Wow, Iron's been quiet lately. Got a new job Iron?
Anyway, FSY, I doubt you'd find a scientific study or even anecdotal evidence on that one. Thing is, most internal guys aren't so interested in powerlifting. So the following is just MHO: no, I don't think so. A lot of research and expenditure goes into the best methods for lifting worldwide. If internal training did help, someone would've cottoned on and all the top lifters would be using it. But then again, how do you define internal training. Heavy lifts are helped by mindset, breathing, structure, etc. What is internal training by your definition? Just some thoughts.
"If trolling is an art then I am your yoda.if spelling counts, go elsewhere.........." - BL
"I don't do much cardio." - Ironfist
"Grip training is everything. I say this with CoC in hand." - abobo