青少年正处于生长发育时期,由于他们的骨头胶质多,钙质少,骨头弹性好,可塑性强,所以比较容易弯曲。脊柱是人体的中轴,支撑着整个身体,如果脊柱结构产生变化,那么人的体型就会随着改变,变成脊柱侧弯或驼背等畸形。中、小学的学生每天要坐5—6个小时甚至更多的时间,如果坐姿及书写姿势不正确,加之走路和站立的时候不注意,就容易造成身体某一侧的肌肉收缩,另一侧 Adolescents are in the period of growth and development, because of their bones gum more, less calcium, good bone elasticity, plasticity, it is easier to bend. The spine is the body’s central axis, supporting the entire body, if the spine structure changes, then the body shape will change as the scoliosis or kyphosis and other deformities. Primary and secondary students to sit 5-6 hours a day or more, if sitting and writing position is not correct, combined with walking and standing time do not pay attention, it is easy to cause the body side of the muscle contraction, the other side