Interesting Data on Hand Speed

There is some interesting data coming out of Athletic Motion Golf's YouTube site regarding peak hand speed in the downswing as determined by Gears 3D. It seems that pros achieve a peak hand speed earlier(hands around belt height) in the downswing compared to amateurs. Achieving an earlier peak hand speed means that the club head will be further away from the ball compared to a later peak hand speed and thus allow more time to convert the hand speed to club head speed. I wanted to get Tyler's take on this data and how do you think pros are achieving this. The video link is as follows: https://youtu.be/JdEmOgWn0do

Ron, I have seen the same pattern in my 3D experience. In fact, here's an excerpt from the book I published a few years ago that says the same thing (pic 1). The other two pictures are the graphs of mid-hand speeds. The first one shows an amateur reaching peak speed at about the same time as the example in the video. The second one shows two pros, one a long hitter and one a short hitter. At that level, the difference in position can be more subtle.

Personally, I see the greatest change in the timing of peak hand speed from getting the body (especially the legs) more involved in the transition. When the arms push on the club in a rotational way (torque vs force), they speed up the clubhead end but they slow down the grip end. I have a lot of success with training a quality delivery position to help work out that timing.