I read your blog when you first posted this and liked what you have to say, but didn't have a response. And now I do, I think.
I don't actually practice an eastern martial
art, but I practice the eastern movement
art of Yoga. And there are many similarities in these disciplines. One thing that you didn't mention in your blog that I *think?* is important in martial arts is the breath pattern of the practitioner. (maybe not all of them? Like I said, not my area of expertise.) I'm thinking of the "HA!" that accompanies karate chops (sorry, I know, it's stereotypical but I have a point I'm getting to). It's an audible version of a forceful exhale.
Control and awareness of breath is central to a yoga practice. Forceful exhales can focus the release of
energy. A chopping downward motion with a forceful exhale to support it is going to also be less of a strain to the body over the
course of a day. There's a whole lot of core power in the diaphragm muscle.
I find myself doing this unconsciously when I'm using a mattock and a shovel especially. Except, I usually exhale on the lifting part of the shoveling move.