The research on the estimation of visceral fat area by the bioelectric impedance method

皮褶厚度、水密度计称重和体重指数（BMI）已成为用于测定人体组成的方法。最近，腹腔内内脏脂肪的相关性被报道为冠状动脉硬化、胰岛素抵抗的危险因素。它能够对肥胖和内脏脂肪产生许多兴趣，以预防与生活方式有关的疾病。然而，目前还没有一种方法可以用于内脏脂肪面积的测量，除了计算机断层扫描法（CT）外，还没有其他方法可以用于内脏脂肪面积的测量。目前已经开发了一种新的仪器，使用四极多频生物电阻抗，从5 kHz到1 MHz，可以区分细胞外和细胞内的电阻。本研究的目的是建立一个方便和有用的公式，用于内脏脂肪面积的多频生物电阻抗测量。体节周长和皮褶厚度。在脐平面获得腹部CT扫描图像。受试者82人（男51人，女31人），年龄18 ~ 69岁，平均体重指数（BMI）男性22.58 kg/m^2，女性21.1158 kg/m^2。CT测量的平均内脏脂肪面积为男性46.2 cm ~ 2，女性34.2 cm ~ 2，多元回归方程为2.973^*BMI + 1.151^* 年龄+ 1.006^* 髋部+ 0.727^* 腰围+ 0.538^* 腹部Ri- 216.075。腹部CT脐位测量的内脏脂肪面积与估计的内脏脂肪面积的相关系数为0.895（P<0.01）。这些发现表明，该方程可能是有用的评估适用于内脏脂肪区。

Skin fold thickness, hydrodensitometric weighing and body mass index (BMI) have become available for determination for the human body composition. Recently, the relevance to intra-abdominal visceral fat was reported as a risk factor for coronary artery sclerosis, insulin resistance. It was able to have many interests on the obesity and visceral fat to prevent of lifestyle-related disease. However, there is no method except for the computed tomography method (CT) for evaluating visceral fat area.New instruments using a tetrapolar multi-frequency bioelectric impedance have been developed from 5 kHz to 1 MHz could possibly distinguish between extra and intra-cellular resistance.The purpose of this study was to develop convenient and useful equations for of visceral fat area by multi-frequency bioelectric impedance, circumferences of body segment and skinfold thickness. Abdominal CT scan image was obtained at the level of umbilicus. The subjects were 82 persons (male : 51, female : 31) aged 18 to 69 years.The average BMI were 22.58 kg/m^2 for male, 21.1158 kg/m^2 for female. The average visceral fat area determined by CT were 46.2 cm^2 for male and 34.2 cm^2 for female.Multiple regression equation developed in this study for estimating visceral fat area was 2.973^*BMI + 1.151^*age + 1.006^*hip + 0.727^*wait + 0.538^*Ri of abdomen - 216.075. The correlation between visceral fat area by abdominal CT at the umbilicus level and estimating visceral fat area was 0.895 (p<0.01). These findings suggest that the equation may be useful for assessment of applicable to a visceral fat area.