Around ten years ago I read a paper which was written in the 1980s or maybe early 90s (I think either from folks at http://www.natick.army.mil/, UPenn, or maybe it was research out of ETHZ?) which discussed how as backpack weight increased it impacted agility and fatigue. My memory is that for the subjects tested when the backpack load reached ~10% of their lean body weight their balance-time degrade significantly as did overall fatigue. Can anyone give me a pointer to this study, or more recent work in the area. There are some papers whose abstract look interesting. For example:
I can't really get excited about shelling out $$ (especially since my tax dollars paid for a number of these studies) and haven't gotten around to a good research library to find the original journal article. Anyone tracked down interesting research related to bio-mechanics, motion, backpacks, etc? What articles are intersting and what have you learned?