• Journal of Preventive Medicine and Public Health
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• 제30권1호
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• pp.31-43
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• 1997

Obesity usually is defined as the presence of and abnormally amount of adipose tissue. In many epidemiologic study, obesity as a health risk factor has been estimated by Body Mass Index(BMI) in general. This study was conducted to review of body fat percent measured by Bioelectric impedance analyzer as a estimator of obesity in a rural adult population. The study subjects were 421 men and 664 women who reside in the area on the Juam lake. They were sampled by multistage cluster sampling. Their mean age was 59 years old. Body fat percent increased with age, but BMI decreased with age in this study. Body fat percent was more larger at female and elder on the same BMI. The correlation coefficient between with body fat percent and body mass index was low (r=0.4737). Body fat percent was explained by not only BMI but also sex and age $(r^2=0.63)$. The result suggested that it is inadequate for BMI only to estimate obesity about elderly person who reside in the rural community. The relation of body fat percent and body mass index of this study agreed with the preceding know-ledges and studies in general.

• 동의신경정신과학회지
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• 제11권1호
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• pp.83-96
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• 2000

Objectives: In order to study the effect of the oriental medical therapy on the patients who visited Neuropsychiatry and oriental medical differentiation of symptoms and signs with ABR (Autonomic Bioelectric Response recorder)-2000, these clinical studies were performed. Methods: Sixty six patients with headache were classified into three groups; the first is tension headache, the second is migraine headache, the last is the others, each group was investigated of a various characteristic, the effect of the oriental medical therapy and stress was measured by ABR-2000. Result: 1. According to the statics, the tention headache's rate was higher than migraine; on the whole woman's rate was higher than man's. however in the migraine the rate of sex was equal. 2. According to the cause facter, oversensitiveness, overexertion, dyspepsia, etc. were numorous in the order. 3. According to the oriental medical differentiation of symptoms and signs, the rate of stagnation of the liver-qi' s fire-transmission(肝鬱化火) and deficiency of qi(氣虛), these two types were highest. result of analyzing ABR-2000 is that stagnation of the liver-qi's fire-transmission(肝鬱化火) is the highest stress. 4. According to treatment rate, 80.3 percent of patients satisfied of treatment.

• 전기학회논문지
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• 제58권2호
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• pp.422-429
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• 2009

Meridian which used as the basic theory of acupuncture treatment, is an important functional connection system of acupuncture point in oriental medicine. Yangdorak and EAV have lack of precision because of using 2-electrode method, occurring high non-uniformed current density and electrode contact status on electrode placement spot. Therefore we implemented a meridian impedance measurement system for measuring meridian impedance using 4-electrode method. In order to confirm the precision of developed system, we made an constant current characteristic experiment using standard resistor. As a results of clinical study with 18 subjects, the meridian impedance showed that reproductivity and repeatability of HT7 acupuncture point are $0.515[k{\Omega}]{\pm}0.000$(mean${\pm}$standard deviation) and $0.515[k{\Omega}]{\pm}0.002$, respectively. And reproductivity and repeatability of PC7 are $0.521[k{\Omega}]{\pm}0.000$ and $0.521[{\Omega}]{\pm}0.001$ respectively. The proposed system was stable and reliable. Therefore this study proved AC impedance method to valid in measuring meridian impedance, and also verified precision and repeatability of the proposed meridian impedance measurement system. The proposed system will serve as more effective method of measuring meridian phenomena as a bioelectric signal in clinical practice.

• 한국정밀공학회지
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• 제21권4호
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• pp.5-11
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• 2004

생체 시스템은 수많은 세포들로 구성되어 있다. 일반적으로 세포막은 단백질과 지방의 혼합체로 구성되어 있으며 두께는 7.5-10nm 정도이다. 단백질은 지방과 함께 세포막을 통한 물질의 이동을 제어하는 역할을 한다. 특히 지방층은 지방에 잘 용해되는 산소나 탄산가스 등은 잘 통과시키지만, 지방에 잘 용해되지 않는 나트륨, 칼륨, 칼슘, 글루코스, 아미노산 등은 지방층 내부에 삽입되어 있는 단백질에 의해 조절된다.(중략)

• 동의신경정신과학회지
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• 제11권2호
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• pp.63-78
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• 2000

Headache is one of the most common medical complaints. It is not so easy to manage headache. especially if it is chronic although it seldom cause serious problem. There are many psychological factor known to induce, maintain an aggravate symptom in patients with chronic headache. The purpose of this study is to investigate clinical characteristics with ABR-2000 was carried out for 57 patients who had been suffered from headache for 6 months from march to August 2000.The results were as follows:1. According to the statics, on the whole woman's rate was higher than man's, and the mean duration of the headache was 8.06 years.2. Common associated symptoms were nausea. dyspepsia, dizziness, palpitation, fatigue, depression, etc.3. According to oriental medical differentiation of symptoms and signs, the rate of stagnation of the liver-qi's fire-transmission(肝變化火), deficiency of blood(血虛) and plegm syncope (痰厥), these three types were hghest.4. Result of analyzing ABR-2000 is that the rate of low response is higher than high response's on each item. But result of Graph A is that the rate of high response in higher than that of low response only in deficiency of Yin(陰虛) and the rate of high response in stagnation of the liver-qi's fire-transmission(肝變化火) and deficiency of blood (血虛) is comparatively high. Result of Graph R is that the rate of high response in wind-heat(風熱), deficiency of blood(血虛) and plegm syncope(痰厥) is comparatively higher than in others.

• 센서학회지
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• 제12권2호
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• pp.88-94
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• 2003

근전도는 근육의 수축을 관장하는 신경다발의 전기적 흥분에 의해 생기는 생체전기신호이다. 따라서 근육운동에 따라 발생하는 근전도 신호를 측정, 분석하면 운동기능의 정상여부를 판단할 수 있을 뿐 아니라 사용자의 동작에 의해 컴퓨터나 전자장치를 작동시키는 인간-기계 인터페이스(man-machine interface)용 입력신호로도 사용할 수 있다. 본 연구에서는 사용자의 일상생활에서의 자연스러운 동작과 관련된 근전도 신호를 측정할 수 있는 소형의 무선 생체신호 측정시스템을 개발하였다. 기존의 근전도 측정 시스템에서 전극과 증폭기 사이에 존재하는 전선은 동적잡음의 원인이 되고 사용자의 동작을 방해할 수 있으므로 소형의 증폭회로를 전극 바로 위에 일체형으로 제작하였고 증폭기와 컴퓨터 사이에 무선 데이터 전송을 사용하여 사용자의 일상적인 원활한 동작을 가능케 하였다. 개발된 측정 시스템의 크기는 $60{\times}40{\times}25mm$이고 무게는 100g이다. 개발된 시스템에 대한 성능 평가결과 컴퓨터를 위한 새로운 인터페이스 장치, 운동선수의 훈련결과 분석, 환자의 재활훈련 성과 측정 그리고 가상현실 입력장비 등의 용도로 사용될 수 있음을 확인하였다.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2001년도 춘계학술대회 논문집
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• pp.147-155
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• 2001

Nasucon lamp and Russian ones, which are coated with some special materials on the glass bulb, gave good clinical results for a cancer therapy. They are experimentally studied with Automatic Bioelectric Response Recorder on the six placements of the electrodes (two feet, two hands and two foreheads). They reduced the current rather than the control (natural) state. However infrared lamp and Chinese God light did not reduced the value current. Hemoglobin in blood. Brown gas, Ti$_3$SiC$_2$ and Nasucon have planar crystallizing $\pi$-bonding bonding layer and covalent bonding one in sequence commonly and thus the alternating magnetic fields are protected. Nasucon lamp and Russian ones utilized electric bulbs in order to generate alternating magnetic fields and to produce absorbing force.

• Journal of Chest Surgery
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• 제28권11호
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• pp.973-976
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• 1995

The assessment method of human body composion by bioelectrical impedance is very simple, safe, rapid and noninvasive. Based on prediction formulas for total body water from bioelectrical impedance, the observed weight loss should be associated with an increase in impedance. However in edematous patients for dialysis, the calculated total body water loss as calculated from impedance were overestimated and significantly higher than the weight loss after dialysis. So determination of impedance were made in 50 edematous patients before, during and after dialysis. Mean weight loss, which was assumed to be only loss of water was 1719$\pm$ 866 gr and mean impedance change was 71.0 $\pm$ 23.0 Ohm under 50kHz. Body weight loss was highly correlated [r>0.81 with the increase in body impedance under variable frequencies[1, 10, 20, 30, 40, 50 kHz . But there were no differences between frequences. In conclusion, clinical application of bioelectrical impedance method is useful for individual edematous patients with new correlation equation[Y=230+26.8X, X;Impedance change, Y;Calculated total body water loss .

• Progress in Superconductivity
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• 제4권1호
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• pp.48-52
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• 2002

When applying a SQUID system for diagnosing heart disease, it is informative to obtain the source current distributions from the measured MCG (magnetocardiogram) signals since the bioelectric activity in the heart is generally represented by distributed current sources. In order to estimate the Primary current distribution in a heart, the minimum norm estimate was computed, assuming a source plane below the chest surface. In the simulation, current distributions, which were computed for the test dipoles represented well the essential feature of the test-current configurations. Source current reconstruction was performed for MCG signal of a healthy volunteer, which was recorded using a 40-channel SQUID system in a magnetically shielded room. It was found that the obtained current distribution is consistent with the electrical activity in a heart.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 D
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• pp.2712-2714
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• 2002

Recently, the high blood pressure is appeared the most frequent disease of a man's the whole sickness. But, to treat this disease is uncertain and produces an adverse reaction of a medicine therapy. Also, a patients are burden high price for doctor's treatment. Therefore, we studied effectively and financially to execute the treatment of the high blood pressure using the Chinese Medicine Theorem that recently arousing a great interest of the people. The main theories of this paper are Blood Vessel Theory and Acupuncture. The composed circuits are low-frequency generating circuit, charging-discharging circuit. The former will substitute a needle that use in the acupuncture therapy method and the latter will charge and discharge the bioelectric action potential of a patient in Ear Acupuncture Point. Also, all circuits will be controlled a micro-computer circuit.