MC-180MA
Multi-Frequency Body Composition Analyzer
MC-180MA Introduction
-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 Main Feature
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 BIA
Intra / Extra cellular water
Visceral fat, Muscle Balance etc.
High accuracy weighing (type approval class III)
minimum value 50g (0-200kg), 100g (200-270kg)
High capacity weighing
max 270kg
Easy to operate and by color touch panel.
320 x 240dots, 5.7inch, Color TFT Display
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.

External printer connectable (option)
(Only EPSON Stylus D88)
speedy print onto the exclusive form
USB
RS-232C
PC connectable by USB
selectable communication port, USB / RS-232C

Printer port
MC-180MA Advanced technology
Multi-Frequency(1)
flow
outside of cell
Cell
ICW
transmit
cell membrane
ECW
low-frequency current
high-frequency current
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
Multi-Frequency(2)
ICW Resistance
f=0
f=
ECW Resistance
Cell membrane
capacitor
MC-180MA Advanced technology
Reactance / Resistance(1)
朝
Morning
夕方
横になって寝ていたため胴体部に水分が集まっている
細
胞
外
Evening
ECW: Increase by daily fluctuation
ICW: No change
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
Reactance (X)
Reactance / Resistance(2)
Impedance (Z)
Phase angle (θ)
Resistance (R)
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)
Body Water
Marker
TBW : D2O
ECW : NaBr
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
Dilution method(2)
1 little
40%
(0.4little)
? little
1%
?+1 little
Alcohol amount: 0.4 little
Water : ?
0.4 / (? + 1 ) = 1%
? = 0.4 / 0.01 – 1
? = 40 – 1
? = 39 little
Comparison with the currents
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
50ｋHz
50ｋHz
5, 50, 250,
500ｋHz
Measurement
Impedance
Impedance
Impedance
Resistance
Reactance
Measurement Range
150～1200Ω
150～1200Ω
75～1500Ω
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
internal thermal
printer
internal thermal
printer
external A4
printer (option)
Model Name
Input device
Printer
Comparison of results
Model Name
BC-418
BC-420
MC-180
FAT %
DXA(1)
DXA(2)
DXA(3)
TBW, TBW %
from FFM
Dilution method Dilution method
Dilution method
ICW , ECW
MRI
MRI
breath gas
analysis
breath gas
analysis
breath gas
analysis
DXA
DXA
DXA
DXA
DXA
Visceral Fat rating
BMR
Muscle mass
Bone mass
DXA
DXA
Fat %
DXA
DXA
Muscle mass
DXA
DXA
Segmental read out
Fat % Score
Average
Muscle Score
Average
MC-180MA Technical Notes
Body Fat
In MC-180, Body Fat % and Fat Mass
are measured by correlation of
DXA and BIA.
MC-180 evaluates segmental
Fat data.
These data is used to check
a figure and body balance.
MC-180MA Technical Notes
-reference-
Validation data Fat %
60
y = 0.9646x + 1.0186
R = 0.93
50
DXA % FAT
40
30
20
10
0
0
10
20
30
40
M C - 1 8 0 M A % FAT
50
60
MC-180MA Technical Notes
Fat Free Mass (FFM)
Reactance (X)
+
Impedance (Z)
Phase angle (θ)
Resistance (R)
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
-reference-
Validation data FFM
100
y = x + 0.09
R = 0.98
DXA FFM
80
60
40
20
0
0
20
40
60
M C - 1 8 0 M A FFM
80
100
MC-180MA Technical Notes
Total Body Water, Intra / Extra Water
TBW (45-65%)
ECW (30-50%)
fat, protein, mineral etc.
ICW
TBW ECW and ICW including blood and lymph
ECW 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
-reference-
General transition of body water
This is one example.
It is neither a normal value nor a standard value.
ECW
%
ECW ICW
%
%
Factor that influences body water
In 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.
TBW
%
adult –male-
ECW ICW
%
%
50
30
25
20
TBW
%
55
ICW
%
child
ECW
%
infant
35
40
25
TBW
%
35
20
30
ICW
- %
newborn
baby
ICW
%
ICW
%
35
60
65
TBW
- %
65
ECW
- %
30
TBW
%
75
ECW
%
TBW
%
Body weight
40
50
30
adult -female-
30
elderly adult
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
MC-180MA Technical Notes
-reference-
Validation data TBW
80
y = 0.9999x + 0.0026
R = 0.9715
Dilu t io n T BW
60
40
20
0
0
20
40
M C - 1 8 0 M A T BW
60
80
MC-180MA Technical Notes
Visceral Fat Rating
Visceral fat is accumulated when
becoming aged.
TANITA has been researching the
method of measuring the visceral
BMI 25
BMI 25
fat, and established the method
(Age 27 Male)
(Age 61 Male)
to estimate it from BIA.
In TANITA body composition analyzer, visceral fat rating is evaluated by
correlations of the Visceral Adipose Tissue area in MRI and 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.
MC-180MA Technical Notes
-reference-
Validation data Visceral Fat
250
y = 0 .9 9 x - 0 .1 0
R = 0 .8 5
2
MRI VFA (cm )
200
150
100
50
0
0
50
100
150
MC- 1 8 0 MA VFA ( c m 2 )
200
250
MC-180MA Technical Notes
Basal Metabolic Rate (BMR)
The BMR is more determined by
the Fat Free Mass (FFM) than
by the body weight.
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.
MC-180MA Technical Notes
-reference-
Validation data BMR
R = 0.900
MC-180MA Technical Notes
Muscle Mass
In MC-180, the muscle mass is
measured by the method using
the correlation of DXA and BIA.
MC-180 evaluates segmental
muscle mass.
These are convenient to
check the effect of training
and rehabilitation.
MC-180MA Technical Notes
-reference-
Validation data Muscle Mass
DXA L ST (Muscle mass)
120
y = 0.9769x + 1.2902
R = 0.97
100
80
60
40
20
20
40
60
80
BIA Muscle mass
100
120
MC-180MA Technical Notes
Estimated Bone Mass
Female : Average of estimated bone mass (kg)
Weight
Less than 50kg 50kg-75kg
75kg and up
1.95kg
2.40kg
2.95kg
Male : Average of estimated bone mass (kg)
Weight
Less than 65kg 65kg-95kg
95kg and up
2.66kg
3.29kg
3.69kg
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
-reference-
Validation Data Bone Mass
6.0
y = 1.0066x + 0.0164
R2 = 0.78
R = 0.88
SEE = 0.30
p < 0.0001
DXA Bone mass
5.0
4.0
3.0
2.0
MAL E
FEMAL E
1.0
0.0
0.0
1.0
2.0
3.0
4.0
BIA Bone mass
5.0
6.0
MC-180MA Technical Notes
-reference-
Validation data ECW
80
80
y = 0 .9 9 9 7 x + 0 .0 0 1 7
R 2 = 0 .3 9 1 1
60
Di l u t i o n EC W
Di l u t i o n EC W
60
40
40
20
20
0
0
0
20
40
MC- 1 8 0 MA ECW
-Male-
y = 1 .0 0 0 2 x - 0 .0 0 1 2
R 2 = 0 .5 4 5 1
60
80
0
20
40
MC- 1 8 0 MA ECW
-Female-
60
80