When the actual weight exceeds 10% ~ 20% of the standard weight (kg), it is overweight, 20% above the standard weight (kg) is obese, 20% below the standard weight (kg) is emaciation, and 20% below the standard weight (kg) is severe emaciation. According to the calculation formula of body mass index (BMI), BMI = weight (kg)/ height (m 2), height 160cm, and the body mass index of girls weighing 90 kg is about 17.6, which belongs to the light range.
Body mass index (BMI) is a commonly used index to judge healthy weight. The standard body mass index of healthy adults in China is 18.5~23.9, the body mass index < 18.5 is underweight, 24~28 is overweight, and the body mass index ≥28 is obese.
A girl with a height of 160cm and a weight of 90 kg, with a body mass index of about 17.6, is thin. In addition, according to the standard weight evaluation, the standard weight (kg) = height (cm)- 105, that is, 160- 105 = 55kg, and 55kg is 1 10 kg, that is, 90 kg and 90kg.
The relationship between weight and height:
First, it can be expressed by the relationship between height and weight. The simplest calculation method is that the kilogram of standard weight is equal to the centimeter of height minus 105. For example, for a man whose height is 170cm, the standard weight should be 170- 105 = 65 kg. It should be noted that. This method is only suitable for adults, not for children, the elderly or people who are too short.
Second, Blocker formula, if the height is below 165cm, the standard weight, kg, etc. , the height in centimeters minus105; If the height is above 165cm, the standard weight is equal to the cm of the height minus 100.
3. According to China people's formula for dividing north and south areas, the ideal weight and kilograms of northerners are equal to the centimeters of height minus 150, multiplied by 0.6 plus 50; The ideal weight and kilogram of southerners is equal to the centimeter of height minus 150, multiplied by 0.6 plus 48.