I'm after some input for the physiology nerds on here - I'm curious that none of the power-duration models with good fit have separate terms for VO2 max (ie cardiovacular fitness) and anaerobic energy systems, but rather one term (W', FRC etc) that represents both. Is this a consquence of parsimonious modeling, or is it also representative of the underlying physiology?
Common training approaches seem to suggest doing different types of intervals to target anaerobic capacity and VO2 max, but if performance at durations over FTP and under Pmax are well modelled by a single parameter then this would suggest that the underlying physiological limiter is the same and there is no need (beyond trying to do somehting specific to the desired race) to try to train the VO2 max and anaerobic 'systems' with different approaches?
Common training approaches seem to suggest doing different types of intervals to target anaerobic capacity and VO2 max, but if performance at durations over FTP and under Pmax are well modelled by a single parameter then this would suggest that the underlying physiological limiter is the same and there is no need (beyond trying to do somehting specific to the desired race) to try to train the VO2 max and anaerobic 'systems' with different approaches?