The intensive use of  power meters in cycling has led to the development of new models, new software and a lot associated terminology. The most appealing and widely used term is undoubtedly FTP or Functional Threshold Power. For the daily training practice, this term was a real relief but when it was equated with terms such as MaxLass, anaerobic threshold, 4 mmol limit and others, it leads to confusion and ambiguity, not least because FTP has no real physiological meaning. On top of that, training zones are calculated as fractions or multiples of this single reference power output. Therefore the physiological significance  of these training zones is far from clear.

Professor Emeritus Charles Dauwe developed a modern and extended version of the rather old Critical Power concept. In addition he formulated a novel model for the dynamics of anaerobic exhaustion and recovery with acronym EXREC. Through his enlightening approach, he had managed to transform a rather mathematical approach into a tool with both great physiological and practical significance.

"Typhoon" as he calls his brainchild is the result of years of analyzing hundreds of power files from both professional and amateur cyclists. 

As a trainer I have used Typhoon and EXREC for some time with success and because this application is a real game changer in the world of training practice and can have a major impact on the tactics to be applied in the race, Charles and I decided to explain this unique approach in a new e-book.

The future of training and racing with a power meter 

It can be ordered using the links above.