We did both.
But,and I speak for the ARP part here,why is that needed when results are so evident immediately,and managing these outcomes towards a purpose (therapy or performance) is just a matter of knowing how to manage a training program in all his variables?
It would be like matching the the outcomes of the training components in Charlie’s System with bioimpedance.Or else.
Learn how to produce,understand,and manage responses first,and reverse engineer them later,and only if you really wish and need towards a next step.