In reply to Rock to Fakey:
Yes they are the same thing AFAIK. To quote Dave Mcleod (
https://www.scottishclimbs.com/wiki/Climbing_Research_-_Making_more_questio...
"The goal is to increase the density of capillaries (micro blood vessels) in the muscle to maximise the amount of blood coming back in while you reach between holds, clip or shake out. The type of training which produces this adaptation is low intensity, high volume work."
However, as with most things in climbing training there are no strict definitions really, the terms are all just what people different people use currently (ie aeropow, ancap etc). I bet different people do this kind of training at slightly different intensities, maybe some people call one SACC and the other ARC, I don't know. (Some people will say NO pump, others will say up to maybe 3-4/10 is OK). Certainly I've been told by a coach to do AeroCap training distinct from ARC training (where I consider the former to be an umbrella term, or spectrum on which ARC sits).