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Originally Posted by jfelco
its an old vest, but does have a waist strap. even with that tight, it still feels like the weight sits on my traps. i only use the vest when im on the stair climber, because the candidate physical agility tests uses a simulated weight as well during the testing. i do keep a good posture when im on the stair climber, and the first thing to fatigue is usually my lower back.
ill consult with my physician.
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Your lower back fatigue may not be related entirely to the backpack. That's where fatigue can begin in general. I used to have that problem when I first started riding road bikes a longer dustance. It improved as I got in better shape and also worked more on my core strength. Your problem may be a sign of a need to work on your core more with crunches, back extensions, etc.