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Old 07-23-2011, 01:13 AM   #1841
Derek Weaver
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Originally Posted by Andrew Wilson View Post
I almost fell out of my chair laughing. All that "midline stabilization" he's telling him to do is restricting movement, blood flow, and wasting energy. The entire torso is suppose to be completely relaxed, even hands and face (notice sprinters like Tyson Gay with flailing hands). Stabilization in running is neurological
Andrew,
I read an article a few months back on the corkscrew with the arms in sprinting. Something about how the fascia corkscrews around the body (ie, right shoulder tight often equals a tight/stiff left hip, I think). They had a sprinter, who i can't remember, who had shown big improvements.

I haven't seen anything else about it though.

You hear about this before?
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Old 07-23-2011, 07:10 AM   #1842
Russell Crosswy
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Where is that EMG image from?


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hahahaha wow this man http://media.crossfit.com/cf-video/C...ng_tw0_PRE.mov




Look you do not intentionally "pull your foot up" or intentionally "contract your hamstrings" to bring your foot up - this is how you tear your hamstring.
You don't "stop using the hamstring, because you have to" this is complete nonsense.
Bmac is teaching people how to tear their hamstrings.



In the support phase (middle row, 4th picture in the lagat picture above) you are absorbing impact, just like a box jump, and eccentric muscle action is happening to control this impact and the body sinking, it switches to concentric contraction for the push off and leg drive (middle row, 5th picture, and bottom row). The whole point of this leg drive and pushoff is to propel your center of mass forward (your hips). This is why runners have low vertical jumps and long horizontal jumps- because they're NOT vertical "jumpers", they're horizontal "jumpers"- GLASSMAN. When the leg drive ends into flight phase (top row, 4th & 5th picture), all that muscle tension in the concentric pushoff and leg drive is released into free air being its not fighting the ground anymore; this is why the faster you sprint, the more force generated, the further your leg flys behind you= tension release. THIS IS A REACTIONARY MOVEMENT, NOT VOLUNTARY. The hip flexors in this back leg drive and pushoff are stretched in an eccentric contraction (left leg, top row, 4th picture), in flight phase, this stretched eccentric tension is released, immediately turns concentric, and swings the thigh forward, the hamstrings eccentrically tense to act as stabilizers and control the ROM (this is NOT A VOLUNTARY CONTRACTION), shin folds under, the closer the shin folds into the body, the smaller the lever, smaller levers travel faster.

Bmac isn't teaching ANY OF THIS. He's just saying pull your heel up and lean, this is nonsense.


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Old 07-23-2011, 08:17 AM   #1843
Andrew Wilson
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World Record technique:
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Crossfit technique:
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Old 07-23-2011, 08:34 AM   #1844
Andrew Wilson
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Where is that EMG image from?
http://www.coachr.org/hamstring_inju..._sprinting.htm
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Old 07-23-2011, 08:47 AM   #1845
Andrew Wilson
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Andrew,
I read an article a few months back on the corkscrew with the arms in sprinting. Something about how the fascia corkscrews around the body (ie, right shoulder tight often equals a tight/stiff left hip, I think). They had a sprinter, who i can't remember, who had shown big improvements.

I haven't seen anything else about it though.

You hear about this before?
Haven't heard that before, should look into it.
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Old 07-23-2011, 08:51 AM   #1846
Donald Lee
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That side-by-side comparison really makes BMac's technique look laughable.

Since running technique has been brought up, I think people could appreciate the following threads:

http://www.elitetrack.com/forums/viewthread/7911/

Regarding the above thread, there was a MASSIVE debate on the Supertraining list, so some may not follow what they're arguing and the terminology used in the above thread. Looking at the Barry Ross thread on this forum might help to understand what they're talking about in the above and below thread.

http://www.elitetrack.com/forums/viewthread/4510/
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Old 07-23-2011, 08:56 AM   #1847
Donald Lee
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Quote:
Originally Posted by Derek Weaver View Post
Andrew,
I read an article a few months back on the corkscrew with the arms in sprinting. Something about how the fascia corkscrews around the body (ie, right shoulder tight often equals a tight/stiff left hip, I think). They had a sprinter, who i can't remember, who had shown big improvements.

I haven't seen anything else about it though.

You hear about this before?
I wouldn't be surprised if there were some improvements. Fascial work can be amazing.

http://www.structuralwisdom.com/Anat...ain_Lines.html
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Old 07-23-2011, 09:01 AM   #1848
Andrew Wilson
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Crossfit technique:
Rudisha (800 WRH)


Bolt
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Old 07-23-2011, 10:55 AM   #1849
Corey Kissel
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Just another gem I came across...WFS

http://www.denverpost.com/ci_18534215
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Old 07-23-2011, 12:17 PM   #1850
Steven Low
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I don't exactly see how thrusters are gonna help Moreno's speed or cutting ability as a running back but ok.
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