What is the body mass index? When we need to compare and analyze the influence of a person's weight on the health of people of different heights, the body mass index is a neutral and reliable indicator.
Body mass index was originally designed as a statistical tool for public health research. When we need to know whether obesity is the cause of the disease, we can convert the patient's height and weight into body mass index, and then find out whether there is a linear correlation between this value and the incidence. However, with the development of science and technology, the current body mass index value is only a reference value. In order to truly measure whether a patient is obese, it is necessary to measure the patient's impedance by micro-electricity, so as to infer the patient's fat thickness. Therefore, the role of body mass index has gradually changed, from medical use to mass weight loss index.
Because the body mass index does not take into account a person's fat ratio, a person with an overweight body mass index may not actually be obese. For example, a person who practices fitness will have a body mass index of more than 30 because of his heavy muscle weight. If their body fat rate is low, they don't need to lose weight.
What does the body mass index mean? Body Mass Index, also known as body mass index, is an important index to measure obesity and standard weight. Body mass index (BMI) is a reference index to evaluate the ratio of weight to height.
Its calculation formula is weight (KG) divided by the square of height (m) (body mass index = kg /m2). The recognized health standard weight body mass index (BMI) is between 18 ~ 25, which is closely related to the total body fat and mainly reflects the overweight and obesity.
Because the body mass index calculates the proportion of body fat, it is more accurate to measure the risk of heart disease, hypertension and other diseases because of overweight than to identify them simply by weight.
Don't emphasize that the body mass index is not suitable for everyone. If you belong to the following situations, then the body mass index is not suitable for you.
1,1under 8 years old 2, athlete 3, doing weight training 4, pregnant or breastfeeding 5, body mass index, light weight body mass index, healthy weight body mass index, overweight body mass index, obese body mass index, BMI 18.5,18.5 = BMI.
The symbol of longevity "Body Mass Index" The general method for calculating this standard weight is "Body Mass Index (BMI)".
Body mass index = = weight (kg) ÷ (height (m) × height (m))
Example: weight 55kg, height160 cm; 55kg÷( 1.6m× 1.6m)= 2 1.5。
Less than19.8 ——————— thinner than19.8 ~ 24.2 ———————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————
Detection of fat content "body fat rate"
Body fat rate Body fat rate (%) = body fat (kg)÷ body weight (kg)× 100.
Even if it meets the standard of body mass index, it is not always possible to assert whether it is obese. To know the state of the body, another value is needed to measure the body fat rate. The so-called body fat ratio is the amount of body fat that subcutaneous fat and visceral fat account for the whole body weight. For a detailed explanation of body fat, please refer to.
Bodybuilding weight Bodybuilding weight = height (m) × height (m) × coefficient (20 error 0.5)
For example, the height 160cm, bodybuilding weight 5 1.2kg, and the average bodybuilding weight coefficient is 20, with an error of 0.5. For athletes and models, the coefficient is 17.