Re: Highest Level Martial Arts and Aikido
I don't think it really matters if you learned movement informally as a child, or learned it formally through a previous martial art or other movement art, like dance. You still have to retrain for that particular art.
However movement with ki or kokyu is not just simple movement. It's the mind and body moving in unison.
I don't believe Koichi Tohei spent that much time with Nakamura Sensei. I don't have any documentation that K. Tohei spent time learning how to move from Nakamura Sensei. He mostly used Tempukai's concept of mind and body coordination to provide the framework for his concepts of Shin Shin Toitsu Aikido.