Gerard Nijboer, Olympic Silver Medalist and European Champion Marathon Most interesting! Reading this book brought back memories of my first running book The Complete Book of Running. Just like James Fix's book it is a real page-turner, each and every page fascinates the committed runner with an eye for details! Hunter Allen, Legendary Coach and Co-developer of TrainingPeaks' ... Read moreWKO+ software When Dr. Coggan and I wrote, Training and Racing with a Power Meter, there were some very elite coaches that took this information and became experts around the world. The authors of this book are such experts. They used the laws of nature to describe and calculate the performance in running as well as in cycling. This book will help to take your running to the next level and the concepts written inside are foundations to creating success. Asker Jeukendrup, Sports Nutrition Scientist, Professor of Exercise Science One of the best books about endurance performance I have ever seen, with an evidence based analytical approach to performance in running. The many practical examples make it easy for the reader to understand and apply this to improve their own performance. The breakthrough of power meters is analyzed critically, including the possibilities to increase running economy and running performance. Maria Hopman, Professor of Integrative Physiology, Radboud University, Nijmegen I like the quantitative approach to the physics and physiology of running in this book. I feel this is important to understand and improve the performance in sports. I believe this book will help coaches and runners as theory and practice are combined in a highly understandable way. Show Less