1- 12 year old boy:
1- 12 year old girl:
There are physiological differences between boys and girls, so boys will grow faster than girls. Generally, boys should reach 135.4cm when they are 9 years old, and it is better to keep their weight around 30.46kg However, the standard height of girls of the same age is 134. 1cm and their weight is 28. 19kg, which is also different.
Ways to help children grow taller:
1. Moderate exercise
Children must pay attention to exercise when they grow up. Parents should not always let their children learn, but also give them time to play and exercise. Proper exercise can promote the development of children's bones and muscles and make children grow taller!
Get enough sleep
The younger you are, the more time you need to sleep, and the older you are, the shorter the time you need to sleep, because the child is in the development stage. Generally, from 10 to 2 am, the child's growth hormone secretion is the most vigorous, and the child gets enough sleep, which is more conducive to his development and growth. So parents should urge their children to go to bed on time before ten o'clock!
3. Not picky about food
Children may be picky eaters when they are young, but they don't like to eat something good for their health. At this time, parents should urge and guide their children more, and don't let them develop the habit of picky eaters. They should have a balanced diet and supplement some trace elements rich in protein, calcium, iron and zinc, which are helpful for children's growth. During this period, children may prefer to eat snacks, so mothers must control the amount their children eat, or they will get fat.
Extended data:
Standard weight calculation method
Adult body mass index method
Body mass index = weight (kg) divided by height (m) squared kg/m2.
Normal weight: body mass index = 18-25.
Overweight: body mass index = 25-30.
Mild obesity: body mass index >; 30
Moderate obesity: body mass index >; 35
Severe obesity: body mass index >; 40
Standard weight of children
Standard weight = age x 2+8 (3-7 years old)
Standard weight = age x 3+ 10(7- 16 years old)
Mild obesity: 20%-30% overweight.
Moderate obesity: 40%-50% overweight.
Severe obesity: more than 50% of standard weight.
Normal overweight, mild obesity, moderate obesity and severe obesity.
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Several other calculation methods
① Adult: (height (cm)- 100)×0.9= standard weight (kg)
② Male: Height (cm)- 105= standard weight (kg)
Female: Height (cm)- 100= standard weight (kg)
The above two calculation methods have basically been widely used.
In addition, the Academy of Military Sciences also introduced a method to calculate the ideal weight of China people:
The ideal weight of northerners = (height cm- 150)×0.6+50(kg)
The ideal weight of southerners = (height cm- 150)×0.6+48(kg)
This calculation method seems to be more suitable for China people in northern and southern areas.
A simple way to calculate the standard weight of children is:
1 ~ 6 months: birth weight (kg)+month age ×0.6= standard weight (kg)
7 ~ 12 months: birth weight (kg)+month age ×0.5= standard weight (kg)
1 year or older: 8+ age× 2 = standard weight (kg)
Reference: Baidu Encyclopedia-Weight