For one, the TR Personal Record is just that, a record. There is no guidance or adjustment applied with any info provided or gleaned from it. The PR must be reviewed by the user, and if any action is to be taken, it requires some research and/or guidance to make any worthwhile decisions.
The 4DP is an adaptive program that takes the results from the test and adjust workouts each and every time, based on that info. I don’t know all the details, but it works to actively alter some or all of a given workout to target the “weak” areas found within a rider’s 4DP profile.
To that end, we have seen many hints that TR is headed in something of a similar direction. No specifics yet, but the data review and other comments about compliance and setting training are slight windows into what I expect to be a good (potentially great) solution that will push TR further into the lead of training offerings.
- Edit to add related info
- Improved Rider Capabilities Testing beyond FTP & Ramp test - #2 by Bryce