• Sleep Medicine and Psychophysiology
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• v.9 no.1
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• pp.61-67
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• 2002

Objectives: This study is aimed at measuring psychophysiological responses using a biofeedback system in healthy people to obtain basic normative data for biofeedback research and treatment. Methods: Ninety-six healthy volunteers (55 males and 41 females : average age $30.4{\pm}8.0$) without any history of major medical or psychiatric illnesses participated in this study. Psychophysiological responses were assessed using the ProComp+ and BioGraph program (ver. 2.1) with regard to forearm and frontal electromyography (EMG), electrodermal response (EDR), and skin temperature. They were measured in 3 phases (baseline, stress, and recovery phases), respectively. Beck depression inventory and Spielberger state and trait anxiety inventory were used to measure mood states. We compared psychophysiological responses according to age and gender differences, respectively and examined the relationship between mood states and psychophysiological measures. Results: People in their twenties showed higher EDR levels in the 3 phases than those of other age groups. Female subjects showed higher frontal EMG levels in the 3 phases compared with male subjects. There was no significant correlation between biofeedback measures and mood states in these subjects. Conclusion: We present normative data of psychophysiological responses measured by a biofeedback system in healthy people. These results suggest that gender and age should be considered as important variables in assessing psychophysiological responses using a biofeedback system.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.499-500
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• 2001

곰피(Ecklonia stolonofera)는 한국 동, 남해안에 널리 분포하는 다년생 해조로서 일반적으로 조하대의 수심 2-l0m깊이에 서시한다. 이종은 해중림을 구성하는 해조로서 천해의 주요한 1차 생산자일 뿐만 아니라 연안생태계에서 수산물생산에 직접 관여하는 중요한 생태적 지위를 가진다. 곰피의 생태 및 생리에 대해서는 Notoya와 Aruga (1990)의 보고가 있으며 이외에 유주자낭 형성(Notoya 와 Asuke, 1983)에 관한 것과 유아포체내의 핵분열 (Yabu and Notoya, 1985)에 관한 연구가 있고 국내에서는 부산만의 저조선 부근에서 곰피의 연령과 성장에 관하여 한 Park 등 (1994)의 연구가 있다. (중략)

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.5 no.1
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• pp.62-67
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• 2002

Purpose: The aim of this study was to investigate the age of onset and the prevalence of lactose malabsorption in early childhood in Korea. Methods: We conducted a study of lactose malabsorption by breath hydrogen test in healthy children aged between 25~96 months old. Standard lactose loading (2 g lactose/kg, maximum 40g) test was done in 129 children and cow's milk (10 mL/kg) loading in 126 children followed by breath sampling of 60 and 120 minutes after the loading. An increase above baseline of 20 ppm or more was used as a criteria for positive responses. Results: The prevalence of lactose malabsorption was 7% in 25~36 months old, 19% in 37~48 months old, 35% in 49~60 months old, 55% in 61~72 months old, 82% in 72~84 months old, 80% in 85~96 months old children. Only 1% of the children showed positive result in breath hydrogen test after the cow's milk challenge. Conclusion: The prevalence of lactose malabsorption was increased between 37 months and 60 months of age, reached to adult level of prevalence after 72 months of age. When physiological dose of lactose was used as the challenge, the number of lactose malabsorbers become clinically insignificant.

• Journal of the korean academy of Pediatric Dentistry
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• v.25 no.2
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• pp.268-276
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• 1998

Dentigerous cyst is a cyst arising by a seperation of follicles from around the anatomical crown of an unerupted tooth within the jaws. The dentigerous cyst is seen during routine radiographic examination. It is detected radiographically as a sharply delineated, round or oval, unilocular, homogeneous, and radiolucent area within which there is the crown of an unerupted tooth. The histological appearance of the dentigerous cyst is usually attached to the tooth at the cementoenamel junction and the sac lined by a thin, regular. stratified squamous epithelium. The dentigerous cyst can be treated by two surgical procedures: enucleation or marsupialization. The size and location of the lesion usually dictates the surgical procedures. The marsupialization consists of the removal of only a portion of the wall of the cyst to make the remaining cystic lining continous with the oral mucosa. The cyst, deprived of its supporting hydrostatic pressure, gradually shrinks until it is obliterated. The marsupialization is the best way to conserve the tooth affected by a dentigerous cyst and to permit its eruption. especially in a young person. Main advantages of the marsupialization are its relative simplicity and its conservation with respect to adjacent important structures. In marsupialization technique, a plugger can be constructed, if necessary, to maintain the opening and prevent food debris from entering the cystic cavity. However, the disadvantage is the potentiality of leaving pathologic tissues. Therefore frequent recall appointments are advisable.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.06a
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• pp.919-922
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• 2005

Generally, we take a bath to obtain a clean body as well as a good health. Human body generates various physical and emotional changes by stimulations of therapeutic effect of heat and hydraulic pressures. Accordingly, we can obtain not only relaxations but also effects of hydrotherapy. The survey of bathing/showering behaviors and therapeutic effect of heat reactions present elementary data for development of a bathing/showering system. However, there are few existing data for bathing/showering behaviors and effects. Consequently, surveys were performed to know patterns of bathing and showering, and relations between physiological changes and water temperature were examined by partial bathing on human body in this study.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2001.11a
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• pp.117-121
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• 2001

본 연구에서는 향에 대한 생리적 반응과 선호도가 노년층과 청년층에서 어떠한 차이가 있는지 살펴보고자 하였다. 20대 및 60대 피험자에게 100％의 Basil oil, Jasmin oil, Lavender oil, Lemon il, Ylangylang oil을 제시하여 자율신경계의 반응인 심전도의 RR간격과 GSR을 측정ㆍ분석하였으며, 선호도 평가를 하여 자율신경계의 반응과의 상관성을 검토하였다. 20대는 Lemon 향에서 RR 간격 및 GSR의 반응이 안정되게 나타났으며, 선호도 평가에서도 Lemon 을 가장 선호도가 높게 평가하는 것을 볼 수 있었다. 60대는 Lavender에서 RR 간격이 증가하고 GSR이 감소하여 안정된 반응을 보였고, Lavender에 대한 선호도 또한 높게 평가하여 60대는 다른 향보다 Lavender를 좋은 향으로 평가함을 알 수 있었다.

• Journal of Nutrition and Health
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• v.43 no.2
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• pp.152-160
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• 2010

The purpose of this study was to investigate the effects of aging process on the immunity in human subjects. In this investigation, nineteen families of three generations (daughters on college age, their mothers, and grandmothers) participated to avoid genetic variation among individuals. Dietary food records, anthropometric measurements and biochemical assessments of serum nutrients were used to evaluate the nutritional status of subjects. The immune parameters of subjects were assessed by the total and differential WBC count. Total B and T lymphocytes, and T cell subsets were quantified by flowcytometer. Serum immunoglobulin G, A, M concentrations were also measured as an index of humoral immunity. The result of this study can be summarized as follows: 1. Along with the aging process, body fat was found to be increased whereas lean body mass and total body water were diminished. Since there were no significant difference in serum vitamin E levels in all age groups, serum retinal concentrations tended to decrease as one gets old. 2. Although total number of T lymphocytes seemed to be unchanged, B lymphocytes and NK cell numbers were increased by aging. The Percentage of CD8 + lymphocytes was lower in the elderly subjects compared with the younger, resulting in higher ratio of CD4 +/CD8 + lymphocytes in the elderly. Serum Ig G and Ig A levels remained unchanged, but IgM levels were significantly decreased as the age processes continue. Taking all together, it could be suggested that the alteration of immune cell population by aging is selective and possibly nonage factors such as nutrition may be attributable to the change of immunity in the elderly. The nutritional status and aging process may selectively affect both the cell-mediated (CD8 +, CD4 + CD8 + ratio, NK cell) and humoral (B lymphocyte, Immunoglobulin M, G) immune parameters in human subjects.

• Journal of Korean Physical Therapy Science
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• v.7 no.2
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• pp.427-437
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• 2000

편마비 환자의 물리치료는 장애 결과를 완화시키는 것에 초점을 두고 있다. 본 연구는 신경생리학적 개념을 기초로 한 중재 접근 방법 중 편마비 환자에게 신경 발달 치료와 신경근 균형 접근 기법의 중재 효과를 비교 하였다. 연구 대상은 서울특별시와 전라북도에 소재한 종합병원 및 정형외과 의원에 입원 및 통원하고 있는 47-71세의 연령 범위에 있는 편마비 환자 30명 이다. 중재 집단의 기능적 능력 향상을 평가하기 위해 편마비 환자를 위한 운동 평가 척도와 수정된 바델 척도를 평가도구로 사용하였다. 편마비 환자의 기능적 능력 향성을 평가도구에 의해 측정된 결과를 분석한 바 운동평가 척도 항목중 바로누운 자세에서 옆으로 눕기와 앉아서 균형 취하기 영역에서, 수정된 바델 척도 항목 중 식사하기 영역에서 통계적으로 유의한 차이를 보였다(P<.05). 편마비 환자의 손상 부위, 손상 형태, 마비 부위 등의 손상의 본질에 따른 대상의 선정과 운동 조절 형태에 관한 지식 그리고 신경학적 결함 정도를 심도있게 다루어 기능적 능력 향상의 임상적 효과를 검증하는 것이 중요하다.

• The korean journal of orthodontics
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• v.39 no.2
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• pp.120-129
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• 2009

Objective: To estimate dental maturity using the Demirjian Index for the mandibular third molar and investigate the relationships between dental maturity and skeletal maturity among growing children. Methods: The samples were derived from panoramic, lateral cephalometric and hand-wrist radiographs of 270 female subjects registered as patients at the orthodontic department, dental hospital, Yonsei University. Dental maturity [Demirjian Index (DI)] and skeletal maturity [skeletal maturation indicators (SMIs)] and cervical vertebrae maturation indicators (CVMIs)] were estimated from these radiographs. Results: There was a significant correlation (r = 0.64) between SMIs and DI, and a similar correlation (r = 0.59) was observed between CVMIs and DI (p < 0.001). If DI was above Stage E, then the SMI was above Stage 10 and the CVMI was above Stage 5. There was a weak correlation (r = 0.26) between age at menarche and DI (p < 0.001). There was no significant difference in DI among Class I, II or III malocclusions. Conclusions: Dental maturity evaluation using the mandibular third molar will be an adjunctive tool in combination with cervical vertebrae and hand-wrist maturity evaluations.

• The Korean Journal of Nuclear Medicine
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• v.32 no.1
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• pp.71-80
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• 1998

This study examines the levels of carbohydrate antigen 19-9(CA19-9) and cancer antigen 125(CA125) in serum and its related factors in healthy Korean population. Although CA19-9 and CA125 have been widely used tumor markers for gastroenteric cancers and ovarian cancer in Western countries, there are no information available on the serum levels of CA19-9 and CA125 in healthy population and the factors affecting the levels of these tumor markers in Korea. A cross-sectional study was performed to measure CA19-9 and CA125 among 76 healthy males and 95 healthy females in Korea. CA19-9 and CA125 were quantitated using solid-phase radioimmunoassay kits. Informations on the factors which might be related to the levels of these markers were collected by questionnaire(e.g., smoking, alcohol consumption, menstruation, oral pill use, breast-feeding history, etc.). There was no statistically significant difference in the mean of CA19-9 concentration between men(10.4 u/ml) and women(10.1 u/ml), whereas the mean of CA125 levels(11.2 u/ml) was higher in women than that(2.5 u/ml) in men. Although there was a statistically significant association between CA19-9 and average number of cigarette consumed per day(r=0.59, p=0.026) and total number of cigarettes consumed in women(r=0.74, p=0.003), the significance disappeared by multiple regression analysis after adjusting age and body mass index. Later age of menopause(p=0.035) and longer duration of breast-feeding(p=0.050) were significant predictors for CA125 levels in women by multiple regression analysis after adjusting age and body mass index. In conclusion, CA19-9 can be used as a stable tumor marker in clinical practices, however, menstruation and breast-feeding should be considered when CA125 is used in women.