I pulsed Sustain Alpha during Tren-Test cycle about two months ago. I read that it would help, on the the Primordial Performance forum.
Because the Tren shut me down anyway, I can only assume that it helped.
No blood tests to confirm. Sorry, an assumption is all I have. Not very scientific.
I suggest asking Primordial Performance if they have any scientific data that they would be willing to share here.
Grega