Specifications

10
7.Body composition index
1.BMI = weight (KG) / height (M) squared
BMI (Body Mass Index), an index of body mass. It is widely used internationally because it has a
lot to do with the amount of fat contained in the body.
Judgement standard:
2.Body fat percentage (BFR):
The body fat percentage is the proportion of body fat in body weight. It should be judged from the
body fat rate whether it is obese or not, not only based on body weight.
Principle of parameter acquisition: BIA (bioelectrical impedance analysis) is used to measure the
impedance value of the human body, and then the fat content is calculated. The tissue that is
easily conductive in human tissues is water-rich tissues (such as muscles and blood vessels), and
the adipose tissue is almost non-conductive. It is the use of different electrodes to send a weak
current to the human body, and then to measure the body resistance, using the difference in
impedance between the body's fat and non-fat tissue, to calculate the body composition.
Excessive body fat can cause: cancer, diabetes, high blood pressure, cardiovascular disease and
other diseases.
3.Body type judgment
Determine body size based on body fat percentage and muscle mass.
Thin
WHO evaluation criteria
BMI18.5 18.5≤BMI25.0 25.0≤BMI30.0
BMI≥30.0
Overweight ObesityStandard
Female
18- 39 5 - 20% 20- 27% 27 -34% 34- 39%
Male
18- 39
years old
5 - 10% 10- 16% 16 -21% 21- 26%
26%
More than
27%
More than
29%
More than
39%
More than
40%
More than
41%
More than
40- 59
years old
5 - 11% 11- 17% 17 -22% 22- 27%
60
years old
5 - 13% 13- 19% 19 -24% 24- 29%
Determination
years old
years old
years old
Determination
Thin Standard- Standard+ Mild obesity
Severe obesity
Thin Standard- Standard+ Mild obesity
Severe obesity
21- 28% 28 -35% 35- 40%
40- 59
5 - 21%
60 5 - 22% 22- 29% 29 - 36% 36- 41%
Obesity
Mild obesity
+ Standard
Decision
table
- Standard
Spare
Invisible obesity Obese Shoulder fat type
Lack of exercise
Muscle mass determination
Standard Muscutarity
Standard More ( + )
Thin Lean muscle type
Very muscular type
Less ( - )