Lately I've been trying to improve my running form by following the diagram. *Running* has gotten better, but now I get a low backache afterwards. I suspect it's the shoes.
I went to a new triathlon/running store, and talked to a nice young man. Tried on a few pairs, ran, he critiqued me and gave me MORE pointers, and I picked up Newton running shoes. They're shaped differently, like the part under the ball of foot is elevated, so my toes point up higher than in my Brooks.
I went for my first run in the Newtons today. The first mile was nice, very comfey. The second mile started to hurt. I quit around 1.9 miles with a painful right arch. I biked afterwards to continue my workout without the impact of the running.