I have given up on running articles and magazines.  I out my shoes on and run.  If I want to run faster, I start doing time trials on a fixed course, trying to do it faster than the last time.  I do a mix of hills, flats and treadmill running.  It's not really that scientific.  If there is something groundbreaking that I need to know about, one of my running geek friends will clue me in.  Otherwise, every running magazine is just a collection of articles that have been recirculated year after year.