'Burden' when children wear backpacks

Images of elementary and middle school boys carrying shoulder bags of oversized books are no longer rare. Regularly wearing backpacks with overloaded weight will cause children to have back pain, neck pain and, in the long run, may cause the spine to bend.

Big pair, where are you?

Recently this has been confirmed again in the research work of scientists in the University of California, USA.

Scientists gave 10 13-year-old boys, including 5 boys and 5 girls, the same type of backpack with pressure sensors attached to 2 straps. The weight of the backpack is gradually increased corresponding to 10%, 20% and 30% of the body weight of the children. The pressure on the two straps is carefully measured each time the weight is increased accordingly.

The results surprised the scientists: even when two straps were used simultaneously, the pressure from the two strings on the child's shoulders was not fixed or balanced as many people thought earlier.

Moreover, even if the weight of the backpack is only 10% of the body weight, it is still determined to be heavy for the child and if the weight is too heavy, the two straps will make the blood unable to circulate. affected muscles and skin.

Here are 3 tips that may be useful by the scientists who carried out this study:

- First: Backpack should be worn high. Wearing this will reduce the pressure on your shoulders and back.

- Second: Should wear a backpack with a big belt and when worn, wear it equally with both shoulders.

- Third: Try to minimize the school supplies in your backpack to reduce weight when worn.