Suggest a good running bio-mechanics book

You'll be better off looking for the biomechanics of sport. But there is a ton of info on the subject.

Peter Coe's Better Training For Distance Runners has some very good technical stuff about biomechanics.

POSE

There really isn't a whole lot out there on it, as far as I am aware. One reason is because there is no "perfect" running form, due to large individual variation in anatomy and neuromuscular control. From the laws of physics, there are certain aspects of running motion that are more mechanically efficient than others, but those "ideals" may not be the most metabolically efficient for all.

The other thing, is there are not really a whole lot of thresholds out there to say how much is too much or too little pronation, supination, etc. It is usually judged by somebody who has experience with runners.

If you "correct" one aspect of your running form, it may help you, or it may cause something else to change and cause a different problem.

"Explosive Running" by Michael Yessis is another great book that discusses the biomechanics of running.

http://www.amazon.com/Explosive-Running-Science-Kinesiology-Performance/dp/0809298996

You can get it for under $15.00 on Amazon. I bought it last year and really like it. Plenty of information and diagrams that go over stride length, efficiency, pronation, supination, etc...

It definitely has some good information in it, but I think the photos are a bit pixelated. Yessis talks a LOT about how it is more efficient to be a mid-foot striker than a forefoot striker. That is questionable itself, but the idea of actually converting can be dangerous if runners are not prepared with sufficient strength and flexibility first.

Personally speaking, between his book convincing one of this and some other coaches agreeing that it was worth a try, I went from an injury-free runner to somebody who has lost probably 4.5 of the past 6 years due to injury, all stemming from Achilles problems and changes in foot biomechanics. At the time, I just didn't know any better.

The other thing I didn't like about the book is it is almost like a catalog, where he is trying to sell more of his products.

Just my two cents.

Run barefoot and you won't have to worry about any of that stuff.

Beat me to the punch! Between this book and Coe & Martin, you're set--pictures mean a thousand words! Lore of Running also has an excellent section on causes of injuries related to biomechanics.

Agree-- don't make a conscious effort to change anything about how you run. You will obviously run differently depending on what's on (or not on) your feet, and that may be good or bad, but run as feels most natural/comfortable.