When I began studying Jikishinkage-ryu I learned exactly that; how to breath and how to walk. In the ryu it is called umpo- walking methods. You can see the late Mr. Terayama demonstrating it here at the 6:30 mark:
https://www.youtube.com/watch?v=4gwvSgFXuUY My training partner and I spent about 2 months only doing umpo for about 2-2.5 hours per class. It made us very sore but it also gave us a great foundation. We eventually learned suburi and then kata! lol