Amputee Is German Long Jump Champion 175
hweimer (709734) writes "German long jumper Markus Rehm has written sports history yesterday, becoming the first disabled athlete to win a national able-bodied championship. His jump to 8.24 meters put him on the 9th place of the current season rankings and make him egligible to compete in the upcoming European championships, further sparking the debate whether his prosthetic leg provides him with an unfair advantage."
Re:No, no unfair advantage at all... (Score:4, Informative)
you're not allowed for example to have shoes that have a sole thicker than a certain amount.
I just looked it up and apparently it's the same for long jump shoes.
So yes, I don't think springs or a blade qualify as valid shoes in this case (especially if the blade is 18 inches longer than your other leg!).
Re:Nudity (Score:5, Informative)
If there's a distinct non-human advantage to them, yes. Most sports are extremely tightly regulated, mainly I've looked at the Nordic sports and for example the jump suit used in ski jumping is highly regulated. Likewise in ice skating, they proved some years ago a "Donald Duck" like suit would improve skate times. It was banned. The support biathlon athletes can get while shooting is likewise regulated. The rules themselves are arbitrary, as long as they're equal for everyone. Why it is "three strikes, you're out" in baseball? Couldn't it be one strike? Five strikes? Sure it could, but the game says three. And then you compete under the rules of the game. Everything else is the other way around, they're allowed to wear baseball caps because everyone can wear one and it doesn't favor anyone in particular. You can't call ut unaided because bicyclists obviously outpace runners, pole vaulters outjump high jumpers and so on but the aid is considered neutral. Anything that isn't you ban.
He takes off using the prosthetic leg... (Score:5, Informative)
If you watch the jump carefully you'll notice that he takes off (launches) from the prosthetic leg. I wouldn't be complaining too much if he took off from his real leg.
Look at the kangaroo, a kangaroo has a very long Achilles tendon. This allows them to be very efficient in jumping buy storing up so much energy when it stretches out like a rubber band enabling them to jump very far with very little effort. Humans on the other hand, have very short achilles tendons and therefore do not have this mechanical advantage.
When landing, the impact force and weight of the this guy is absorbed by active elastic stretch of the prosthetic. When he jumps, the weight is accelerated by a recoil force due to elastic recoil of the the prosthetic. This recoil force is much greater than that of what our our achilles tendon plus the active contraction of our calf muscle can do.
This guy has the equivilant of a 15inch long achilles tendon. As if you look at the video when he actually makes the jump, you'll see the prosthetic "foot" is bent 90 degrees from it's normal angle. The human achilles tendon is a) not 15in long and b) doesn't bend 90 degrees.
As a side note, I would assume there is no "fatigue" or decrease in "springiness" of the prosthetic between his first, second and third jumps. He could always show up to an event with a brand new prosthetic.
He's cheating.