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150m dash Usain BOLT!!
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Topic: 150m dash Usain BOLT!! (Read 6652 times)
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TKXII
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150m dash Usain BOLT!!
«
on:
March 31, 2013, 09:55:09 pm »
+1
world record video 14.35 (2009)
http://www.youtube.com/watch?v=h0d69bXakUo
14.41 (2013)
http://www.youtube.com/watch?v=w3f_StDCFfM
Tyson Gay 14.51 (2011)
http://www.youtube.com/watch?v=twUSYj-o8Os
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"Performance during stretch-shortening cycle exercise is influenced by the visco-elastic properties of the muscle-tendon units. During stretching of an activated muscle, mechanical energy is absorbed in the tendon structures (tendon and aponeurosis) and this energy can subsequently be re-utilized if shortening of the muscle immediately follows the stretching. According to Biscotti (2000), 72% of the elastic energy restitution action comes from tendons, 28% - from contractile elements of muscles.
http://www.verkhoshansky.com/Portals/0/Presentations/Shock%20Method%20Plyometrics.pdf
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150m dash Usain BOLT!!