The issues you ask about have been discussed numerous times on this forum, though not necessarily resolved to everyone's satisfaction. The Golf World article you referred to is already posted in the Photo Album under Mindy Blake photos.
Winding up on the downswing: I surmise what Blake meant is the muscles between the legs and hands are maximally stretched during the downswing and are thus in their optimal state for transmitting force from legs to hands.
Hands 'Explode': I speculate that Mindy believed the explosion feel was of the power from the legs suddenly being released from the hands to the club. But why would exerting pressure (force applied over time) feel like an 'explosion'? Some might say this reveals that Mindy's swing was really just conventional and he was feeling 'release' as many golfers do.
The reflex idea: My interpretation of Blake's notion is that he thought 'pressure' applied by the legs could be made to be felt at the hands, and by extension the club, by using the muscles between legs and hands as the channel for application of pressure. The in-between muscles are used in 'reflex', not overtly contracted, but rather 'relaxed and stretched'. The backswing (and downswing) stretch the muscles and ideally position the whole body so that pressure can be applied at impact. The downswing is actually a dragging action, ie, the legs pull the upper body down with no apparent effort by the upper body. From his field athletics knowledge, Blake viewed the position of the trail elbow as critical to connecting the lower and upper body. He wrote: "The right elbow is thrust forward across the body so the legs can lever the hands." With the legs and hands as the two ends of a lever, pressure applied at one end (legs) is felt at the other end (hands).
The pressure idea and impact duration: My understanding of the physics of impact between ball and club is that it's a 'momentary collision'. The time duration of impact (about .0004 seconds) is so small that the ball has separated from the clubhead before 'pressure', in the sense of force applied over time, is not operative. This would also seem to negate Blake's idea of the reflex swing producing a longer impact duration than a high-speed swing. SD
This message has been edited by Snakedoc on Jul 24, 2008 12:55 AM This message has been edited by Snakedoc on Jul 23, 2008 9:09 PM
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