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Old 08-23-2012, 05:55 PM   #58
toly
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Join Date: Sep 2010
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I analyzed Federer inside out hard FH on the APAS System http://www.youtube.com/watch?v=pPLmCqGIotM

There are data about his arm speed and acceleration around the wrist during forward swing.



The picture demonstrates that Federer is able to increase acceleration/force of the arm from frame #1 to #9. The magnitude of the force declined after frame #9. Around impact, frame #24, acceleration decreased more than 70%.

So, he is not able to accelerate the arm significantly near impact. But, this is very hard FH and without doubt he is trying to produce maximum acceleration/force.

Question: What is wrong with Federer?
The answer will be tomorrow.
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Anatoly Antipin - one of the most delicate tennis players in the world.
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