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The measuring principle
This scale works on the principle of B.I.A. (bioelectrical impedance analysis). This involves the calculation of body
content within seconds, using a current that is not noticeable, is completely non-hazardous and does not pose
any risk.
When this measurement of the electrical resistance (impedance) is considered alongside constants and/ or indi-
vidual values (age, height, gender, activity level), the body fat percentage and other variables in the body can be
calculated. Muscle tissue and water conduct electricity well and therefore have a lower resistance. In contrast,
bones and fat tissue have low conductivity as the fat cells and bones are barely able to conduct the current due
to very high levels of resistance.
Please note that the values calculated by the diagnostic scale only represent an approximation of the actual medi-
cal analytical values for the body. Only a specialist doctor can precisely establish the body fat, body water, muscle
percentage and bone structure using medical methods (e.g. computer tomography).
3. Evaluation of results
Body fat percentage
The following body fat percentages are for guidance (contact your physician for further information).
Man
Age
very good
good
10–14
<11%
11–16%
15-19
<12%
12-17%
20-29
<13%
13-18%
30-39
<14%
14-19%
40-49
<15%
15-20%
50-59
<16%
16-21%
60-69
<17%
17-22%
70-100
<18%
18-23%
A lower value is often found in athletes. Depending on the type of sports, training intensity and physical constitu-
tion, values may result which are below the recommended values stated.
It should, however, be noted that there could be a danger to health in the case of extremely low values.
Body water:
The body water percentage (%) is normally within the following ranges:
Man
Age
poor
good
10-100
<50
50-65%
Body fat contains relatively little water. Therefore persons with a high body fat percentage have body water per-
centages below the recommended values. With endurance athletes, however, the recommended values could be
exceeded due to low fat percentages and high muscle percentage.
Body water measurement with this scale is not suitable for drawing medical conclusions, for example concerning
age-related water retention. If necessary ask your physician.
Basically, a high body water percentage should be the aim.
average
poor
16,1–21%
>21,1%
17,1-22%
>22,1%
18,1-23%
>23,1%
19,1-24%
>24,1%
20,1-25%
>25,1%
21,1-26%
>26,1%
22,1-27%
>27,1%
23,1-28%
>28,1%
very good
>65
Woman
Age
very good
good
10-14
<16%
16-21%
15-19
<17%
17-22%
20-29
<18%
18-23%
30-39
<19%
19-24%
40-49
<20%
20-25%
50-59
<21%
21-26%
60-69
<22%
22-27%
70-100
<23%
23-28%
Woman
Age
poor
good
10-100
<45
45-60%
13
average
poor
21,1-26%
>26,1%
22,1-27%
>27,1%
23,1-28%
>28,1%
24,1-29%
>29,1%
25,1-30%
>30,1%
26,1-31%
>31,1%
27,1-32%
>32,1%
28,1-33%
>33,1%
very good
>60
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