But even if you do buy the perfect backpack, your child still has to wear it correctly and not put too much inside. Wilmarth looked at changes in children's postures when wearing backpacks and found that when a bag weighs more than 15 percent of the child's own weight, they are more likely to lean forward excessively to compensate for the weight. A too heavy pack can also strain the muscles and soft tissues in the neck, shoulders and back, leaving them more vulnerable to injury.
"Back pain is already the most common ailment among working American adults. If we don't correct the backpack issues that are causing children back pain, the issue will become magnified in years to come," Wilmarth said.
So, check that your child is wearing the bag properly. Make sure he or she is:
- Wearing both straps. This ensures that the weight in the bag is distributed evenly over the back. Using only one strap can cause the body to lean. Even bags with one strap that crosses the body can put too much strain on one shoulder.
- Removing the bag carefully. Your child should keep his torso stable and not twist too much when taking off or putting on the bag.
- Wearing the bag over the mid back. This is where the strongest back muscles are located. Make sure that the straps of the bag are tight enough to allow the bag to lie flat on the back, but still allow the child to freely move his or her arms.
- Carrying only what is needed. Make sure the bag weighs less than 15 percent of your child's bodyweight. Take out anything that can be left at home, and make sure the heaviest items in the bag are closest to the back.