Question: doesn't Zwift have a built in test to measure FTP.
Yes
How does this stack up regarding accuracy with the other methods mentioned on the forum?
There is not much in accuracy to mess up from a computation method. But physically the testsare just really hard to do and it takes practice to get good at pacing the tests with out blowing up.
It's pretty straight forward math, with 3 formulas:
The 2 tests used by all the training programs are as follows:
1) Ride Qty-2 x 8 minutes segments full gas; take the "average" of the "average watts" of the two segments and multiply by 80% = FTP
2) Ride Qty 1 x 20 minute segment full gas; take that average wattage and multiply by 90% = FTP
The 80% and 90% values are based on the rate at which people "fade" over an hour on an all out effort; after studying 1000s of athletes. Once you have FTP you can scale workouts relative to the strength of the athlete. That means that a workout called "Super Donut Run" will be equally challenging to riders of vastly different size, strengths, and training levels.
3) The third formula is the new mFTP which has not been publicly released. It's for coaches using WKO4 and athletes using training peaks. It "Appears" to be calculated from the last 90 days of real riding; and it's is surprisingly accurate IF you are regularly training and initially started from an FTP test. Beauty of this one is that someone who is actively training doesn't have stop training to test (FTP tests are best done on two days rest, and are ride to you puke efforts, often then messing up training for the follow day or two) mFTP removes that hurdle
Second, doesn't Zwift have its own internal training programs built in that mirror other FTP trainng programs out in trainer land?
Yes but their library is not a mature or developed yet. They are very exclusionary in their betas so they have been lagging in mainstream input for the community at large.
Does anyone know how these compare?
The big 3 are: Trainer Road, Zwift, and CyclopesVirtualTraining
- All have built in workout editors
- Zwift has gameification
- TR has the largest workout library and full training plans
- CVT has video rides
- Zwift seems to focus on making time on the trainer less boring
- TR focuses on making the time on the trainer more productive
- CVT splits the difference.
Couldn't one simply use them and not the chase the icon racers that are so popular?
- It's the same challenge on the real rode; if you don't chase people outdoors then you probably won't indoors either.
Basically you have to try and see which one will motivate you to ride...