Wing Woo Gar
Senior Master
I'd be happy to hear more on the technique.
Perhaps I should have worded my statement more carefully. If you kick to the very limit of your flexibility then there will inherently be some level of pull on the standing leg, if not you are not kicking to your limit. You wouldn't want to do this in sparring etc. but in kicking drills such as zheng ti tui, where one of the aims is working on active flexibility this might happen. It's not a lack of control, it's a deliberate act.
From a physics perspective, the reason things do not move is because of friction. Think of a rock in space, it keeps moving because friction is less than any force exerted by gravity. Or a puck on an air hockey table, it keeps a lot of its momentum due to a lack of friction. On the ground an object doesn't move because gravity is pulling it into a surface to create friction. The more mass the object has, and the rougher its surface and the surface it rests on, the more friction created by the pull of gravity. Any movement must come from a force strong enough to overcome that friction.
So, if you kick to a point where you have reached the limit of your flexibility, with sufficient power, there will be pull on the standing leg, that is anatomically unavoidable. If the force of that pull is stronger than the friction holding your foot in place, your foot will move.
Now all of that is not to say that you can't use techniques to increase the level of friction between your foot and the floor. I'd be interested in what you have to say on rooting techniques to develop this.
It’s what I know. You could fall down just walking across Sifu Woo’s floor. Now if you can punch and kick and root on that floor you are really doing something. Then when you take that same skill and put rubber soled shoes on asphalt, watch out! We train under the worst condition so that normal conditions are easy.ha ha ha.. my first school had slippery floors. There was never any grip no matter what type of shoes one would wear. I think it's safer and better for the body. Now that the gym that I go to has their mats down. My son and I can no longer slide our feet on the ground, so now we have to do a lot of stepping so that we don't twist on the knee, where normally we could use the floor to help absorb the technique so that our knees wouldn't