Power Factor Training.......I've used this system with some very good results for the purpose it was intended for. My purpose at the time was for sports.. . Even have the book ...somewhere. (actually a very badly edited and set up little book, but that's another story) Of course it's specialized training protocol not meant for the average BB'er.
It's designed for movements from 4 to 6 inches, working the strongest positions of the push and the pull. An example of the push (moving an object away from the body) would be lockout benches. For the pull (moving an object towards the body) would be starting pullup's from a full stretch arm position. Also included are DL's, BB Hacks and squats (in whatever variety)
It's not a full range complete system and not designed so. It would be a a more rounded system if full range exercise were also included. Than your full bench could more or less improve a bit also . Some lifters will do heavier 4-5 inch lockouts after a serious bench workout anyway, though not every workout..
I and other players have use this before and during football season. I played defense lineman in college, where inner line play depends on pushing and pulling short range arm and shoulder strength under great resistance. Including leg and calf leverage. The Power Factor training helped me in those cases.
I wouldn't call it a scam, bogus or whatever. It does work for the increase of short range strength and very well. Muscle mass has also been noted in some cases. Like everything else in training, got to try it yourself and make up your own mind. Power Factor training does not influence the other two phases of a muscle contraction to any impressive degree. It can't be called a complete workout system. But you will be handling a massive amount of weight for a very short ROM, if that pleases you.
Good Luck.
