Body Mass Index (Bmi) - Beurer BG 21 Mode D'emploi

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.
Muscle percentage:
The muscle percentage (%) is normally within the following ranges:
Man
Age low
10–14 <44%
15–19 <43%
20–29 <42%
30–39 <41%
40–49 <40%
50–59 <39%
60–69 <38%
70–100 <37%
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)
BMR
The basal metabolic rate (BMR) is the amount of energy required by the body at complete rest to maintain its basic
functions (e.g. while lying in bed for 24 hours). This value largely depends on weight, height and age. It is displayed
on the diagnostic scale in kcal/day units using the scientifically recognized Harris-Benedict formula.
Your body requires this amount of energy in any case and it must be reintroduced into your body in the form of
nutrition. If you take on less energy over the longer term, this can be harmful to your health.
AMR
The active metabolic rate (AMR) is the amount of energy required daily by the body in its active state.
The energy consumption of a human being rises with increasing physical activity and is measured on the diagnos-
tic scale in relation to the degree of activity entered (1– 5 ).
To maintain your existing weight, the amount of energy used must be reintroduced into the body in the form of food
and drink. If less energy is introduced than is used over a longer period of time, your body will obtain the difference
largely from the amount of fat stored and your weight will reduce. If, on the other hand, over a longer period of time
more energy is introduced than the total active metabolic rate (AMR) calculated, your body will be unable to burn
off the excess energy, and the excess will be stored in the body as fat and your weight will increase.
normal high
44–57% >57%
43–56% >56%
42–54% >54%
41–52% >52%
40–50% >50%
39-48% >48%
38–47% >47%
37–46% >46%
Severely underweight
Underweight
Slightly underweight
Overweight
Class I obesity
Class II obesity
Class III obesity
Woman
Age low
10–14 <36%
15–19 <35%
20–29 <34%
30–39 <33%
40–49 <31%
50–59 <29%
60–69 <28%
70–100 <27%
BMI
< 16
16-16.9
17-18.4
18.5-25
25.1-29.9
30-34.9
35-39.9
≥ 40
14
normal high
36–43% >43%
35–41% >41%
34–39% >39%
33–38% >38%
31–36% >36%
29–34% >34%
28–33% >33%
27–32% >32%