This book is aimed at the persons studying sports science or for the exercise physiologist, this book has great illustrations, and covers most topics, such as; nutrition, energy systems and human performance. I have used this book in completion of my BSc and my MSc
However in some areas the book can be quite technical for the layperson, but also gives a bibliography at the end of each section. But, this is the best book for the money, If you are looking for something more indepth then this is NOT the book for you, this book gives good knowlegde in all areas but does not specialise in any aspect, those looking for infomation on health and exercise will also find this book informative as it has a whole chapter dedicated to health related fitness, drugs in sport e.t.c from the sports science aspect and professional bodies such as the ACSM
Coaches and Gym instructors can also help themselves by reading this book as it would give them, an insight into WHY peolpe do the type of training they do, from a solid science base.