Again, those injuries almost always happen in competition NOT because someone is throwing the technique on harder, but because there is more incentive to attempt to slip the technique, rather than fight through it, resulting in folks refusing to tap in techniques that they would tap to when sparring.
The techniques ARE attempted at full power against a resisting opponent, exactly as I have said, who is attempting to do the same thing. But the difference in sparring is that there is little incentive to risk injury to avoid being submitted, so we tap soon enough to avoid injury.
quote]
That's just not true. People go into the control position for submissions quickly, but then they pretty much stop increasing force, and apply it much more slowly to not injure people (at least, most people do). When you go into pretty much any joint lock full speed, you can dislocate the joint or break it before the other person even feels the tension in the joint. Believe me, I've been on the receiving end of a rookie during an armbar drill who popped his hips into the juji-gatame instead of locking it in and applying pressure slowly. He just popped my elbow out of socket beforeI even felt tension on it. This was after I'd been grappling for about 4 years, I knew when to tap and when I was stuck, it was the only injury I've ever gotten in grappling btw.
Look at a few of Ken Shamrocks pancrase matches, he normally locked in a submission hold, then applied torque to it slowly to not injure his opponents. Then watch his Leon Djik fight (djik had said some disparaging comments about shamrock). He got a heel hook and wrenched it as hard and fast as he could, snapping Djik's leg before he even had time to scream, much less tap.
A King of the cage match a few years ago had a nasty heel hook in it as well. A blue haired BJJ student slapped on a heel hook standing, fell back and broke the leg on the way down. His opponent had no time to tap.
These are two examples of someone refusing to tap and getting their arm broken because of it (most common method of injury)
Here is the vid of shamrock snapping Dijk's leg - notice that he wrenched it as hard as he could as soon as it was under his arm
Here is the video of Kazushi Sakuraba breaking Renzo Gracies arm - note that it broke on the way down, giving Renzo no chance to tap- the arm break occurs around 4:09
Here is Rhadi Ferguson breaking an arm in judo, he locks on the sub and breaks it as the guy taps immediately from the armbar. occurs at the very end of the video
Someone in a dojo snapping a guys arm with a lock, occurs at 1:16 the guy wrenches the kimura around until it snaps, not giving the other guy any chance to tap.
http://www.youtube.com/watch?v=r8NblJ8d3wk&feature=related
A grappling tourny with a standing kimura arm break at 4:05, no time to tap either