With the improvement of living standards, many people have a high obesity rate. In fact, obesity not only affects the image problem, but also affects people's health. Below, I sorted out the calculation formula of bmi for boys.
The formula 1 bmi for boys refers to height and body mass index. Its formula is: body mass index (BMI) = weight (kg) ÷ height 2 (m). For example, a person's height is 1.78 meters and his weight is 70 kilograms.
Body mass index = 70/( 1.78 2) = 22.09 (kg/m 2) When the body mass index is 18.5 ~ 24.9, it is normal.
Normal weight will not only affect the image of the whole person, but also have a great impact on health. In life, how to judge whether your weight is standard? What is the standard of measurement? Let's learn about this problem together!
How to judge whether your weight is healthy?
Generally speaking, I suggest that I calculate my body mass index, which is = weight/(height) 2. The calculation results can meet the following criteria:
Overweight: body mass index = 25-30.
Mild obesity: body mass index >; 30
Moderate obesity: body mass index >; 35
Severe obesity: body mass index >; 40
If you are underweight or overweight, you need to gain weight and lose weight. Let's learn about the methods of losing weight and gaining weight respectively! Let me talk to you about ways to lose weight first:
1, keep exercising
Most overweight people don't like exercise. Doing exercise can effectively help burn excess fat in the body and keep fit. However, it should be noted that exercise is something that needs to be persisted for a long time, and good results will not be seen if you persist for a day or two. Exercise in life must be gradual, the intensity should be small at first, and then increase the intensity after the body gradually adapts.
Step 2 control your diet
It is also important for overweight people to control their diet. Give up high-fat, high-calorie, high-sugar foods in life and have a light diet. Eat more high-fiber fruits and vegetables and control daily calorie intake. Keeping the calorie intake less than the calorie intake helps to lose weight.
3, regular work and rest
If you want to lose weight, it is also important to maintain a good work and rest. Staying up late for a long time and lack of sleep will lead to the disorder of endocrine system in the body and the normal function of various organs. It is easy to cause lipid metabolism disorder in the body, which is not conducive to people who want to lose weight to control their weight.
So how to gain weight for people who are underweight?
The first is diet conditioning. Thin people should start with diet in their daily life, and ensure adequate intake of protein and balanced intake of fresh fruits and vegetables. You can also eat some foods rich in fat and carbohydrates. Poultry, fish, sheep and other foods are also good choices. It should be noted that you must not blindly eat some junk food to gain weight, which is not good for your health.
Secondly, proper exercise. For people with low weight, proper exercise is also a good choice. Because exercise can promote metabolism and blood circulation in the body, the peristalsis speed of gastrointestinal tract will also be accelerated. It can greatly increase the absorption capacity of certain nutrients in our gastrointestinal tract. For people who are underweight, insisting on exercise also helps to gain weight.
Calculation formula of bmi index for boys 2 Calculation formula of body mass index:
Body mass index (BMI) = weight (kg) ÷ height 2 (m)
For example: 70kg (1.75x1.75) = 22.86.
Body mass index (BMI) is a number obtained by dividing the kilograms of weight by the square of the meters of height. It is a widely used international standard to measure the degree of obesity and health. Mainly used for statistical purposes, when we need to compare and analyze the impact of a person's weight on the health of people of different heights, the body mass index value is a neutral and reliable indicator.
Extended data:
Adult body mass index value:
Too light: less than 18.5
Normal: 18.5-23.9
Overweight: 24-27 years old
Obesity: 28-32 years old
Very obese, over 32 years old.
Because of the error, the body mass index can only be used as one of many standards to evaluate the individual's weight and health status.
According to the summary analysis report of China population data in 1990s, the China Obesity Working Group put forward the obesity standard suitable for adults in China for the first time:
Body mass index greater than or equal to 24 is overweight, and greater than or equal to 28 is obese; Male waist circumference is greater than or equal to 85 cm, and female waist circumference is greater than or equal to 80 cm.
The bmi index of boys is calculated by Formula 3: Body Mass Index, that is, Body Mass Index. It calculates whether your weight is overweight, standard weight or underweight according to your height.
However, because the reference standard of body mass index is only height and weight, there is no way to accurately measure body components, such as fat content and muscle content.
Therefore, in addition to body mass index, more accurate inbody has become a new standard. It can measure more detailed body data. This article will tell you what is the body mass index value, how to calculate it, and how it is different from inbody.
Calculation formula of body mass index
The body mass index algorithm has a set of fixed formulas: weight (kg) ÷ square of height (m).
For example, if a person 160 weighs 50 kg, then her body mass index is 50/ 1.6= 19.5, and so on.
What is the body mass index?
Body mass index, also known as "body mass index", can calculate the ratio of birth height to weight, which was once used as an index of obesity. However, because only height and weight are used as calculation data, there is no way to reflect the body composition (such as muscle mass and body fat), so even two people with the same body mass index may have great differences in figure, which is why puffs with "standard body mass index but high body fat" appear.
What do you think of the body mass index range?
There is also an interval for judging whether the weight is up to standard: body mass index < 18.5: lean 18.5 ≦ body mass index < 24: weight up to standard 24 ≦ body mass index < 27: overweight 27 ≦ body mass index < 30: mild obesity.
But I remind you again that the body mass index cannot be used as an absolute standard, because it cannot measure the composition of the body.
What is InBody?
Many large fitness clubs have a body composition analyzer called InBody, which can measure body fat rate, muscle mass, basal metabolic rate and so on, and analyze body composition in all directions.
InBody can be roughly divided into six parts, mainly looking at the following data:
First, body composition analysis
Weight weight SMM (skeletal muscle mass) Skeletal muscle weight: This is the "muscle" you see when you exercise! Body fat mass Body fat weight TBW (whole body moisture) Body moisture weight: It can be seen whether the body moisture content is enough! FFM (fat-free mass) Fat-free mass = weight-body fat weight or FFMI)=[ weight (kg) * (100%- body fat rate)]/(height (m) 2
Second, basal metabolic rate.
Basal metabolic rate: The calories consumed by the human body during sitting will gradually decrease with the increase of age. It can be calculated from the muscle mass that the higher the muscle mass, the higher the basal metabolic rate.
Third, obesity analysis
Body mass index = = weight (kg)/height square (m2)
The body fat rate of boys with normal PBF is lower than 25%, and that of girls is lower than 30%.
But if you want to have muscle lines, boys should be below 15% and girls should be below 20%!
Iv. visceral fat level
Visceral fat level: The higher visceral fat, the higher the risk of cardiovascular disease. People who usually have swimming rings in their lower abdomen may be very tall.
Five, body muscle, obesity distribution
You can see the muscle distribution on the left and right sides of the body, and there are usually more muscles on the habit side for exerting force.
Sixth, in vivo score.
The higher the muscle mass, the better, of course, the better for the human body. Of course, the lower the score, the easier it is to make progress.
What is the difference between body mass index and InBev?
Body mass index is mainly used to calculate the ratio of height to weight, and there is a standard interval for reference. Inbody's measurement results also include body mass index! It can measure the detailed composition and data of the body (of course, it is not the exact number of 100%, but it is more valuable than the body mass index). People often look at the ratio of muscle mass to fat, and then adjust diet or exercise training according to the right medicine.