Christopher M. Norris 
Complete Guide to Abdominal Training [PDF ebook] 

The Complete Guide to Abdominal Training replaces Abdominal Training 2nd edition.Fully updated, in full colour, this book is packed with exercises and colour photographs to help coaches, fitness trainers and athletes improve their abdominal training programme.This is the abdominal training bible for all those in the fitness industry. Written by an experienced physiotherapist and best-selling author, it also covers the background physiology and theory.Includes sections on improving posture, and the science and clinical conditions of abdominal training.