I just got the book and read it over a few times thoroughly, Leo Costa 's routines does go with the high volume, high frequency, but that is just part of the program. You are suppose to load up to higher stress levels, hyperadapt he calls it, which is practically a loading phase to stress the body to a point that has never been stressed before. Then you deload , by lowering volume, increasing rest periods and backing off on frequency a bit . This is called the supergrowth phase, and basically the body is now at a higher adaptive energy state, so with the work done during the deloading/supergrowth phase, the body would have to catch up to the stimulus and supercompensate before backing down to a sub optimal training zone, then repeating again on your next loading phase. Each loading and deloading phase lasts three weeks. Basically you are putting the lag time effect(similar to carb loading ) to use while organizing the workouts in a periodized fashion.
So the deloading is really the key to the growth, his program is not just about high volume and increasing frequency like most of you think it is. He also gives charts and diagrams on why this works. But i haven't tried the routines yet but will soon do them. I do feel, unfortunately, that the 6 day a week, twice a day program is overkill for natural lifters. But the other 4 day a week and 6 days a week, one a day programs are all doable .
