Frankly I had never heard the term until two weeks when I was lecturing at the English Institute of Sport. I am not sure if this is reverse periodization but here is a model of the way I do it and many people today who are producing results are doing it:
Get them Strong
Build Foundational and Basic Strength
Get them Fast
This is the application of the strength, more plyo’s and explosive work
Get them Fit
Use the strength and speed as a base to develop fitness that is appropriate for the sport or event
It is obviously a bit more complicated than this, but this is the substance of it.
The antiquated concept of building a huge aerobic base and then gradually getting more intense is very flawed. It worked in the days when competitions were few and concentrated in a “competition” phase.