Good advertising causes something to click in the minds of the people viewing it. They immediately relate- they see the person in the ad as themselves. So the question is, would the person you're targeting relate to the guy deivering the kick or the guy receiving it?
There's nothing wrong with advertising that doesn't appeal to everyone. In fact, sometimes it's better. There is no universally-appealing product. In fact, one of the most popular products of all time was almost never manufactured. In focus group testing, a solid half of the participants rated it dismally low. They hated it. But in the other half, they liked it very well and a third absolutely loved it. If your product can be loved by a third of the population, you're on to something. The product was the Ford Taurus.
Back to your topic- I think the majority of people that have yet to achieve a proficient skill level in fighting would see themselves as a recipient. And that even those interested in the sport would have to assume they would in the same position as the unconscious guy on their way to proficiency. The ad would likely appeal to a very thin sliver of your audience. My guess is you want to introduce your services to a broader base.