what carrying a backpack does to you; or reason #76312 why I'm thankful for the Internet

[gusl]

Stefano Negrini and Alberto Negrini - Postural effects of symmetrical and asymmetrical loads on the spines of schoolchildren

A Kinematic Analysis of Back Pack Load on a Female College Student

Now it's about the women and the children! Why have I never heard complaints about this?

If you've ever seen me carrying a backpack in the "pregnant" position, now you know why.

Comments

[gustavolacerda.livejournal.com]

30lbs is a lot of weight if you carry it a lot, walk with it, etc. This is especially true for people with weak backs. If you weigh 100lbs, 30lbs is 30% of your weight!