p-Max (Ext) and Endurance Index (Ext) in GC

[Stefan Rothbauer]

Hi Marc,

could you point me to a paper / study / description of the Endurance Index? I. e. what is the importance / practical relevance  ot this metric regarding my training or performance?

How is it modelled in GC? What are the prerequisites for data so that endurance index estimates are meaningful?

p-Max (Ext): how is p-Max (Ext) determined in GC? What kind of tests do I need to do in order to supply the data required for dependable estimates? Is it based on Best 1 / 5 / 10 Second power or something different?

Best,

Stefan

[Ale Martinez]

https://groups.google.com/d/msg/golden-cheetah-users/K_dNjxS6rNQ/YGoniDch4UYJ

[Stefan Rothbauer]

Looks interesting. The discussion ended over 4 years ago. On google I do not find much for Endurance Index nor Endurance Parameter Ratio. The paper from which the concept is taken and referenced in the discussion was behind a pay wall :-(

To your knowledge, is the EI (or endurance parameter ratio) used and to what purpose from a practical point of view (certainly not widely, please correct if I am wrong)?

From a modeling side it seems a bit fragile and only valuable if your data contains enough maximal efforts to estimate CP and W' correctly. 

For estimating CP I understand that maximal efforts between 3 and 12 minutes (or 2 and 20) are crucial (taken frequently, e. g. every 4-6 weeks).

For W' exhaustive tests over which durations are recommended (certainly such that you are working above CP, so is 3 min maximal already enough or would adding tests of 1 min, 90 Sek, 2 min. add to more robust estimates)?