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少年儿童在家及学校里有三分之一的时间是离不开桌椅的。正常而舒适的坐姿应当是:脊柱能保持正常的弯曲度(3～5cm);维持正确的体姿,使肌肉承受的负荷不大,腰背部肌肉呈放松状态,上体可充分休息,不妨碍内脏器官的功能;通向大腿的血管免受压迫,保持下肢血液循环通畅;上体与腿之间有适度夹角,足掌着地,并有一定活动空间;听课坐姿体压主要分布在肩背部及臀部的坐骨关节处。
One-third of children and young children at home and in school are inseparable from the tables and chairs. Normal and comfortable sitting position should be: the spine can maintain normal curvature (3 ~ 5cm); maintain the correct posture, the load on the muscle is not large, lower back muscle was relaxed, the upper body can rest, without prejudice The function of internal organs; blood vessels leading to the thigh from oppression, to maintain lower limb blood circulation; moderate angle between the upper body and legs, foot and the ground, and have some room for activity; lectures sitting posture pressure is mainly distributed in the shoulder and back And the buttocks of the ischial joints.