hello I have the Fenix 5 x 8 months . I do intense cycling 5 times a week 300 km and on 8 months the VO2 max is in the same has not changed.Is normal ?
Why with running the 5x needed only HR to send you a vo2 max and with cycle needed power meter.?I think because to sell Garmin power meter .
For running, speed and elevation gain give a pretty good idea of the effort level, which can be compared with HR to get fitness.
But for cycling, there are too many other variables (road surface, wind speed and direction, aeroness of equipment, etc) for speed alone to be an good proxy for effort.
To further debunk the Garmin conspiracy, Garmin offer Running Power through their RD pods/straps, but they don't require you to purchase this for running VO2Max - wrist OHRM is fine.
