| 摘要 |
A visceral fat area of a subject is calculated based on an equation using as variables a sex of the subject, and an electric impedance ratio between the longitudinal width of the abdomen and the transversal width of the abdomen of the subject. As an example of the equation, let the visceral fat area (cm<SUP>2</SUP>) be VFA and the longitudinal-transversal impedance ratio of the abdomen be R1, then VFA=a1+b1xR1 (where a1 and b1 are constants). A visceral fat area of the subject is also calculated based on an equation using abdomen circumference as an additional variable. As an example of the equation, let the abdomen circumference (cm) be W and the longitudinal-transversal impedance ratio of the abdomen be R4, then VFA=Wx(a4+b4xR4)+c4 (where a4, b4 and c4 are constants) or VFA=W<SUP>2</SUP>x(alpha4+beta4xR4)+gamma4 (where alpha4, beta4 and gamma4 are constants). The calculated visceral fat area is compared with the reference value, and the comparison results are outputted. In the same manner, visceral fat weight and visceral fat volume can be calculated.
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