This is sort of a piggyback on the previous thread re centripetal force, etc. But with video so as to discuss perhaps something in more specific and narrow terms, the last post was a bit robust to begin a practical discussion I realize.
The video depicts a few simple examples of such forces at play. Unfortunately the audio setting was F-ed up (I was filming a lesson for an out of state visitor), so you can't hear my diatribe the whole time while demonstrating, probably for the better.
The very basic idea is to of course push against the ground for momentum, turn the waist / body and swing the arms.
The resulting method / technique are essentially inconsequential at this point, but it should be fairly obvious what can come from it. The movements are exaggerated to start, and more disconnected. Here the student is a prior Wing C. guy, so I'm trying to get him to relax; he also wanted things beyond the scope of his skill level on tape since he is out of state.
More caveats; Yes I know I am not perfect. My posture is a bit off (just finished a J.D., have been hunched over a computer all day for months), plus I’m battling retrolystisis (spelling?) of L5, so my back is a bit off, but I'm still moving decently considering.
Anyway, the centripetal force begins from pushing from the ground and turning the toe/knee/waist closed, while opening the opposing side using centrifugal force (my right hand in clip), as the other hand uses centripetal. Another caveat; I do not have any degree or any official academic background in physics, neurophysiology, kinesiology, etc. (my background is Avionics / IT and Law), so hopefully someone who knows more about the exact process will chime in to assist if the question/need arises and / or I get something wrong e.g. Centripetal force.
The two man portion of the clip was my first attempt at showing that student how to "soft spar" sort of a hybrid between push hands and sparring, I’m sure many of you here do the same. The idea is to keep moving, right, wrong, bad form or not, just keep the motion. It's not a contest, everyone should take turns, give and take, and not everyone you meet will be trained in the arts. Random as@ attacks from many venues should be tried on each other, even if you have to break form / connection and structure. I love working with Boxers, MT, WC guys etc, who like to keep pressure on, how else will you get better? Here, I am trying to get the student to hit me and keep moving, he is reluctant, perhaps my previous demos weren’t so soft...
So, thoughts on the physics and actual principles behind these movements? Comparisons to your own methods or movement? Constructive criticism is of course welcome (even better if you have a clip replicating and demonstrating what I do / don't do correctly from your view-- but I can probably point out how I suck in this clip just about as well as anyone...we all have stuff to work on. http://www.flowingcombat.net/drill11.mov.3gp
Last edited by GaryR on Thu May 17, 2012 7:32 pm, edited 1 time in total.