1. Affect the development of the spine or cause scoliosis
The study found that if the student has osteoporosis, once the weight of the bag exceeds 10% of the weight, the spine will be overstressed, and the imbalance of the shoulder strap may affect the spine development or spine formation of the students, especially the primary school students. The phenomenon of side bends.
Recently, the incidence of cervical spondylosis has gradually increased in adolescents. The main cause of the disease is the long-term burden of school-age children, the incorrect sitting posture and the excessive weight of the bag cause greater pressure on the cervical spine. Long-term burdens on overweight bags can lead to early changes in the neck, chest and lumbar spine of primary and secondary school students.
Because the bag is too heavy, the child will lean forward in order to balance the center of gravity. It is possible to form a hunchback by maintaining this posture for a long time.
4.causing children's tired of learning
Excessive weight of the bag not only affects the children's physical health, but also causes the children's tired of schooling, the bag is too heavy, the children do not like to carry the bag, plus the usual heavy learning pressure, will greatly increase the child's spirit Stress, carrying a heavy mental burden, and then causing children's tired of school.