Where I have found great use for APRE is for GPP (General Preparation Phase) work and Max Strength work with my High school population. I also will use APRE for GPP work with our college and professional clientele as well to help me gage where they are when they are coming back to us.
Now you could just use APRE and get great results with your athletes but our program we us has a few different methodologies mixed in which is why I use APRE for just those phases with those populations. APRE has three different protocols in 10, 6, and 3.