Thanks for the feedback Lyle. I agree in everything you said. I was actually thinking to myself the differences between session-RPEs and training load for different training sessions (i.e. speed, weights, glycolitic conditioning) and how come the linear equation doesn’t get all the details, quality details. If you think more about it, real glycolisis conditioning will provide the greatest RPE (since this type of conditioning mess up with the homeostasis in greatest amount, compared to sprinting with is high quality and should be low RPE — thus my short article on the differences between exhaustion and effort). Even if the session-RPE is bigger compared to high quality sprints, does that means the former have bigger impact on recovery or latter? Can we even compare between modalities?
Anyway, both running (Daniels’ sheets for calculating training load) and cycling (Power meter community) are more easier to track compared to team sports, in which session RPEmay provide some insight into the training load, which is better to none. I guess session-RPE is oversimplification and we need to put more effort into research of subjective indicators.
Thanks for the input one more time.