MC-180MA Multi-Frequency Body Composition Analyzer
description
Transcript of MC-180MA Multi-Frequency Body Composition Analyzer
MC-180MA Multi-Frequency Body Composition Analyzer
-Table of Contents
MC-180MA Main Feature Advanced Technology, Improvement
Advanced Technology Multi-Frequency, Reactance, Dilution method.
Measurement Result Fat %, TBW, ECW, ICW, Visceral Fat, etc.
MC-180MA Introduction
The Advanced Technology
MC-180MA provide accurate and reliable information by Multi-Frequency BIA
Reactance / Resistance data are output each frequency
New measurement items are added to existing models
MC-180MA Main Feature
Improvements New additional measurement items
by Multi-Frequency BIAIntra / Extra cellular waterVisceral fat, Muscle Balance etc.
High accuracy weighing (type approval class III)minimum value 50g (0-200kg), 100g (200-270kg)
High capacity weighingmax 270kg
Easy to operate and by color touch panel.320 x 240dots, 5.7inch, Color TFT Display
MC-180MA Main Feature
External printer connectable (option) (Only EPSON Stylus D88) speedy print onto the exclusive form
PC connectable by USBselectable communication port, USB / RS-232C
MC-180MA Main Feature
Convenient interface High speed measurement less than 20 sec.
(not include profile input time)
High speed start up less than 10 sec.
USB RS-232C Printer port
Multi-Frequency(1)
Low frequency current is unable to pass the cell membrane and it flows outside the cell.
High frequency current is able to penetrate the cell membrane and can also flow within the cell.
MC-180MA Advanced technology
low-frequency current
flowoutside of cell
transmitcell membrane
high-frequency current
Cell
ICW
ECW
Multi-Frequency(2)
MC-180MA Advanced technology
f = 0
f =
Cell membrane capacitor
ECW Resistance
ICW Resistance
朝横になって寝ていたため胴体部に水分が集まっている
夕方
細胞外
Reactance / Resistance(1)
The primary cause of daily fluctuation is changes in impedance value, because the ECW (i.e. intercellular water, blood, lymph fluid, etc.) moves between arms, legs and trunk. The change of impedance value significantly affects the estimation of body composition.
MC-180MA Advanced technology
ECW: Increase by daily fluctuation
ICW: No change
Morning Evening
Resistance (R)
Rea
ctan
ce (
X)
Impedance (Z)
Phase angle (θ)
Reactance / Resistance(2)
MC-180MA not only uses impedance values in the conventional way, but also adopts reactance values that can be acquired by breaking down impedance values under a regression formula to reduce daily fluctuation.
MC-180MA Advanced technology
Dilution method(1)
Total body water (TBW) and Extra cellular water (ECW) are measured by correlations of dilution method and BIA.
A known concentration of marker is administered to the body, and the total water content of the body is calculated from the degree of dilution.
MC-180MA Advanced technology
Body Water
Marker
Marker TBW : D2OECW : NaBr
Dilution method(2)
Alcohol amount: 0.4 littleWater : ?0.4 / (? + 1 ) = 1% ? = 0.4 / 0.01 – 1
? = 40 – 1 ? = 39 little
MC-180MA Advanced technology
Marker
1 little40%(0.4little) 1%
? little ?+1 little
Comparison with the currentsModel Name BC-418 BC-420 MC-180
Weight Measurement 0.1kg/200kg 0.1kg/270kg 0.05kg/1-200kg
0.1kg/200-270kg
Number of electrodes 8polar 4polar 8polar
Measurement Frequency
50 k Hz 50 k Hz 5, 50, 250,
500 k Hz
Measurement Impedance
Impedance Impedance Resistance
Reactance
Measurement Range 150 ~ 1200Ω 150 ~ 1200Ω 75 ~ 1500Ω
Input device Membrane switch
Membrane switch
Touch panel
Display device 3 Rows, 5 Digits
LCD
3 Rows, 5 Digits
LCD
320 × 240 dots
TFT color LCD
Data Interface RS-232C RS-232C USB, RS-232C
Printer internal thermal printer
internal thermal printer
external A4
printer (option)
Comparison of resultsModel Name BC-418 BC-420 MC-180
FAT % DXA(1) DXA(2) DXA(3)
TBW, TBW % from FFM Dilution method Dilution method
ICW , ECW Dilution method
Visceral Fat rating MRI MRI
BMR breath gas analysis
breath gas analysis
breath gas analysis
Muscle mass DXA DXA DXA
Bone mass DXA DXA
Segmental read out DXA DXA
Fat % DXA DXA
Muscle mass DXA DXA
Fat % Score Average
Muscle Score Average
Body FatIn MC-180, Body Fat % and Fat Mass
are measured by correlation of DXA and BIA.
MC-180MA Technical Notes
MC-180 evaluates segmental Fat data. These data is used to check a figure and body balance.
y = 0.9646x + 1.0186R = 0.93
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60
0 10 20 30 40 50 60
MC- 180MA %FAT
DXA %
FAT
Validation data Fat %
MC-180MA Technical Notes-reference-
Resistance (R)
Rea
ctan
ce (
X)
Impedance (Z)
Phase angle (θ)
Fat Free Mass (FFM)
TANITA has been measuring FFM by using the DXA always. In MC-180, TANITA achieved higher accuracy by adopting
advanced technology.Multi-Frequency BIA and Reactance measurement.
MC-180MA Technical Notes
+
y = x + 0.09R = 0.98
0
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40
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100
0 20 40 60 80 100
MC- 180MA FFM
DXA F
FM
Validation data FFM
MC-180MA Technical Notes-reference-
Total Body Water, Intra / Extra Water
TBW ECW and ICW including blood and lymphECW consists interstitial fluid, blood plasma, lymph etc.
Edema is the state that interstitial fluid has increased.ICW the fluid that exists in the cell
ICW tends to increase to the muscular person because muscle tissue contains a lot of water.
MC-180MA Technical Notes
TBW (45-65%) fat, protein, mineral etc.
ECW (30-50%) ICW
General transition of body waterThis is one example. It is neither a normal value nor a standard value.
ICW
30%ICW
35-40%
ICW
30%
TB
W75%
EC
W40%
ICW
35%
Body w
eight
TB
W65%
EC
W30%
ICW
35%
TB
W60-65%
EC
W20-30%
TB
W55%
EC
W25%
TB
W50%
EC
W20%
ICW
30%
TB
W50%
EC
W25%
babynewborn infant child adult –male- adult -female- elderly adult
-reference-
TBW ECW ICW
newborn 75 40 35
infant 65 30 35
child 60-65 20-30 35-40
male 55 25 30
female 50 20 30
Factor that influences body waterIn elderly , ICW decreases because the muscle mass
reduce.In female, TBW and ICW are little than male,
because the amount of muscle is comparatively few.Adipose tissue don't contain water,
therefore, in obese person, ICW is a little.
MC-180MA Technical Notes
y = 0.9999x + 0.0026R = 0.9715
0
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60
80
0 20 40 60 80
MC- 180MA TBW
Dilution T
BW
Validation data TBW
MC-180MA Technical Notes-reference-
Visceral Fat Rating
In TANITA body composition analyzer, visceral fat rating is evaluated by correlations of the Visceral Adipose Tissue area in MRI and BIA.
MC-180MA Technical Notes
BMI 25 BMI 25(Age 27 Male) (Age 61 Male)
Visceral fat is accumulated when becoming aged.
TANITA has been researching the method of measuring the visceral fat, and established the method to estimate it from BIA.
Rating from 1 - 12
Indicates you have a healthy level of visceral fat. Continue monitoring your rating to ensure that it stays within the healthy range.
Rating from 13 –
Indicates you have an excess level of visceral fat. Consider making changes in your lifestyle possibly through diet.
y = 0.99x - 0.10R = 0.85
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200
250
0 50 100 150 200 250
MC-180MA VFA (cm2)
MRI VFA (cm2 )
Validation data Visceral Fat-reference-
MC-180MA Technical Notes
Basal Metabolic Rate (BMR)
The BMR is more determined by the Fat Free Mass (FFM) than by the body weight.
MC-180MA Technical Notes
In MC-180, the BMR is estimated by the correlation of Breath Gas analysis and FFM. Of course, FFM is measured by the BIA method.
Validation data BMR
R = 0.900
MC-180MA Technical Notes-reference-
Muscle MassIn MC-180, the muscle mass is
measured by the method using the correlation of DXA and BIA.
MC-180MA Technical Notes
MC-180 evaluates segmental muscle mass. These are convenient to check the effect of training and rehabilitation.
y = 0.9769x + 1.2902R = 0.97
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20 40 60 80 100 120
BIA Muscle mass
DXA L
ST (Mus
cle mas
s)
Validation data Muscle Mass
MC-180MA Technical Notes-reference-
Estimated Bone Mass
This feature indicates the amount of bone (bone mineral level, calcium or other minerals) in the body.
•Persons described below may obtain varying readings and should take the values given for reference purposes only.
- Elderly persons - Women during or after menopause- People receiving hormone therapy•“Estimated bone mass” is a value estimated statistically based on its
correlation with the fat-free amount (tissues other than the fat). "Estimated bone mass" does not give a direct judgment on the hardness or strength of the bones or the risks of bone fractures. If you have concerns over your bones, you are recommended to consult a specialist physician.
MC-180MA Technical Notes
Female : Average of estimated bone mass (kg) Male : Average of estimated bone mass (kg)Weight Weight
Less than 50kg 50kg-75kg 75kg and up Less than 65kg 65kg-95kg 95kg and up
1.95kg 2.40kg 2.95kg 2.66kg 3.29kg 3.69kg
y = 1.0066x + 0.0164R2 = 0.78R = 0.88SEE = 0.30p < 0.0001
0.0
1.0
2.0
3.0
4.0
5.0
6.0
0.0 1.0 2.0 3.0 4.0 5.0 6.0
BIA Bone mass
DXA B
one mas
s
MALEFEMALE
Validation Data Bone Mass-reference-
MC-180MA Technical Notes
y = 0.9997x + 0.0017
R2 = 0.3911
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80
0 20 40 60 80
MC- 180MA ECW
Dilution E
CW
y = 1.0002x - 0.0012
R2 = 0.5451
0
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0 20 40 60 80
MC- 180MA ECW
Dilution E
CW
Validation data ECW
MC-180MA Technical Notes-reference-
-Male- -Female-