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Sally Pearson WR Hurdles at the London 2012 Olympics?

You are here: Home / Coaching / Sally Pearson WR Hurdles at the London 2012 Olympics?
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August 7, 2012 by Jimson Lee Leave a Comment

Last Updated on March 10, 2013

I often wondered how some of the Women’s world records were almost impossible to break (with the exception of the recent additions of the Pole Vault, Triple Jump and Hammer Throw).  The reason was possibly the “looser” drug testing policies from the 1980’s.

Hence, I never thought I would see the 12.21 WR of Yordonka Donkova 100 meter hurdles broken anytime soon.

But Australia’s Sally Pearson came ever-so-close with her 12.28 last year at the 2011 Deagu World Championships.

People think she can break it because “Speed Wins”, just like USA’s Gail Devers who also excelled at the 100 meters open race.  Sally Pearson comes in with a 100 meter PR of 11.14.

Sally Pearson London Olympics

Stride length vs Stride Frequency, Flight Time vs. Run Time

Sprinters (and their coaches!) analyze stride length and stride frequency at nausea, and for some coaches, the holy grail is reducing ground contact time.

The 100m sprint can be summarized as ~45 synchronized large leaps and bounds, unless you are Usain Bolt where it’s “only” 41 strides.

But the high hurdles has those darn sticks in the way.  Just ask:

  • Gail Devers
  • Perdita Felicien
  • Lolo Jones

Thus Hurdle coaches love to measure the Flight time vs Run time.

Yes, the high hurdles is a sprint, but instead of being obsessed with stride length, stride frequency, & ground contact time, it’s about clearance (i.e. flight time) and the run time.

Take a look at some stats:

Woman's 100m Hurdles Analysis of Flight Time and Run Time

Obviously, you want the fastest flight time and run time without compromising the total time.

READ  Who is Johan Wissman of Sweden? Or how to run a 300 meters...

In Daegu 2011, Sally Pearson’s flight time was 0.28sec for five of the 10 hurdles (Hurdles 2,3,4,5,6), four at 0.29sec (H1,7,8,9) and one of 0.30sec (H10) in Daegu. 

If she can get all 10 hurdles at 0.27, that would be 2.70 for total flight time and with her given speed, she will easily break the world record, assuming not compromising the run time.  (Pearson’s PR for 100 meters is faster than Donkova)

However, to get a 0.27 second flight time for ALL 10 hurdles is like asking in Golf for an Eagle for every Par 5, and a Birdie for every Par 3 & 4 on a golf course.  In a perfect day, you would shoot 50 in golf for 18 holes!  Who does that?  Not even Tiger Woods!

When you consider 8.50m between hurdles, and a 3.20m total flight clearance, that leaves 5.30m for 3 strides (1.77m) instead of the usual 2.17 in normal sprinting.  So having speed helps, but it’s having a faster “stutter steps” speed between hurdles faster than everyone else.

The London Mondotrack Track is fast, but hopefully not too fast so you have to chop your final step or else you will crash into the hurdles!  Hey, it’s been done before!

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Jimson Lee

Jimson Lee

Coach & Founder at SpeedEndurance.com
I am a Masters Athlete and Coach currently based in London UK. My other projects include the Bud Winter Foundation, writer for the IAAF New Studies in Athletics Journal (NSA) and a member of the Track & Field Writers of America.
READ  Coaches Roundtable: Sports Medicine for Performance, Peaking and Recovery
Jimson Lee

@speedendurance

Jimson Lee
Jimson Lee
Jimson Lee

Jimson Lee

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Jimson Lee

Category iconCoaching,  Hurdles,  London 2012 Olympics,  Track & Field Tag iconSally Pearson

About Jimson Lee

I am a Masters Athlete and Coach currently based in London UK. My other projects include the Bud Winter Foundation, writer for the IAAF New Studies in Athletics Journal (NSA) and a member of the Track & Field Writers of America.

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