때, 외부의 도움 및 커뮤니티 케어를 필요로 하므로 미숙아 성장 지원을 위하여 커뮤니티 케어 도입의 필요성을 시사하였다. 본 연구 결과를 통하여 미숙아의 출생 체중 및 연령, NICU에서의 처치는 초기의 체중 성장에 영향을 끼치며, 재태연령 40주 이후의 성장 증진과 성장지연 위험을 감소시키기 위해서 올바른 섭취를 통한 원활한 영양공급이 중요함을 알 수 있다. 미숙아 성장 추적은 NICU 퇴원 후에도 지속되어야 하며 성장 증진 관련 변수, 특히 영양 지원에 적극적인 개입과 지지가 필요하다.

• 한국융합학회논문지
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• 제9권4호
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• pp.313-320
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• 2018

본 연구는 주관적 체형 인식이 체중 조절 행태와 체중 변화에 미치는 영향에 관하여 규명하고, 바른 정보와 교육의 필요성을 제시 하기위해 시행 되었다. 제6기(2013-2015년) 국민건강영양조사 원시자료를 활용하여 체질 량 지수가 $18.5-25kg/m^2$ 인 만 19세 이상 성인 여성 6,238명을 대상으로 분석한 결과, 교육 수준과 소득 수준이 높을수록 자신을 비만으로 인식하고 있었으며 전체 조사대상자에서, 체중 감소를 위해 운동과 식사량 감소를 가장 많이 선택하고 있었다. 체중 감소 노력 비율은 비만 체형 인식 군이 높았으나, 1년간 체중 변화에서 마름 체형 인식 군이 가장 높은 체중 감소 결과를 보였다(p< .001). 결과적으로, 주관적 체형 인식이 체중 조절 행태 뿐 만 아니라 체중 변화에도 영향을 미치고 있었다(p< .001). 따라서 건강한 체중 조절 행태에 대한 교육과 바른 신체 이미지, 건강한 체형인식에 대한 교육이 체계적으로 이루어져야 할 것이다.

• 한국건축시공학회지
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• 제8권6호
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• pp.131-137
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• 2008

In recent years, the light-weight aggregate has widely been used to reduce the weight of construction structures, and to achieve the thermal insulation of building structures. The purpose of this study is to evaluate the heat resistance of polymer concrete composites with light-weight aggregate made by binders as resin and cement with polymer dispersion. The light-weight polymer concrete composites are prepared with various conditions such as binder content, filler content, void-filling ratio, light-weight aggregate content and polymer-cement ratio, and tested for heat resistant test, and measured the weight reducing ratio, strengths and exhaustion content of gas such as CO, NO and $SO_2$. From the test results, the weight reducing ratio of light weight polymer concrete using UP binder after heat resistance test increase with an increase in the UP content irrespective of the filler content. The weight reducing ratio of polymer cement concrete is considerably smaller than that of UP concrete. In general, the strengths after heat resistance of polymer concrete composites are reduced about 40 to 65% compared with those before test. The exhausted quantity of CO, NO and $SO_2$ gases in polymer concrete composites is less than EPS(Expanded poly styrene). From the this study, it is confirmed that the many types gases discharge according to binder type of polymer concrete composites, its amount is controlled by selection of the binder type and mix proportions.

• 대한지역사회영양학회지
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• 제10권5호
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• pp.623-632
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• 2005

This study was intended to collect the baseline information on dietary behavior of adults to develop nutrition education program in the context of healthy weights at community level. Nutrient intakes of 128 housewives were assessed by 24 hour recall method. Also food habits, nutrition knowledge and attitude were investigated by self-administered questionnaires. Subjects were divided to under-weight, normal-weight, over-weight groups by body mass index (BMI). Most under-weight groups evaluated as their current body images were normal. $41\%$ of normal-weight groups judged as their current body images were obese. Energy and fat intakes of over-weight group were significantly higher than that of under-weight and normal weight groups (p<0.05). However, carbohydrate and protein intakes showed no significant differences among the three groups. It appeared that active attitude toward change in nutrition attitude of normal weight group was significantly higher than that of under-weight group (p<0.05). There were no significant differences of food habit score, nutrition knowledge, and obesity habit scores among the three groups. The frequency of eating-out showed significant difference among three groups (p<0.05). Food habit scores were positively related to health-concerned attitude (r=0.174), convenience-concerned attitude (r=0.229) and food enjoyed attitude (0.213) and negatively related to obesity habit score (r=-0.206). Also, positive correlation of body fat mass with frequency of eatingout (r=0.213), instant food (r=0.227) and amount of meal (r=0.187) existed (p<0.05). We concluded that nutrition education programs for housewives should include specific strategies to modify unsound food behaviors and inappropriate perception of body image for a healthy weight.

• 대한지역사회영양학회지
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• 제10권6호
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• pp.805-813
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• 2005

Concern about body weight among adolescents is too much, so distorted body images and weight control are serious problems among Korean girl students. This study was carried out to investigate perception of body images, weight control, food habits and eating behavior of 237 high school girl students in Seoul and Incheon. The subjects were divided into four groups based on Body Mass Index (BMI)-under weight ($21.3\%$), normal ($62.6\%$), over weight ($8.1\%$) and obesity ($8.1\%$). The survey was conducted from June to July 2005. The mean weight, length and BMI of the subjects was $53.4\pm7.4\;g,\;101\pm4.8\;cm,\;and\;20.6\pm2.7$, respectively. $56\%$ of the under weight group and $40.8\%$ of normal group had incorrect perception about their body images and $28.5\%$ of the under weight group and $76.9\%$ of the normal group had dissatisfaction about their body images. Most of the students were concerned about their body images and weight control. Dietary habit scores showed significant differences among the groups. These results suggested that effective nutritional programs should be developed including correct Perception of body image and good dietary habits. (Korean J Community Nutrition 10(6) : $805\∼813$, 2005)

• 대한지역사회영양학회지
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• 제15권1호
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• pp.73-82
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• 2010

This study was conducted to investigate the effects of a weight control programs on BMI, nutrition knowledge, physical fitness and stress level of adult obese women. The subjects of this study were 36 adult obese women aged 30-65 years whose BMI were above $23\;kg/m^2$. The weight control program for obese women included nutritional education, exercise and cognitive behavioral therapy for 12 weeks. The BMI of the subjects was significantly decreased (p < 0.001) from $27.1\;kg/m^2$ to $26.4\;kg/m^2$ after the 12 weeks of the weight control program. In addition, the weight of body fat was significantly decreased (p < 0.001) and % body fat was significantly decreased (p < 0.05) from 35.4% to 34.9% after completion of the weight control program. In addition, nutritional knowledge (p < 0.001) and eating behavior scores (p < 0.01) were significantly increased. However, the food intake scores were not changed after the program. Stress levels of the adult obese women were significantly decreased (p < 0.001) from 85.63 to 66.88 and also obesity stress levels were significantly decreased (p < 0.01) after the weight control program. In the physical fitness levels of the subjects, muscle endurance (p < 0.05) and ability of balance (p < 0.01) were significantly improved after completion of the weight control program. There were positive significant correlations between general stress and obesity stress level (p < 0.05), and negative correlations between stress level and food intake score (p < 0.05). These results showed that the weight control program for adult obese women may be effectively used to improve weight reduction, physical fitness and stress levels.

• 대한지역사회영양학회지
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• 제14권4호
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• pp.374-382
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• 2009

Young adults are likely to start a new life style which may cause weight gain or obesity since leaving their parents for higher education or university. Whilst young people are slim in general, it is common to see them trying to manage their weight. Few studies have been carried out in Korea to support those changes in lifestyle that can result in weight gain in early adulthood. This study aims to identify prevalence of dieting as well as factors inducing weight gain among university students under unrestricted living conditions. A total of 99 university students were enrolled and asked to complete a questionnaire over a 3-day study period from June to September, 2008. T-test and $X^2$-test were applied to compare each behavior between weight gainers and maintainers. Logistic regression was also used for further analysis. Half of the participants used 'eat less' and 'exercise' as a way of dieting, and weight gainers tried to control their weight significantly more than weight maintainers. Most participants were engaged in very little exercise and were more likely to watch TV and use a computer. The time of lunch was proven as the only factor to predict weight change in the participants. As a result of this study, an intervention to promote exercise with friends or as a group is required to makeup for the lack of exercise among young adults. Further studies are also necessary to investigate how each meal time a day relates to the amount of food eaten. (Korean J Community Nutrition 14(4) : $374{\sim}382$, 2009)

• Journal of Korean Biological Nursing Science
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• 제22권2호
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• pp.119-126
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• 2020

Purpose:Weight gain after kidney transplantation is a critical factor that can lead to poor outcomes with cardiovascular complications. Many studies have been conducted to identify predictive markers of future weight changes at the time of transplant. Recently, circulating exosomes and its contents including miRNAs and proteins have attracted attention as potential biomarkers. In this pilot study, we investigated exosomal proteins and weight change after kidney transplant. Methods: Recipients (n = 10) were classified into two groups; weight gainers (n = 5, 9.7 ± 4.4kg) and weight losers (n = 5, -6.4 ± 1.8kg) based on their weight changes at 12-months posttransplant. Based on the exosomal protein profiles obtained by the LC-MS/MS, differentially expressed proteins were identified between the groups. Results: Concentration and the mean size of exosomes significantly increased at 12-months compared to the baseline (p= .009) in the total group. Eleven exosomal proteins were found at the baseline as differentially expressed between the two groups. In the weight gain group, complement proteins including HV169, C3, C4B, and C4A, were significantly upregulated. Conclusion: Our pilot study suggests that exosomal complementary proteins are associated with weight gain after kidney transplantation. Further studies are needed to clarify the role of these exosomal proteins in the underlying mechanisms of weight changes in kidney transplant recipients.

• Journal of Nutrition and Health
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• 제28권8호
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• pp.759-770
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• 1995

This study was conducted to investigate the effect of weight control by use of commercial formula diet and nutrition education on 36 obese women over a period of 6 months. During the study it motivated ways for women to control their weight and improve their health, thus analyzing variables that influence weight control. To help weight control, for the first 3 weeks, along with 1 regular mea, 2-3 liquid formula diets of 135㎉ per pack a day were provided within the 1,200-800㎉ range. For 6 months since then, all 3 meals were taken regularly and it was recommended that energy which is 500㎉ less than energy requirement be taken. To evaluate the effect of weight change by the weight control program, anthropometric measurements, biochemicl parameter, and food behavior are measured. The mean body mass index(BMI) was 30.1$\pm$3.8(25.0-43.6) and it was in the upper 5 percentile of the mean BMI of Korean women. The percent of body fat was significantly reduced from 29.1$\pm$2.4 to 26.4$\pm$2.3, showing that the weight control program induced not only a change in weight but also a change in body composition. The body circumference such as waist and hip circumference and skinfold thickness measurements of biceps, triceps, subscapular and surprailiac were reduced significantly, but the mean waist-to-hip ratio didn't change. Singnificantly improved food behavior score measured by the questionnaire indicated that the weight-contorl program induced the change of the food behavior, as well. Weight loss also induced biochemical parameters of the subject, thus total cholesterol, LDL-Cholesterol, and triglycerol which were in the high range of the normal values were reduced to 20.2%(p<0.01), 22.2%(p<0.01), 25.8%(p<0.01), repectively. HDL-cholesterol didn't change significantly, but the ratio of HDL to total cholesterol increased(p<0.01).