THREAD: After recapping our kickback data from the 2017 presentation, we discussed trunk decels during our presentation at @LantzWheeler’s Palooza this year.

In this video, you can hear JD tell Mookie, “You didn’t stick that one.”
If you hang around our shop you’d know this is..
a term we use often. The term encompasses a number of things, but predominantly we associate it with ball compression.

Much like Bruce Lee’s one inch punch, a hitter’s ability to create and transfer force in small windows is something we directly correlate with their hit tool.
Throughout the dynamic movement of a swing, we want hitters to capture energy up the chain. Each segment of the chain accelerating and properly decelerating conserving energy and momentum from segment to segment. This @KMOTION3D graph below gives us a clear representation of this
To efficiently accelerate a secondary mover, the primary mover must stop. The stopping action is what accelerates the secondary mover and supplies direction. In the beginning of the gif below you can see how the secondary lever is just being dragged through. This is
an inefficient way to accelerate the secondary mover. As you can see, when the primary mover is stopped that’s when the secondary mover is efficiently accelerated and provided direction.

A flawed perspective would be that we want to spin as hard as we can with our lower half...
And just drag the rest of our body and bat into the zone. If we want to efficiently transfer force we need to stop IN SEQUENCE.

In the clip below you see JD hitting a bomb to CF at 110mph. Watch close as you watch each segment of the body decelerate in sequential order.
Not only do you see each segment stop, but check at how his rear hip never even squares to the front hip. They are almost pointed at the second baseman as the ball exits to center field.
Take another look back at the original video and notice how they are exaggerating their stop finishes.

We would classify these moves as compression moves/feels that efficiently decel the trunk and transfers force in to the baseball.

In the last section of the original video...
you hear Mookie talk about how he actively thinks about swinging softer and slowing everything down. He’s matching his feel in the cage with what he feels in the game when everything is clicking.

We often see bat speeds go 👇🏼and EV’s go 👆🏼when we start teaching this move.
We have players with high 60- low 70 bat speeds that consistently pop balls over 100mph. Just notably the other day, we had a player have a 73.6 mph bat speed pop a ball at 108.2 EV. (108 get it😉)

It’s also not earth shattering for us to have high schoolers that come in with...
higher bat speed than our notable pro players. It’s also not shocking when those high school players often don’t have EVs anywhere close to our professional athletes. Ball compression.

An additional benefit of not swinging out of your ass, your head and your eyes aren’t bouncing
around. As Mookie says, “I can just see the ball so much better”

So let’s do the math:
1.) Less Movement
2.) More Efficient
3.) Higher & Consistent EVs
Director of Hitting: @_joeycunha
Owner/Director of Player Development: @108_Performance
You can follow @108_Hitting.
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