• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
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• pp.46-48
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• 2007

In this study, we determined the optimum electrode pair for measuring the abdominal pressure using bio-impedance method. Because impedance changes differ from a weight, a height, contractile force, volume of muscle and blood other or whatever of individuals, it was quantified using values of impedance change, correlation coefficient and SNR. Our results showed the optimum electrode pair (1, 9) which could detect impedance changes due to an increase of the intensity of the abdominal pressure. The correlation coefficient and quadratic function between the RMS values of EMG and the impedance changes were 0.87 and $y=0.0014x^2$+0.0620x+0.6958, respectively. It demonstrated that the abdominal pressure could be measured non-invasively and simply using bio-impedance method. We propose that this optimum electrode configuration would be useful for future studies involving the convenient measurement of abdominal pressure by ambulatory urodynamics monitoring study.

• 전기학회논문지
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• 제56권7호
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• pp.1339-1342
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• 2007

In this study, we determined the optimum electrode pair for measuring the abdominal pressure using bio-impedance method and compared with conventional methods. Because impedance changes differ from a weight, a height, contractile force, volume of muscle and blood other or whatever of individuals, it was quantified using values of impedance change, correlation coefficient and SNR. Our results showed the optimum electrode pair (1, 9) which could detect impedance changes due to an increase of the intensity of the abdominal pressure. The correlation coefficient and quadratic function between the RMS values of EMG and the impedance changes were 0.87 and $y=0.0014x^2+0.0620x+0.6958$, respectively. It demonstrated that the abdominal pressure could be measured noninvasively and simply using bio-impedance method. We propose that this optimum electrode configuration would be useful for future studies involving the convenient measurement of abdominal pressure by ambulatory urodynamics monitoring study.

• 전기학회논문지
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• 제58권4호
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• pp.849-856
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• 2009

Truncal obesity associated with insulin resistance and metabolic syndrome increase the likelihood of hypertension, various cardiovascular diseases, hyperlipidemia and coronary heart diseases. International Diabetes Federation (IDF) experts recognized that it is necessary to develop the simple diagnostic tool which is applicable to diagnose truncal obesity worldwide, and proposed the method using a waist circumference but there is a limit to estimate subcutaneous fat distribution. However, waist line is also influenced by total fat capacity less than the intra abdominal fat. The more having severe obesity, the more correlation coefficient between waist line and intra abdominal fat is low. Therefore, this thesis defines a new abdominal impedance measurement position and impedance-index to analysis central obesity. This proposes the new model to estimate abdominal obesity using the abdominal impedance-index and CT images acquired fro 160 Korean subjects. The proposed model shows that the abdominal fat distribution has a higher correlation than waist line. (Adj R2=0.809, 0.667 and 0.687 with abdominal fat area, visceral fat area and subcutaneous fat area respectively).

• 전기학회논문지
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• 제56권6호
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• pp.1170-1176
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• 2007

The conventional urodynamic monitoring is fulfilled by artificially filling a bladder with saline. Generally. it is difficult to evaluate the physiological functions of the storage and voiding of a bladder. With this aim, we constructed an ambulatory urodynamic monitoring (AUM) system and proposed a novel method estimating abdominal pressure by measuring bio-impedance variations. Our system was clinically evaluated for 10 patients. It turned out to be that as the intensity of the abdomen contraction increased, the amplitude of bio-impedance signal and the RMS value of EMG increased more as compared to those who observed during the rest mode. Also, we determined the optimum electrode pair for estimating the abdominal pressure using bio-impedance method and consequently compared with the conventional methods. Because impedance changes differ from a weight, a height, contractile force, volume of muscle and blood other or whatever of individuals, it was quantified in terms of impedance change, correlation coefficient and SNR Our results showed the optimum electrode pair (1,9) which could detect impedance changes due to the increase of the intensity in the abdominal pressure. The correlation coefficient and quadratic function between the RMS values of EMG and the impedance changes were 0.87 and $y=0.0014x^2+0.0620x+0.6958$, respectively. Thus, our system demonstrated that the abdominal pressure could be measured noninvasively and conveniently by simply estimating bio-impedance values. We propose that this optimum electrode configuration would be useful for the future studies involving the handy measurements of abdominal pressure with our suggested ambulatory urodynamics monitoring system.

• Clinical and Experimental Pediatrics
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• 제48권10호
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• pp.1082-1089
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• 2005

목 적 : 복부 비만은 고혈압, 인슐린 저항, 고인슐린혈증, 당뇨, 고지혈증과 같은 많은 심혈관계 질환의 위험 요인으로 제시되고 있다. 복부 비만을 측정하는 지표로 허리/둔부 비와 허리둘레가 사용되고 있으나, 관상동맥 질환의 예측인자로 복부 비만의 측정학적 cut-off 수치가 소아에서는 아직 제시되지 못하고 있다. 복부 전산화 단층촬영과 초음파를 이용하여 복부 지방을 측정하고, 여러 비만 지표들과의 상관관계를 연구함으로써 복부 비만의 합병증으로 초래되는 심혈관계 질환의 위험인자 평가 방법을 알아 보고자 본 연구를 실시하였다. 방 법 : 비만한 청소년 27명과 나이와 성별이 대등한 정상 체중을 가진 청소년 22명을 대상으로 하여 체질량 지수와 비만 지수, 상완둘레 및 삼각근에서 피부 두께를 비교하였다. 또한, 12시간 공복 상태에서 혈중 지질 및 혈당, 인슐린, 4가지 사이토카인을 측정하고, 인슐린 저항 지수를 구하였으며, 생체 전기저항법을 이용하여 체지방량, 체지방률, 복부지방률을 측정하여 비교하였다. 비만군에서는 복부 초음파로 배꼽부위 피하지방 두께와 복강 내 지방 두께를 측정하고, 복부 전산화 단층 촬영으로 얻은 횡단면 스캔에서 전체 지방 면적을 구하였고, 이 중 피하지방의 면적을 감산하여 복강 내 지방 면적을 구하였다. 결 과 : 소아에서 복부 CT로 측정한 총 지방 면적과 생체 전기 저항법으로 측정한 총지방량과 상관성이 매우 높았다(r=0.954, P<0.05). 복부 CT에서 측정한 복강 내 지방 면적은 상완둘레, 복부비만율, 초음파로 측정한 복부 내 지방 깊이 및 피하 지방량, 체질량 지수, 중성지방 등과 상관성이 높았다. 결 론 : 복부 CT는 복강 내 지방을 측정하는 가장 정확한 방법이지만 임상적으로 유용하지 못하므로, CT와 상관성이 높은 복부 초음파로 대치할 수 있다. 외래나 학교 신체검사에서 사용할 수 있는 선별 검사로는 생체 전기 저항법에 의한 체지방 측정, 상완 둘레, 체질량 지수, 허리/둔부 비 등이 있다. 소아 성인병의 심혈관 위험 예측 지표로는 공복시 leptin, 중성지방, 인슐린 농도 등을 사용할 수 있다.

• 한방재활의학과학회지
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• 제19권2호
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• pp.261-273
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• 2009

Objectives : This study was performed to figure out the effects of herbal mesotherapy on abdominal fat in obese women. Methods : Forty obese women those who were diagnosed abdominal obesity had been recruited during February, 2008. They were randomly assigned experimental or control group under block-randomization. Experimental group were treated with Sobi-eum(Xiaofei-yin) injection during 6 weeks (2 times a week) and placebo group were treated with normal saline injection under same procedures. Anthropometry, body impedance analysis, fat computed tomography, blood test, and questionnaires had been administered before and after the treatment. Results : Four subjects were dropped out (voluntary give up), so 18 in experimental group and 18 in placebo group were evaluated. There were significant changes after treatments in both groups. Although no significant differences have been found in the result of anthropometry, body impedance analysis and fat computed tomography between two groups, in the experimental group, the changes of total fat area had a highly significant relationship with all part of abdominal fat. While the placebo group had highly significant relationships with subcutaneous fat area, superficial and deep subcutaneous fat area but not with visceral fat area. Conclusions : Compaired with saline group, herbal mesotheraphy Sobi-eum(Xiaofei-yin) is effective in reduction of visceral fat after adjusting TFA.

• 한방비만학회지
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• 제8권2호
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• pp.25-35
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• 2008

Objectives This study was performed to find out the characters about distribution of abdominal fat(especially superficial and deep subcutaneous fat) in obese premenopausal Korean women. Methods 39 obese premenopausal women were recruited in 2008. Anthropometry and body impedance analysis have been done and abdominal fat distribution had been assessed by computed tomography scan at the level of L4-5. Blood test and questionnaires about depression, eating attitude and physical activity were underwent. Result Abdominal total fat area, subcutaneous fat area including superficial and deep were significantly correlated with anthropometry and BIA result while visceral fat was correlated only with age and waist circumference. In blood profile, only visceral fat area was correlated with HDL cholesterol and triglyceride. And there were no correlation among questionnaires and abdominal fat. There were no difference between superficial and deep subcutaneous fat. Conclusion Abdominal subcutaneous fat including superficial and deep did not have any correlation with heart risk factor. superficial and deep subcutaneous fat had no differences with each other and they did not show any correlation with visceral fat in obese perimenopausal Korean women.

• 대한한의학회지
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• 제29권3호
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• pp.113-123
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• 2008

Objectives: Obesity is chronic condition which can severely influence health. People with a high percentage of body fat (%BF) have high prevalence of hypertension and hypercholesterolemia. Abdominal obesity (AO) seems to play a major role in the development of cardiovascular disease, diabetes and hyperlipidemia. This study investigated the %BF and AO of workers in the automobile manufacturing industry. Methods: The subjects were categorized by sex, age, job class, drinking history and smoking history. %BF and AO were measured by using bioelectrical impedance analysis (Jawon Medical, Seoul, Korea). We analyzed the relationship between age, sex, job class, drinking history, smoking history and %BF and WHR into frequencies, $X^2$-test using the SPSS Ver. 12.0. Results: Regarding the relationship between sex and %BF, AO, there was statistically significant difference as men had a significant higher level of %BF and AO than women. There was a positive correlation between age and both %BF and AO. Workers in their 40s especially ran level of AO up. In job class, office workers were apt to have a higherlevel of %BF and AO than production line workers. %BF and AO of the non-drinker group showed a lower level than the drinker group. On the other hand, the ex-smoker group had higher levels of %BF and AO than the non-smoker or current-smoker groups. Conclusions: The above results showed that men, the advanced in years, office workers, drinkers and ex-smokers had high levels of %BF and AO.

• Journal of Korean Biological Nursing Science
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• 제22권1호
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• pp.36-44
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• 2020

Purpose: The purpose of this study was to predict measuring site suited for abdominal skin fold thickness (ASFT) by measuring the distribution of abdominal subcutaneous fat thickness (AScFT) and ascertain the correlations among obesity indicators. Methods: The size of analysis materials was 124 secondary data measured by ultrasonic device, bioelectrical impedance analyzer and caliper. Data were analyzed using t-test, and Pearson's correlation. Results: The average of AScFT was 10.63± 6.79mm with its range 1.39-36.16 mm, and AScFT of female and of central parts were thicker than those of male and outer parts in the abdomen. The average of ASFT was 29.26±12.59 mm. Site 5 on Figure 1 was most similar to the average of AScFT in both sexes. Body mass index (BMI) and waist hip ratio (WHR) were 23.65±3.98 and 0.88±0.05 respectively. The body weight, BMI, WHR, visceral fat, ASFT vs AScFT revealed in significant correlation (r= .29, r= .55, r= .39, r= .33. r= .29). Conclusion: BMI and WHR seem more useful than other obesity indicators, when obesity control is necessary for Type 2 diabetes patients. Site 5 on Figure 1 is most suitable site to measure ASFT.

• 한국콘텐츠학회논문지
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• 제11권12호
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• pp.807-813
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• 2011

비만인 관리를 위해서는 복부지방의 정확한 측정이 필요하다. 이 연구의 목적은 BIA와 CT를 이용해 측정한 복부지방과 지질과의 관련성을 살펴봄으로써 이들 측정방법의 비만지표로서의 유용성을 살펴보고자 하였다. 성인 남성 140명을 대상으로 실시한 연구결과는 다음과 같다. 과체중 비만그룹의 TG가 정상그룹에 비해 높았으며, HDL은 통계적으로 유의하게 낮았다. 정상그룹의 TG와 HDL은 BIA와 CT측정값과 유의한 상관관계가 있었으며, 과체중 비만그룹은 TG가 BIA 측정값과 유의한 상관관계가 있었으나 CT측정값과는 상관성이 없는 것으로 나타났다. 정상그룹의 체지방량과 총복부지방량에 영향을 미치는 변수는 HDL이었으며, 과체중 비만그룹은 TG가 체지방량과 체지방률에 영향을 미치는 변수였고 복부지방량에 영향을 미치는 변수는 TC인 것으로 나타났다. 결론적으로 복부지방과 지질과는 연관성이 있으며, BIA와 CT를 이용해 복부지방량을 평가하는 것은비만평가에 유용한 방법이라 생각되어진다. 그러나 내장비만을 정확히 측정하기 위해서는 CT검사를 병용하는 것이 필요하다 생각된다.