you can't judge TKD's effectiveness from a few ring fights shown on the net, or from the Olympic-style competitions.
Even without evidence of specific SD training, the sparring footage at least shows that well-trained TKD practitioners can move, can take a hit without panicking, are much more physically fit than most people, and have at least some concept of guarding vital areas and avoiding getting hit.
Granted, what they've trained in for TKD sparring is
far less optimized for SD than it is for the ring (and almost surely even encourages some habits that would be very bad in SD). But that by no means makes their training useless to them in a personal defense situation.
Just being in shape is a major advantage that practicing TKDists have over most potential victims of physical violence. Of course, that's not limited to just martial arts. . .I imagine that swimmers, skaters, rugby players, etc. would fare pretty well, too. However, I think that much of the hand-eye coordination and reflexes that a TKDist develops from experience in the ring would also serve to their advantage in an assault.
And before someone responds with "Sparring can't possibly approach the kind of stress one experiences when they are attacked by surprise or their life is in danger.", let me just say "Yeah, no kidding!". Someone who wants or needs dedicated SD should be looking at dedicated SD programs.
I do appreciate the topic of this thread and have often wondered just how practical any parts of TKD training are for SD. I don't mean as opposed to other martial arts or defense training; I mean just plain, in and of itself, does what we learn have a history of being applied practically?
But then, what do I mean by "practical"? A self-defense technique that is so non-intuitive, awkward, and complicated that a student can't remember it readily and has to re-teach it to themselves before each testing is not gonna be a practical SD move for that student. They have to be automatic. (Am I wrong on this?)
What I've seen with many TKD curricula is that they include quite a few potentially effective SD techniques in their requirements, but they don't place much emphasis on keeping them honed continuously. Without constant rehearsal (such as one might encounter in a dedicated SD class), difficult SD techniques should not be considered practical.
If, instead, the student will be just relying on occasional reviews to keep their SD fresh, they're better off with the simpler techniques, even though they may be fundamentally less effective. I can go years without riding a bike at very little cost to my overall bike riding skill. But every summer, I find I have to re-familiarize myself with the controls of our tractor. If I had to escape from an assailant, the bike would be a more practical route than the tractor. However, Grandmaster Farmer O'Dell, who trains in Crop Kwon Do daily, could hop on the tractor in an instant and put himself several kilometers away without breaking a sweat.
Dan