There is a really really interesting paper out that talks about the pros and cons of the "single legged lineout lift". Which I guess TECHNICALLY means "single legged jumper support".
Basically, this research says, though hard to do, a jumper who is lifted/supported by his INSIDE leg, rather than by both legs or by the shorts, has more control in the air and is substantially more mobile. The jumper can use his non-jumping/supported leg as a fulcrum, and move all about in the air, significantly reducing the pressure on the individual lifters.
Additionally, the time that it takes the jumper to reach peak height is reduced. I don't see this become all the rage quite yet, but it's definitely very intriguing..
Here's some interesting photos:
If you check out the paper online, there are images and video of it being done in a match. What's nice is they have some images of it executed poorly (and explain why), and executed well.
My big fear is that I would try this, and because it hasn't been seen, it might be "assumed to be illegal".
Any thoughts on this curious lineout variation? Anyone doing this with their clubs?
Monday, December 11, 2006
One-Legged Lineout Lifting
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5 Comments:
WOW-- never really thought about single leg lifting. It looks like one of those things that on paper and the higher levels can be extremly effective, but I can see that going really bad if not done with precission. Just looking at the video, he higer you get, the longer the fall. I often freak out when I see over-zealous jumpers over extending themselves or other jumpers in lineouts (ex. lunging every which way, pulling on other jumpers in the air, etc.) I can only imagine this.
We dont use the one-legged jumper, but we have been known to do the one-person lineout. Basically our badass prop lifts the jumper solo.
its sweet and very effective on rare ocassions.
i'not sure about the legal part, but it looks like some rather dangerous stunt and i donÄt see any advantage in it.
I think this is one that is best left to the pros. There must be a significant practise time devoted to this to master the technique, and I don't think club sides will have the time. The movie example shows the jumper being dropped from a great height. If the technique gave you such an advantadge, I think that we would have seen the All Blacks use it. The 'latest' technique they are using at the moment seems to be the throw first then the jump.
for "increased mobility" read "decreased stability". The pjumper in the photos is not in the least bit secure and could come down very nastily with even a small bit of contact. A moving or live load is also much harder to control during and after the lift. Straight up, straight down, leave ballet to the backs.
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