Other Functions - Beurer BF 180 Mode D'emploi

Body mass index (BMI)
The body mass index (BMI) is a number that is often called upon to evaluate body weight. The figure is
calculated from body weight and height. The formula is: body mass index = body weight : height². The
measurement unit for BMI is [kg/m²]. According to the BMI, weight is classified for adults (20 years and
over) using the following values:
Category
Underweight
Normal weight
Overweight
Obese (overweight)
Limitations
When calculating body fat and the other values, unusual and implausible results may occur in the case of:
• Children under approx. 10 years of age.
• Performance athletes and body-builders.
• Persons with a fever, persons undergoing dialysis, persons with oedema symptoms and persons suffer-
ing from osteoporosis.
• Persons taking cardiovascular medicine (affecting the heart and vascular system).
• Persons taking vasodilative or vasoconstrictive medication.
• Persons with significant anatomical abnormalities in their legs compared with their overall body height
(leg length significantly shorter or longer).
Temporal context of the results
Note: Please note that only the long-term trend is important. Brief deviations in weight within a few
days are normally caused by loss of fluids.
The interpretation of the results is based on changes in total body weight, percentage of body fat, body
water and muscle content, as well as on the length of time over which these changes occur.
Rapid changes within the scope of a few days are to be considered separately from medium-term
changes (in the scope of weeks) and long-term changes (months).
It can be said as a basic rule that short-term changes in weight are almost entirely changes in water con-
tent, whereas medium-term and long-term changes may also relate to the fat percentage and the muscle
percentage.
• If your weight drops in the short term but your body fat percentage increases or stays the same, you
have only lost water, for example following a training session, visit to the sauna or a diet aimed only at
fast weight loss.
• If your weight increases in the medium term and your body fat percentage drops or stays the same, you
may have built up valuable muscle mass.
• If your weight and body fat percentage both fall at the same time, then your diet is working – you are
losing fat mass.
• Ideally, you should support your diet with physical activity, fitness or strength training. This enables you
to increase your muscle percentage in the medium term.
• Body fat, body water and muscle percentages should not be totalled (muscle tissue also contains com-
ponents made of body water).

9.3 Other functions

Replacing the batteries/low battery indicator
Your scale is equipped with a low battery indicator. If you operate the scale with flat batteries, "Lo" will
appear on the display and the scale will automatically switch off. In this case, the batteries must be
replaced (2x 3V CR 2032).
Severely underweight
Underweight
Slightly underweight
Overweight
Class I obesity
Class II obesity
Class III obesity
19
BMI
< 16
16-16.9
17-18.4
18,5-24,9
25-29,9
30-34.9
35-39.9
≥ 40