Facts, Not Fiction

 
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    #11
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    Quote Originally Posted by Trickstat View Post
    The difference is that dragging your leg in TJ was often considered to be a hindrance because of lost momentum while HJing two footed would lead to greater heights.

    If it ever did come in they should ensure that it is against the rules to do any kind of somersault before the take-off for safety reasons. Gymnasts and acrobats often get their greatest elevation at the end of a series of somersaults.
    Is it really the case that jumping off of two feet produces more elevation than one foot take offs?.. I can imagine that for some athletes it would be better but not all. The momentum gained by the off leg is substantial.
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    #12
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    I have never had a HJer that could jump higher off of 2 feet, despite their insistence that they could. I'd love to see someone do a full frontal flip over the bar, because I think the bio-mechanics would actually be superior, i.e. one's Center of Gravity could be well below the bar, as both the torso and legs could be wrapped around the bar, front and back.

    If someone COULD do it, it'd be on Youtube. All we have are videos of people jumping off a sprung gymnastics floor, like this:

    https://www.youtube.com/watch?v=r9tAgXoRFB8
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    #13
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    I wonder how high Simone Biles could jump.
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    #14
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    Quote Originally Posted by DoubleRBar View Post
    I wonder how high Simone Biles could jump.
    I doubt she is going to be competitive, goodness gracious she looks 4'10".

    Correction, just checked her wiki page, she is 4'8"!!...I dont think I have ever met a woman that short in person.

    With a sprung floor im certain only that she can get over about 6-6.
    Last edited by user4; 01-13-2020 at 08:26 PM.
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    #15
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    :-)
    Atticus and I once had a long go-round here about whether center of mass could be elevated higher jumping off one foot or two...
    I held that two footed jumps were more efficient and Atticus opted for one foot take off with a leg swing.
    Both of us presented absolutely compelling arguments for our point of view and neither of us budged from our original opinion :-)
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    #16
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    Quote Originally Posted by jc203 View Post
    :-)
    Atticus and I once had a long go-round here about whether center of mass could be elevated higher jumping off one foot or two...
    I held that two footed jumps were more efficient and Atticus opted for one foot take off with a leg swing.
    Both of us presented absolutely compelling arguments for our point of view and neither of us budged from our original opinion :-)
    I remember that exchange, that was solid HJ Forum gold !
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    #17
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    Quote Originally Posted by jc203 View Post
    :-)
    Atticus and I once had a long go-round here about whether center of mass could be elevated higher jumping off one foot or two...
    I held that two footed jumps were more efficient and Atticus opted for one foot take off with a leg swing.
    Both of us presented absolutely compelling arguments for our point of view and neither of us budged from our original opinion :-)
    I've seen no bio-mechanical data, but I'm pretty sure that if someone could jump higher off of 2-feet, we would know about it from some hot-shot on Youtube!
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    #18
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    Here is a video of some guys screwing around and claiming to do 2.46.

    https://www.youtube.com/watch?v=zW87tVnDKIU&app=desktop
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    #19
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    Anyways my brother was a gymnast at Oregon and it was amazing the heights they could get with tumbling and 2 feet.
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    #20
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    Also found this in a biomechanics textbook.....no idea how accurate it is.

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