• Journal of Nutrition and Health
• /
• 제50권6호
• /
• pp.578-584
• /
• 2017

Purpose: Excess intake of sodium is a major diet-related risk factor for human diseases including hypertension and cancer as well as obesity and inflammation. However, findings are still controversial, and evidence is lacking in Koreans. Therefore, for better understanding of the role of dietary sodium intake in disease etiology, this study investigated the effects of dietary sodium intake on adiposity, inflammation, and hormones in Koreans. Methods: A total of 80 males and females joined the study. The general characteristics and dietary intake data were investigated by trained interviewers using a questionnaire and 24-h dietary recall, respectively. For the markers of adiposity, body weight, body mass index, percent of body fat, visceral fat area, and waist and hip circumference were measured. For the inflammation and hormone markers, leptin, adiponectin, insulin, tumor necrosis $factor-{\alpha}$, and interleukin-6 were also analyzed. Results: Multivariate linear regression analyses suggested that dietary sodium intake was not associated with adiposity. However, dietary sodium showed a significant association with insulin level: Plasma insulin concentration increased with sodium intake independent of other dietary intake or percent of body fat (${\beta}=0.296$, adjusted $r^2=0.276$, p < 0.01). Other markers for inflammation and hormonal responses were not associated with dietary sodium intake. Conclusion: Findings suggested that dietary sodium intake may be a critical modifying factor in the level of plasma insulin. However, it showed a limited effect on obesity and other inflammation markers and hormone levels. These findings should be confirmed in larger, well-designed investigations.

• Nutrition Research and Practice
• /
• 제5권2호
• /
• pp.150-156
• /
• 2011

Few studies have shown the correlation between metabolic syndrome and bone mineral density (BMD). The main pathogenic mechanisms of metabolic syndrome rely on chronic low-level inflammatory status and oxidative stress. There are few studies that examine the gender-specific effects of inflammation and antioxidants on BMD. In this study, we evaluated the relative contribution of these factors in patients with metabolic syndrome. We conducted a cross-sectional study of 67 men and 46 postmenopausal women with metabolic syndrome; metabolic syndrome was defined as having three or more metabolic syndrome risk factors. BMD, body fat mass, and lean body mass were evaluated. We also examined the levels of high sensitive C-reactive protein (hs-CRP), interleukin-6 (IL-6), adiponectin, vitamin E, and C in serum. Log-transformed hs-CRP levels were significantly higher in lumbar spine osteoporotic subjects than in normal subjects for women but not for men. There was no significant difference between the normal group and the osteoporotic group in other inflammatory markers. Stepwise regression analyses for BMD of the lumbar spine showed that lean body mass and vitamin E were significant determinants in men. Lean body mass and log-transformed hs-CRP were significant determinants in women Analysis for BMD of the femoral neck showed that lean body mass was a significant determinant for both men and women. There was no significant factor among the inflammatory markers or antioxidant vitamins affecting the femoral neck BMD for either gender. In conclusion, while hs-CRP is an independent predictor of the BMD of the lumbar spine in women, vitamin E showed profound effects on BMD in men but not women with metabolic syndrome.

• 한국정밀공학회지
• /
• 제20권8호
• /
• pp.115-125
• /
• 2003

To analyze the applications of all types of mechanical systems, general purpose analysis programs have been developed and commercialized. However, it is customary to develop and use customized programs even though they sometimes require more work than a general purpose program. A customized program is simplified to adapt to a particular application from the beginning, is designed for small computers, and developed with hardware-in-the-loop in mind so it can be applied effectively. By adding design knowledge and bundling know-how to an analysis program, analysis time can be reduced. And because an analysis has to work in conjunction with other analysis programs, a proprietary program that the user can easily modify can be useful. In this thesis, a multi-body dynamics analysis system is presented using one of the most useful programming techniques, object-oriented concept. The object-oriented concept defines a problem from the physical world as an abstract object, an abstract model. The object becomes encapsulated with the data and method. Simulation is performed using the object's interface. It is then possible for the user and the developer to modify and upgrade the program without having particular knowledge of the analysis program. The method presented in this thesis has the following advantages. Since the mechanical components of the multi-body system converts independent modeling into a class, the modification, exchange, distribution, and reuse of elements are increased. It becomes easier to employ a new analysis method and interface with other S/W and H/W systems. To employ a new analysis method, there is no need to modify elements of the main solver and the Library. In addition, information can be communicated to each object through messaging. It makes the modeling of new elements easier using inheritance. When developing a S/W for the computer simulation of physical system, it is reasonable to use object-oriented modeling. Also, for multi-body dynamics analysis, it is possible to develop a solver that is user-oriented.

• 한국의류학회지
• /
• 제44권1호
• /
• pp.84-95
• /
• 2020

Wearing ease is a critical factor when designing special uniforms such as flight pilot's garment and should reflect occupational properties for better performance. This study measured skin surface on 31 areas in seven postures that refer to the pilot's occupational postures as well as made six prediction models including linear mixed model (LMM) for each body part to find the best fit model. Skin surface measured from 3D body scanned images of 11 male pilot participants. There were significantly positive and negative changes in various areas from standing posture (P1) to dynamic postures (P2-P7). Six models were designed in various compositions using stature and chest circumference as fixed effects and subject and posture as random effects. The best models were linear mixed models with one fixed effect (chest circumference or stature, varies with body parts) and two random effects (subject and posture). The results of this study provide reference data to set wearing ease for pilot's garment and suggests a new methodology in this research area, but verifying the effect of diverse independent variables is left for future studies.

• 동의신경정신과학회지
• /
• 제23권3호
• /
• pp.47-62
• /
• 2012

Objectives : This study is to figure the relations of the heart rate variability, body component analysis and accompanying symptoms of 350 insomnia patients. Methods : For this study we evaluated Heart Rate Variability(HRV) and body component analysis on 350 insomnia patients who visited Dongeui oriental hospital of Dongeui university from January 2008 to March 2012. The accompanying symptoms was collected based on each patient's progress note. Results : 1. There was no difference between PR, LF and VLF of male and female groups. HF was higher in the patients' of female group and LF/HF ratio was higher in the male group. The patients' group of age under 39 had higher HF, LF, VLF and LF/HF ratio than the group over 39. 2. The average of LF was the smallest, and the average of VLF was in the middle, while the average of HF was the largest. 3. Regarding patients' age and gender, as the patients' age increased, their HF, LF, VLF and LF/HF ratio decreased significantly. HF, LF, VLF, and LF/HF ratios were, however, independent on the patients' gender. As the patients' age increased, their BMI increased, while the patients' gender did not affect on their BMI. The amount of visceral fat increased with the patients' age, but wasn't dependent on the patients' gender. 4. As the patients' BMI increased, PR and LF decreased. As the patients' amount of visceral fat increased, PR, HF, LF and VLF decreased. 5. The most frequent accompanying symptoms of the insomnia patients was headache. Neither HF nor LF/HF ratio was dependant on any of the accompanying symptoms. Patients with anxiety showed significantly higher LF than those without anxiety. Patients with fatigue and physical pain showed significantly higher VLF than those without either of them. Conclusions : The study showed that as the insomnia patients age increased, the HF, LF, VLF, LF/HF ratio significantly decreased, but the BMI and visceral fat increased. The HF, LF, VLF, LF/HF ratio BMI, or the visceral fat was independent on the gender. As BMI increased, PR and LF decreased. As visceral fat increased, PR HF, LF and VLF decreased. Patients presenting anxiety had higher LF. Patients either with fatigue or physical pain had higher VLF. Neither HF nor LF/HF ratio had any significant correlation with any of the accompanying symptoms.

• 국제물리치료학회지
• /
• 제5권1호
• /
• pp.661-667
• /
• 2014

This study is a cross-sectional study for conscripts with chronic low back pain, where it is designed to investigate general characteristics that conscripts with chronic low back pain carry, and it is also aimed to analyze the correlation as well as discrepancy within pain, depression and body mass index depending on their ranks. In this study, 90 Korean conscripts with chronic low back pain participated. And in order to analyze general characteristics as well as pain, depression and body mass index of the subjects, this study adopted a survey questionnaire upon general characteristics, and it also employed Visual Analogue Scacle(VAS) and Center for Epidemiological Studies Depression(CES-D) Scale which have proven their credibility, where BMI values for the subjects were calculated based on 'Asian Pacific standard' Body Mass Index(BMI). From the general characteristics exhibited by the subjects through this study, average age and average height of the subjects were $20.78{\pm}1.41$ and $175.97{\pm}5.34$ respectively; and corporals displayed the highest ratio of 42% with the chronic low back pain while 40% of the total subjects experienced the duration of the illness less than 6 to 9 months. Moreover, 57.8% of all subjects were reportedly suffering moderate pain, and 48% exhibited depression while 49% carried BMI value between 18.5 and $22.9kg/m^2$(normal range). Based on the analysis of correlation among pain, depression, discrepancy of BMI depending on the ranks and each independent variable, it appears that there is no significant difference amongst the ranks, and there is no correlation between independent variables; however, it was obvious that all groups divided by the ranks had a moderate pain(45-74mm), depression(${\geq}16$) and BMI value in normal range(18.5-22.9).

• 한국균학회지
• /
• 제38권1호
• /
• pp.69-74
• /
• 2010

세균갈색무늬병 병원균의 접종에 의해 심한 병징을 보이는 느타리 균주와 매우 약한 병징을 보이는 균주를 모균주로 선발하고, 각각의 모균주로부터 얻은 단핵균주의 교배를 통해 F1 교잡균주를 얻었다. 세균갈색무늬병 발병도가 다른 11개의 F1균주와 모균주의 자실체 표면의 소수성과 발병도를 조사하였다. 발병도와 소수성 사이의 상관계수는 2번의 독립된 실험에서 각각 0.68과 070이었다. 자실체의 발병도와 버섯재배사에서 조사한 발병율 사이의 상관계수는 각각 046과 0.52이었다. GFP을 발현시킨 Pseudomonas tolaasii을 자실체표면에 접종 후 공초점현미경으로 관찰한 결과 발병도가 낮은 균주의 자실체 표면에서보다 높은 균주의 자실체 표면에서 보다 많은 세균의 집단화가 관찰되었는데, 이 결과는 발병도가 높은 균주의 갓 표면에서 더많은 세균이 증식하였음을 의미한다. 이상의 결과는 느타리 자실체 표면의 소수성이 세균갈색무늬병 발병도에 영향을 미치는 것을 암시한다. 즉 세균현탁액 방울이 갓 표면에 오래 유지되면 더 심한 병징이 형성된다.

• 트랜스-
• /
• 제12권
• /
• pp.1-19
• /
• 2022

본 연구는 기계에 의한 안무가 시작된 오늘날 인공지능이 무용예술에 가져올 변화를 예측하고 문제를 제기하며 인간예술가로서 우리가 할 수 있는 질문을 찾는 시론적 성격을 지닌다. 연구는 기계창작예술 시대에서 무용이 처할 수 있는 위기 중 하나로 인공지능이 인간 안무가의 도구에 머무는 것이 아니라 안무의 주체가 됨으로써 인간 무용수를 조종하고 제한하는 힘을 갖게 되는 것임을 안무의 정치 담론을 토대로 제시한다. 이는 인공지능이 안무의 영역을 장악하고, 인간 안무가는 무능한 관조자에 머물게 됨으로써 결과적으로 무용수의 춤추는 몸은 인공지능에 의해 통제되고 조종되는 기계적인 몸으로 전락하게 될 수 있다는 위기의식에서 비롯한다. 이러한 우려가 현실이 되지 않기 위해서, 본 연구는 세 가지의 방안을 제안한다. 첫째, 안무가 및 무용수는 인공지능 예술 시대를 살아가기 위한 디지털 리터러시 역량을 키워야하며 둘째, 안무가는 창작 작업에 있어 인간 안무가와 무용수, 그리고 인공지능의 역할을 정확히 구분하는 능력을 획득해야 하고 셋째, 무용과 기술의 상호매체적 연구가 활발하게 수행됨으로써 인공지능 무용에 관한 다양한 층위의 담론이 형성되어야 한다. 이러한 노력들을 통해 인간 무용가는 인공지능 기술의 혁신이 불러올 새로운 무용 생태계에서 수동적인 관조자가 아닌 예술의 주체로 존재하며 인공지능과 창의적이고 생산적으로 공존하는 시대를 맞이할 수 있을 것이다.

• 한국산학기술학회논문지
• /
• 제20권11호
• /
• pp.56-65
• /
• 2019

본 연구는 12주간 여성노인이 체중을 이용한 복합운동(저항운동 30분, 유산소운동(30)) 참여가 그들의 신체구성(체중, 체지방률, 제지방, 신체질량지수, 근육량)과 심혈관요인(상완-발목 맥파속도, 동맥협착도)에 미치는 영향을 연구하였다. 연구의 목적을 달성하기 위해 연구에 참여한 대상자는 총 32명으로 운동그릅 16명, 통제그룹 16명으로 무선할당하였다. 운동집단은 주3회 60분씩 복합운동을 실시 하였으며, 통제그룹은 같은 기간 동안 평소와 동일한 환경에서 생활하였다. 본 연구의 통계분석은 동질성을 확보하기 위해서 모든 사전 변인들에 t-검증을 실시하였고 동질성이 확보되서 분산분석방법을 사용하였으며 유의수준은 0.05로 하였다. 연구결과 복합운동에 참여한 운동그룹과 통제그룹간에 신체구성에 대한 것은 통계적으로 유의한 차이를 보이지 않았다. 하지만 심혈관계 요인 중 복합운동 그룹의 상완-발목맥파속도 오른쪽(baPWV-Right(p=.001)), 상완-발목맥파속도 왼쪽(baPWV-Left(p=.001))은 통계적으로 유의한 감소를 나타냈고, 통제그룹은 통계적으로 유의한 차이를 보이지 않았다. 이상의 결과를 살펴보면 65세이상 여성노인이 12주간 체중을 이용한 복합운동에 참여하면 맥파속도(baPWV-Right)가 감소하고 심혈관 질환을 예방하여 노인들의 삶의 질을 높일 수 있을 것이다.

• 대한임상검사과학회지
• /
• 제49권3호
• /
• pp.233-238
• /
• 2017

본 연구는 대학생을 대상으로 체지방률과 혈청 지질 수준의 관련성을 알아보고자 시행하였다. 2015년 6월부터 8월까지 W대학에 재학중인 남자 15명 여자 46명을 대상으로 신체계측, 체지방률, 혈액 검사 등을 실시하였다. 체지방률을 InBody 제조사 guideline에 따라 세 그룹으로 나누었는데 1군 남자의 비율은 26.7%, 여자의 비율은 10.9%였다. 세 그룹에서 체중과 체질량지수는 남녀 모두 유의한 차이를 보였으나(p<0.05) 신장은 유의한 차이가 없었다. 남자는 세 그룹에서 총콜레스테롤, 중성지방, 저밀도지단백콜레스테롤, 헤모글로빈이 유의한 차이를 보였고(p<0.05), 여자에서는 총콜레스테롤, 저밀도지단백콜레스테롤, 알라닌전이효소가 유의한 차이를 보였다(p<0.05). 남녀 모두 각 변수들과의 상관관계를 분석한 결과 체지방 비율은 BMI와 높은 상관관계를 가지고 있었고, 체중, 총콜레스테롤, LDL-C와 유의한 상관관계를 보였다(p<0.05). 또한 심혈관계 질환의 위험인자인 총콜레스테롤에 영향을 미치는 변수를 파악하기 위해 총콜레스테롤을 종속변수로 하고 BMI, 체지방률, 헤모글로빈을 독립변수로 하여 다중회귀분석을 실시하였으나 남녀 모두 유의한 차이를 보이지 않았다. 본 연구는 체지방률과 혈청 지질 수준과 유의한 관계가 있음을 보여준다.