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按照年龄特征的划分,十一、二岁至十四、五岁是学龄中期,也叫少年时期,是青春发育期中发育最迅猛的阶段。虽然每个孩子具体情况不同,发育的速度和状况有一定差异,但他们差不多都要遇到各种短暂的困难,其中,走路不稳比较直观和常见。身高和体重是少年生长发育的重要的形态指标,都是随着年龄的增长而逐渐增长的,根据青春发育期生长发育的规律,身体各系统的发育是不平衡的。例如身高和坐高的增长速度就不一致,这是因为身高正处于突增阶段,上下肢的增长比脊柱的增长要快,因
In accordance with the division of age characteristics, eleven, two to fourteen, five-year-old is the middle school-age, also known as the juvenile period, is the most rapid development stage of puberty. Although each child’s specific situation is different, the speed and condition of development are different, but almost all of them have to encounter a variety of short-term difficulties, of which walking instability is more intuitive and common. Height and weight are important morphological indicators of juvenile growth and development, are increasing with age and gradually grow, according to the law of growth and development during puberty, the development of the body system is not balanced. For example, the height and height of the growth rate of growth is inconsistent, it is because the height is in a stage of rapid growth, upper and lower extremity growth faster than the spine due to