Posted by: tom.guerry (tom.guerry@kp.org) on Thu Dec 15 08:57:27 2005

Doug and Jim -

As you may know,I am an arm action dominance believer. Arm action will dominate the organization/demand a certain sequence of overall body motion/postures. I find one advantage of this is that if you have good arm action consisting of a universal sequence that coks and uncoks the bat the same way for each swing,then you load and unload more consistently and more quickly AND the "counterrotation"/excessive backturn/backswing problem becomes somewhat of a nonissue. Jack gets at this arm action with the tht/bht oarlock and shrug type cues among others.I prefer to think of it more kinesiologically as borrowed from the throwing arm action (glove and throwing arm, throwing/dominant arm usually being the back arm when hitting).

The rear arm action sequence is the same as in the overhand throw where you break the hands with elbows up and palms down (or out) which kinesiologically you might describe as abduction and internal rotation of the throwing/back arm (humerus).This arm action interrupts/prevents any excessive backturn/counterrotation as the bat is coked. The sequence then goes on to prduce "pre-launch tht" as the bat turns back to the catcher/begins to uncok,then "tht at launch" which optimizes trunk coil dynamics (creates "x-factor stretch") to set up consistent and quick unloading.