Patent ID: 7962205
Filing Date: 2011-06-14
Classification: A61B

Abstract:
1. A human subject index estimation apparatus that estimates a circumference of a human subject at a predetermined position between levels of the waist and the hips inclusive, comprising: a weight scale that measures a weight of the human subject; and a computer that executes a computation in accordance with an equation (A) thereby estimating the circumference, wherein the equation (A) is: wherein: Y is the circumference, W is the weight, a1 is a constant, k is a variable, and f(k) is a function of at least one variable, the at least one variable including at least one of sex, race, age, height, body mass index, bioelectric impedance, body fat percentage, and body fat mass, wherein the predetermined position is at the level of the waist, wherein the computer executes the computation of the equation (A) using, as the function f(k), a function f(Z,H,E) as shown in an equation (B) which is: wherein: Z is bioelectric impedance, H is height, E is age, and a2 and a3 are constants.