Originally Posted by Peter Maxwell
I left the thread for someone with more expertise than me as I have little experience.
But noting no one answered here is my two cents worth.
Pendlay (I dont know if its his method) method = a pull to the hips, when the hips explode forward and there is a bit of a barbell swing outwards from the body as it goes up.
Catalyst method = triple extension - 2-3 pulls upwards keeping the bar close all the time before going under.
These are both the same thing, really!! They don't use different technique, but they teach the tech differently.