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


External printer connectable (option) (Only EPSON Stylus D88) speedy print onto the exclusive form

PC connectable by USBselectable communication port, USB / RS-232C


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)


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.


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.


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.


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


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

0

10

20

30

40

50

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.


+

y　=　x　+　0.09R　=　0.98

0

20

40

60

80

100

0 20 40 60 80 100

MC- 180MA　FFM

DXA　F

FM

Validation data FFM


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.


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.


y　=　0.9999x　+　0.0026R　=　0.9715

0

20

40

60

80

0 20 40 60 80

MC- 180MA　TBW

Dilution　T

BW

Validation data TBW


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.


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

0

50

100

150

200

250

0 50 100 150 200 250

MC-180MA　VFA　(cm2)

MRI　VFA　(cm2 )

Validation data Visceral Fat-reference-


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.

Validation data BMR

R = 0.900


Muscle MassIn 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.

y　=　0.9769x　+　1.2902R　=　0.97

20

40

60

80

100

120

20 40 60 80 100 120

BIA　Muscle　mass

DXA　L

ST　(Mus

cle　mas

s)

Validation data Muscle Mass


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.


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-


y　=　0.9997x　+　0.0017

R2　=　0.3911

0

20

40

60

80

0 20 40 60 80

MC- 180MA　ECW

Dilution　E

CW

y　=　1.0002x　- 　0.0012

R2　=　0.5451

0

20

40

60

80

0 20 40 60 80

MC- 180MA　ECW

Dilution　E

CW

Validation data ECW


-Male- -Female-

mc-180ma multi-frequency body composition analyzer

Documents

ma advanced technologyf

ma advanced technologyecw

high frequency current

multifrequency bia intra

impedance values

cellular water ecw

cellular water visceral

intercellular water