Re: Aikido, Cross-training, Aiki and the Arts
True - Minoru Akuzawa is based out of Japan and has whole set of exercises for training the body independent of the waza.
Going back further, Tohei has a whole system for it in the Ki Society, complete with a separate ranking structure.
Of course there are a number of Daito-ryu and Aikido instructors who have had solo training regimens for building the Budo body seperate from waza, and that goes back quite a long time, although it wasn't always public.
Sagawa talks a little about it in this article
And don't forget all of the post war deshi tramping over to Tempu Nakamura's Tempukai.