Silvercrest SBF 76, Operation And Safety Notes, Page: 14 / 99

14 GB/CY
Evaluating results
Body Mass Index (BMI)
The body mass index (BMI) is a number frequently
used to assess body weight. The number is calcu-
lated from the body weight and height: body mass
index = body weight ÷ height
2
. The unit of measure
for the BMI is therefore [kg/m
2
]. For adults (20 years
and up), the BMI is then rated as:
Category BMI
Underweight Very severely
underweight
Moderately
underweight
Slightly
underweight <16
16-16.9
17-18.4
Normal weight 18.5-24.9
Overweight Overweight 25-29.9
Obese (over-
weight) Obese class I
Obese class II
Obese class III 30-34.9
35-39.9
≥ 40
Body fat percentage
The following body fat values in % are intended as
a guide.
For more information, please contact your
physician.
Male
Age low normal high very
high
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 %
Female
Age low normal high very
high
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 %
The values will often be lower in athletes. Depend-
ing on the sport, training intensity and the physical
condition the values may even be lower than the
guidelines specified. Please note, extremely low
values may indicate health hazards.
Water percentage
The amount of water in the body in % is typically
inside the following ranges:
Male
Age poor good excellent
10–100 <50 % 50–65 % >65 %
Female
Age poor good excellent
10 –100 <45 % 45–60 % >60 %
Body fat holds relatively little water. The water per-
centage in persons with a high body fat percentage
may therefore be below these guidelines. In endurance
athletes, on the other hand, the values may be
higher due to the low body fat percentage and
the high muscle mass.
The water percentage determined using these
diagnostic scales is not suitable for drawing medi-
cal conclusions on e.g. age-related water retention.
If necessary, consult your physician. The general
objective is a high water percentage.