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呱呱坠地的足月新生儿身高一般50厘米左右,出生后第一年约增高25厘米,第二年增高10厘米,此后每年约长高4至5厘米。儿童的第一增高期多数从5岁开始。最大可到12岁,此时期儿童身长增高超过体重增加的速度。小儿身长增高是儿童骨骼发育与营养状态的标志。新近日本学者研究发现男孩身高急剧长高的转折年龄是11岁,女孩子为8岁;直至男孩在17岁、女孩在15岁达到生长顶峰后,其长高的速度就会急骤下降。有关学者认为在长高的转折年龄至生长顶峰之间阶段,是决定孩子高矮的关键时期。人的高矮与先天遗传因素息息相关,但还与后天因素饮食、运动及生活方式等密切有关。孩子个子的高矮主要决定于人椎骨
The height of a full-term newborn baby who is born in a fall is about 50 centimeters in height, about 25 centimeters higher in the first year after birth, and 10 centimeters higher in the second year, and is about 4 to 5 centimeters taller each year thereafter. Most of the children’s first increase period begins at the age of 5. It can be up to 12 years old. During this period, the child’s height grows faster than the weight gain. Increased child length is a sign of skeletal development and nutritional status in children. Recent studies by Japanese scholars have found that the turning age of a boy is 11 years old and the girl is 8 years old. After the boy reaches 17 years of age and the girl reaches the peak of the growth rate at 15 years, the height of the boy’s height will drop rapidly. Relevant scholars believe that the period between the high turning age and the peak of growth is a crucial period for determining the height of the child. Human height is closely related to congenital genetic factors, but it is also closely related to acquired factors such as diet, exercise and lifestyle. The height of the child depends mainly on the human vertebrae