Biological information measurement device, biological information measurement method, and body composition measurement device
To accurately acquire body composition information using data acquired by another device. Thus, there is provided a body composition monitor with scale including a communication unit for allowing input of biological component information (cross-sectional area, site length, subcutaneous fat percentage, visceral fat percentage, etc.) of a living body measured with another device such as an MRI, where step of calculating the body composition of the living body based on the biological component information, an impedance detected by an impedance detection unit, and a weight measured by a load detection unit is executed.
1. A biological information measurement apparatus comprising:
a measurement device which acquires measurement value information of a living body;
a calculator which calculates biological information based on the measurement value information obtained by the measurement device; and
an input device which receives biological component information about a component of the living body measured in another device, together with date and time information at which the biological component information was received from the another device, wherein
the calculator is configured to:
determine whether or not the biological component information received from the another apparatus is effective based on the date and time information,
calculate the biological information based on the biological component information and the measurement value information if the biological component information is determined as being effective, the biological information being calculated based on the biological component information and the measurement value information using the following equation:
f (ρ)= a 2 ·1 /ρ+b 2 ·W+c 2 +S+d 2 ·e 2
calculate the biological information based on the measurement value information and not including the biological component information received from the another device if the biological component information is determined as being not effective, the biological information being calculated based on the measurement value information using the following equation:
f (ρ)= a 1 ·1 /ρ+b 1 ·W+c 1
wherein, a 1 , a 2 , b 1 , b 2 , c 1 , c 2 , d 2 and e 2 are predetermined constants, ρ is a resistivity of the living body, S is a cross-sectional area of a body site, L is a site length of the body site, and W is a weight of the living body.
2. A body composition measurement apparatus according to claim 1 , wherein
the measurement value information is an impedance or a weight of a living body; and
the biological information is a body composition.
3. The body composition measurement apparatus according to claim 1 , further comprising:
a target information creating device which creates target information about the body composition based on the body composition information, wherein
the target information creating device is configured to correct the target information based on the biological component information.
4. A biological information measurement method performed by a biological information measurement apparatus having: a measurement device which acquires measurement value information of a living body; and a calculation device which calculates biological information based on the measurement value information obtained by the measurement device; the biological information measurement method comprising:
receiving biological component information about a component of the living body measured in an another device, together with date and time information at which the biological component information was received from the another device,
executing a determination of whether or not the biological component information received from the another apparatus is effective based on the date and time information,
executing a biological component reflecting calculation if the biological component information is determined as being effective, which calculates the biological information based on the biological component information and the measurement value information, the biological information being calculated based on the biological component information and the measurement value information using the following equation:
f (ρ)= a 2 ·1 /ρ+b 2 ·W+c 2 +S+d 2 ·e 2
executing a general body composition calculation if the biological component information is determined as being not effective, which calculates the general body composition based on the measurement value information and not including the biological component information received from the another device, the general body composition being calculated based on the measurement value information using the following equation:
f (ρ)= a 1 ·1 /ρ+b 1 ·W+c 1
wherein, a 1 , a 2 , b 1 , b 2 , c 1 , c 2 , d 2 and e 2 are predetermined constants, ρ is a resistivity of the living body, S is a cross-sectional area of a body site, L is a site length of the body site, and W is a weight of the living body.
5. The body composition measurement apparatus according to claim 1 , wherein
the another device is at least one device that acquires the body composition component information selected from a group of a Magnetic Resonance Imaging (MRI) device, a Computed Tomography (CT) device, or a Dual Energy X-Ray Absorptiometry (DEXA) device.
6. The biological information measurement method according to claim 4 , wherein
the another device is at least one device that acquires the body composition component information selected from a group of a Magnetic Resonance Imaging (MRI) device, a Computed Tomography (CT) device, or a Dual Energy X-Ray Absorptiometry (DEXA) device.
7. The body composition measurement apparatus according to claim 1 , wherein the constants a 1 , b 1 and c 1 are determined based on height, age and sex of the living body.
8. The biological information measurement method according to claim 4 , wherein the constants a 1 , b 1 and c 1 are determined based on height, age and sex of the living body.