My lower back hurts after a hour of walking. I gain relief by sitting. I m 49, 5 8 160lbs, active only on weekends (i.e yeard work, trips to the store, etc...) I sit all day behind a computer and walk lees than a mile a week. I suspect my shoes, several years back using my Rockports helped. I perfer Van type skateboard shoes after work. Now any shoe or sandal doesn t help. Do the new MBT s, earth shoes or the the newest rocker type shoes help?