More than 92 percent of the children in the U.S. carry backpacks. Typically the backpacks are loaded with almost one-fourth of the child’s body weight (22 percent) and worn with only one strap. Last ...
SAN DIEGO, CA – More than 92 percent of the children in the U.S. carry backpacks. Typically the backpacks are loaded with almost one-fourth of the child’s body weight (22 percent) and worn with only ...
In some professions -- such as the military, firefighting and mountain rescue -- the load of a backpack may equal as much as 60 percent of adult body weight. A new study finds that even light loads ...
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