Transcript
XBtBdNHBNSI • In high jump, your centre of mass goes under the bar
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Language: en
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I am about 1.75 m tall but some of the
world's best high jumpers can clear more
than half a meter above
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that this is Josh Lodge an Australian
high jumper what's your personal best
high jump 2 minutes
22 that's pretty high the record is uh s
myor from Cuba it's
about this High 8T and a half an inch
245 uh same height as a full full men's
volleyball net can you tell me about
what it's like to be a Hy it's just
really fun like everyone who sees it I
know always wants to do it right yeah
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exactly so can you teach me to jump as
high as
you
uh I don't know he knows that he can't
tell me about the technique that all the
modern High jumpers use so they do the
fby flop so that's with the J curved run
up generally you have a a straightish
sort of part and then the last part of
the run up is curved it's half straight
half half curved yeah so that you can
have more speed and it puts you in the
right position to then get the rotation
and and go over on your back and what
foot do you take off on uh you take off
on your left
foot yeah yeah that's right so if you
can only really think about one thing
drive up that Lake I tell people to
drive up that
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lake so what did I do wrong there well
how much time do we
have you started on the wrong foot come
on you can get
this so before The Fosbury Flop the main
technique that people used was the
straddle yeah the straddle or I think it
was also known as the western roll with
that technique athletes came on a much
sharper angle to the bar in a straight
line and they took off from their leg
closest to the bar and um did they go up
frontwards or also back they went they
went over the bar on on their front they
still required some sort of mats for the
straddle but I'll show you a scissor uh
that was another one that was from the
days when you had to land on your feet
the days of Saw dust so I think that was
more like before the 50s pretty much the
same as a takeoff to fby flop and then
you just land on your feet yeah you land
on your
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feet that's a really old one and it's
what they did when they didn't have any
mats so really adding the mat really
changed the way people jumped yeah yeah
and obviously without having to worry
about Landing safely they could they
could jump higher regarding the the
physics of it why is The Fosbury Flop
the superior
technique
well i' I've heard that it it allows
your center of Mass to actually pass
underneath the bar your entire body
clears the bar but not all at once so
you you're keeping like your legs and
your arms sort of underneath the bar if
you average where your center of mass is
it it's under the bar whereas like the
other techniques they seem to you know
you have to have your whole Center Mass
clearing the bar so technically it's
it's harder like you you're getting your
mass up high in order to clear the bar
yeah that would make sense because with
the straddle technique when you go over
you've got half your body going over the
bar all at once yeah whereas in the Flop
my coach used to talk about it uh like a
hose so the water coming out of a hose
you you only need to get each bit above
the bar at the right time as opposed to
all of it at
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once
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