Incidentally, I'd like to recommend that people take a peek around outside cycling to understand a bit about training in general and, especially, about other sports' empirical approach to personalization/load management. Much of this applies to outdoors also (along a long enough time period so variation comes out in the wash) but can be directly applied to ERG training where external load is controllable just like rowing ERG and weight lifting. Volume, frequency, intensity, progression. It's not rocket science. It's all the same thing. It's not as complicated as the industrial complex needs you to think it is.
https://www.aworkoutroutine.com/
https://www.fitness.marines.mil/Port...-15-105509-990