Body composition estimation method and body composition measuring apparatus
First Claim
1. A body composition estimation method comprising calculating a parameter of a bioelectrical impedance in a body part to be measured, from a parameter value of an electric current to be applied to a living body and a parameter value of a measured voltage, wherein by use of a parameter representing an intracellular/extracellular fluid ratio which is included in a parameter value of a bioelectrical impedance measured at a given frequency, the parameter value of the measured bioelectrical impedance is corrected and a body composition is estimated based on the corrected parameter value.
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Abstract
By use of a parameter representing an intracellular/extracellular fluid ratio which is included in a parameter value associated with a bioelectric impedance measured at a given frequency or a parameter value associated with a bioelectric impedance measured at other frequency, the parameter value associated with the measured bioelectric impedance is corrected, and a body composition and the like are estimated based on the corrected parameter value associated with the bioelectric impedance. Further, the parameter to be corrected which is associated with the bioelectric impedance is the absolute value of the bioelectric impedance, a bioelectric impedance vector value or the resistance component value of the bioelectric impedance vector.
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Citations
26 Claims
- 1. A body composition estimation method comprising calculating a parameter of a bioelectrical impedance in a body part to be measured, from a parameter value of an electric current to be applied to a living body and a parameter value of a measured voltage, wherein by use of a parameter representing an intracellular/extracellular fluid ratio which is included in a parameter value of a bioelectrical impedance measured at a given frequency, the parameter value of the measured bioelectrical impedance is corrected and a body composition is estimated based on the corrected parameter value.
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14. A body composition measuring apparatus comprising:
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an electric current applying unit, a voltage measuring unit, a bioelectrical impedance computing unit, a correcting unit, and a body composition computing unit, wherein the electric current applying unit applies an electric current to a living body, the voltage measuring unit measures a voltage, the bioelectrical impedance computing unit computes a parameter associated with a bioelectrical impedance of a measured body part from the applied electric current and the measured voltage, the correcting unit corrects the parameter value associated with the measured bioelectrical impedance by use of a parameter representing an intracellular/extracellular fluid ratio which is included in the parameter value of the bioelectrical impedance measured at a given frequency, and the body composition computing unit computes an index associated with a body composition based on the corrected parameter value associated with the bioelectrical impedance. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification