Beurer BG 21 - Evaluation of Measurement Results; Body Fat Percentage Evaluation; Body Water Percentage Evaluation

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– Stand still during the measurement.
– Wait several hours after unusually strenuous activity.
– Wait approx. 15 minutes after getting out of bed so that the water in your body can be distributed.
– Remember that only long-term trends are important. Short-term changes in weight within a few days are usually
caused by a loss of fluid. Body water plays an important role towards our general wellbeing.
Themeasurementisnotreliablefor:
– Childrenunderapprox.10yearsofage.
– Competitiveathletes,bodybuilders.
– Pregnant women.
– Persons with fever, undergoing dialysis, with symptoms of edema or osteoporosis.
– Persons taking cardiovascular medication.
– Persons taking vascodialating or vascoconstricting medications.
– Personswithsubstantialanatomicaldeviationsinthelegsrelativetotheirtotalheight(leglengthconsiderably
shorterorlongerthanusual).
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Woman
Age very good good average poor
10–14 <11% 11–16% 16,1–21% >21,1%
15-19 <12% 12-17% 17,1-22% >22,1%
20-29 <13% 13-18% 18,1-23% >23,1%
30-39 <14% 14-19% 19,1-24% >24,1%
40-49 <15% 15-20% 20,1-25% >25,1%
50-59 <16% 16-21% 21,1-26% >26,1%
60-69 <17% 17-22% 22,1-27% >27,1%
70-100 <18% 18-23% 23,1-28% >28,1%
Age very good good average poor
10-14 <16% 16-21% 21,1-26% >26,1%
15-19 <17% 17-22% 22,1-27% >27,1%
20-29 <18% 18-23% 23,1-28% >28,1%
30-39 <19% 19-24% 24,1-29% >29,1%
40-49 <20% 20-25% 25,1-30% >30,1%
50-59 <21% 21-26% 26,1-31% >31,1%
60-69 <22% 22-27% 27,1-32% >32,1%
70-100 <23% 23-28% 28,1-33% >33,1%
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     Woman
Age poor good very good
10-100 <50% 50-65% >65
Age poor good very good
10-100 <45% 45-60% >60
– OK +
– OK +