Posted by: ray porco () on Sat Jan 21 19:01:31 2006

“…I carried a copy of both papers with me and won a good number of drinks with one or the other … depending on how the other fellow bet.”

Are you telling me/us that depending on the question asked, you have an answer that always makes you right?

Does rotation start before heel plant or not?




“Ray, it just depends on just how exact a standard we can use in video analysis.”

Exactly how exact is your standard?

From
http://www.batspeed.com/research05.html

“The study covered nine years (1988 to 1996) and required literally thousands of hours. The first two years I spent charting the swing of nearly all major league ball players. I would video tape games shown on television and replay the swings back in frame by frame action. By placing a piece of clear plastic over the screen I was able to trace the movement of each part of the hitters body along with the bats reaction. I repeated this for each frame as the swing progressed. From the time the swing was initiated to the point of contact required from 4 to 6 frames depending on the mechanics of the batter.”



1. When does lateral (linear) movement cease?
2. When does rotation begin?