Apparatus for measuring basal metabolism

• US 6,477,409 B2
• Filed: 08/02/2001
• Issued: 11/05/2002
• Est. Priority Date: 10/04/2000
• Status: Active Grant

• Current Assignee: Tanita Corporation (Tanita)
• Original Assignee: Tanita Corporation (Tanita)
• Inventors: Sato, Hitoshi, Sakata, Kazuhiko, Kodama, Miyuki, Heymsfield, Steven B.
• Primary Examiner(s): HINDENBURG, MAX F
• Application Number:
  US09/920,297
• Publication Number:
  US 20020040197A1
• Time in Patent Office: 460 Days
• Field of Search: 600/300, 600/547, 600/587
• US Class Current: 600/547
• CPC Class Codes: A61B 2560/0468 Built-in electrodes
• CPC Class Codes: A61B 5/0537 Measuring body composition by impedance, e.g. tissue hydration or fat content
• CPC Class Codes: A61B 5/4869 Determining body composition

Abstract

An apparatus for measuring basal metabolism includes a device to input individual data, for example an age of a subject; a device to measure bioelectrical impedance of the subject; a device for calculation of fat-free mass on the basis of the individual data and the impedance;, and a device for calculation of basal metabolism of the subject on the basis of a reciprocal of the age and the fat-free mass. The basal metabolism can be calculated using the formula represented by BMR=A×FFM+B×(1/age)+C, in which BMR is basal metabolism (kcal/day), FFM is fat-free mass (kg), and A, B, and C are constants.

Claims

1. An apparatus for measuring basal metabolism, comprising:

an input device for receiving individual data, said individual data including an age of a subject;

a measuring device for determining bioelectrical impedance of the subject;

a fat-free mass calculation device for determining fat-free mass using said individual data from said input device and said impedance from said measuring device; and

a basal metabolism calculation device for determining basal metabolism of the subject using said fat-free mass from said fat-free mass calculation device and a reciprocal of said age from said input device.

2. The invention according to claim 1, wherein the basal metabolism is calculated using a formula represented by BMR=A×

FFM+B×

(1/age)+C, wherein BMR is basal metabolism, FFM is fat-free mass, and A, B, and C are constants.

3. The invention according to claim 1, wherein the basal metabolism is calculated using a formula represented by BMR=A×

FFM²+B×

FFM+C×

(1/age)+D, wherein BMR is basal metabolism, FFM is fat-free mass, and A, B, C, and D are constants.

4. An apparatus for measuring basal metabolism, comprising:

an input device for receiving individual data, said individual data including an age and a body weight of a subject;

a measuring device for determining bioelectrical impedance of the subject;

a fat-free mass calculation device for determining fat-free mass using said impedance from said measuring device and a reciprocal of said individual data from said input device; and

a basal metabolism calculation device for determining basal metabolism of the subject using said fat-free mass from said fat-free mass calculation device and said age and said body weight from said input device.

5. The invention according to claim 4, wherein the basal metabolism is calculated using a formula represented by BMR=A×

FFM+B×

(1/age)+C×

body weight+D, wherein BMR is basal metabolism, FFM is fat-free mass, and A, B, C, and D are constants.

6. The invention according to claim 4, wherein the basal metabolism is calculated using a formula represented by BMR=A×

FFM²+B×

FFM+C×

(1/age)+D×

body weight+E wherein BMR is basal metabolism, FFM is fat-free mass, and A, B, C, D, and E are constants.

7. The invention according to claim 4, wherein the body weight of the subject is manually inputted into said input device.

8. The invention according to claim 4, wherein the body weight of the subject is received into the input device as a signal from a body weight measuring device for determining the body weight of the subject.

9. The invention according to claim 4, wherein the body weight of the subject is received into the input device as a signal from a body weight measuring device for determining the body weight of the subject simultaneously when said impedance is determined.