I doubt anyone would consent to performing their stuff stuck full of EMG leads. Suckers hurt.....
there was an article on Kuroda sensei. it's in french. they hooked emg to Kuroda sensei upper body and measured his muscle activities during various cutting movements. they compared that to regular people muscle activities doing the same movements. Kuroda sensei muscle usage was completely different than normal folks. it was an interesting study.
i had a conversation with Ikeda sensei one time and he said he had never seen anyone move so fast like Kuroda sensei.