i can continue only here, because previous post was closed immediately. (UPD: not closed, just if i use colored fonts in the reply, the forum's motor refuse to post with error message... and i cant delete this post already...)
the standard for the FTP says: the power what the rider can hold for one hour (ok there are new methods where this duration already less, 30-40mins, but it is not relevant now). so any standard is above any estimation, it is a fact.
yes, i know that i need to input manually my FTP (i just have tons of time now and i test the unit capabilities...), i train and coach myself with power massively since 13years, so i know my actual and exact FTP with closed eyes (but an older example: when i rode 2hs at 300W and my real FTP was 340W, the Edge gave me 294W FTP constantly with +-1w difference :) , but never gave me valid (and other platforms gave)... and it was after 1.5y heavy use of 840 with all-type of short or longer maximum efforts... so the device had tons of data from power and from accurate R-R HR data also, what does it need more???) but the rest of the users are not so expert, they are believing in the Garmin device and its metrics and suggestions... and how many such users do you think there are?
i just wanted to show that the FTP estimation is not good, the rider wont go all-outs or extra strong efforts everyday or very often (if it helps for the estimation, but as i wrote above , it didnt...), and if the estimation is so low, his/her trainings will be underperformed for weeks for sure (or maybe forever), from a base 2h-3h trainings the device wont give you new (and more accurate) FTP estimation, and usually a training plan has 80-90% base rides and only the rest is stronger (if stronger)
so the estimation is a good thing, in the cases of maxHR and VO2Max or ThresholdHR i can accept that the device needs more than 1 good (or bad) day to increase (or decrease) a bit of the value of these metrics (because the device cant validate these estimation from other datas, you dont have a portable device on your back like Cosmed K5 or similar to measure a real VO2Max onthefly :) ), but if the device measures itself an accurate best 1h (and 20min) avgpower from power meter which is exceed the estimation then the device must use that value. its like if the user is going to the lab, the expert coach is telling him/her, "lets hop on the bike and test you", the rider is doing a 300W 1h on the bike, and after the test the lab expert tells , ok then your FTP is 250W from my estimation and we will train by this data for weeks and the user wont improve because he/she will undertrain...
but any other training platforms give you much better and more accurate estimations from this Garmin data, so if others can do it , i bet you can do it or at least improve it with the facts what i wrote :)
