Regarding the database, the theoretical part is very interesting for all beginners in mechanical bio racing. Perfectly described, simple in form paper edition brings further advantages Editions T SOUCCAR (durability, readability, ideal format): definitely a part I relirais in excellent conditions.
The practical part is perfectible by me since changing his stride is not an easy process. I often think of the theoretical part and when I run sometimes I have good feeling and a real pleasure to perform the right action. More often it is difficult and after several months of various experiments I did not appropriate any automation. As the book points out but every runner is different and therefore each course to the FAA also with more or less ease.
Anyway I persevere because that's where our Achilles tendon and that the game is worth the candle and the transition tries you, go for it but be aware that this can - be long and difficult.
Cordially