Chicagoland (773) 739-2170
 

Broder Katke

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Overall Efficiency Grade: 64.50

 

Mobility, Flexibility & Stability ScreeningForce Plate SwingsKVEST Sequencing & Rotational SpeedsBat Sensor DataSummary & Recommendations

Mobility, Flexibility & Stability Screening

 

Broder is in the “neutral” mobility category. His thoracic mobility was in the “neutral” category at 60 degrees of rotation to the right and left. There was vibration in the lower back during the pelvic tilt test, which shows the lower abdomen is more developed than the lower back. He was good in the pelvic rotation test with assistance, which indicates that he has some, but limited ability to disassociate his upper and lower body efficiently. Torso disassociation was good. This will give him the ability to create energy transfer through torque.

Broder failed the overhead squat test due to limited thoracic extension. He has core instability which will limit ultimate energy transfer speed up the chain.

He has weakness in the scapular region, which will help reduce torque through his upper body anchor. His scapular retraction was in the “neutral” category. Shoulder flexion was good, as was external rotation. Internal shoulder rotation was good.

Hip rotational mobility was “neutral.” He was able to turn 45 degrees in the right internally and 45 degrees to the left. Externally, he was 45 degrees on the right and 45 degrees to the left.

His lower body showed average left and right leg stability, and his glutes stabilized very well during the glute bridge test. Hamstrings are very tight and 4 inches short of reaching his toes.

Side bend was adequate in both directions.

All wrist and cervical screens were a pass.

 

Force Plate Swings

Below is video of the swing analysis. I will walk you through this matched up with video.

 

Broder loads into more of the front of his foot instead of the back part of his foot. Back leg loading numbers are good at 98% of his body weight but he pushes out of his load and transfers some energy forward with his stride instead of gaining ground while still staying anchored into the ground.

Front leg force was average and the rate of force production was average as well. He has 160% of BW in his front leg. 200% is the number we are trying to hit. He’ll need a more violent interaction with the ground with his front heel, once it plants. His preferred method of creating speed is horizontal force. He has 15 Newtons of torque in his back leg, which is lower than the 45 Nm we are looking for. He’ll need to counter-rotate his hips more in his load to get more torque. His front leg resisting force on the x axis is 70% BW, which is good. However, the x-axis timing number is 50% which means he’s slipping into his front leg before he makes the turn. Training to gain ground while still staying attached to the ground will make for better adjustability.

 

 

KVEST Sequencing & Rotational Speeds

The 3d readings are on kinematic sequencing and rotational speeds.

 

Sequencing is good, but there are limited gains in energy transfer due to the lack of scap load. Turn speeds are average on our “Real Speed,” scale. Hip turn speed of 730 deg/sec is “average” on our “Real Speed” scale. He gets small builds in hip to core and core to lead arm transfer. Torso speeds of 990 deg/sec is “average” on the Real Speed scale. Lead arm values lose speed due to the lack of scapular load and are at 830 deg/sec.   Wrist speeds are “average” at 1800 deg/sec. With more scap load, he will tighten the core more and gain more speed up the chain.

 

 

Bat Sensor Data

 

Bat speeds were average for age at 53mph on a Blast sensor. Attack angles to the ball were good at 10-18 degrees. Rotational acceleration is very low at 3g’s. I attribute this to the lack of scap load not allowing the turn to be as “tight.” Time to impact was longer than I’d like at 180 miliseconds, for the same scapular reason. Vertical bat angle gets flatter than I’d like, which will make for more “mis-hit” balls.

 

Summary & Recommendations

  • Getting into a bigger scap load and holding that will improve torque.
  • Stay anchored to ground in back leg into the turn vs. pushing away from the back shoe.
  • Focus on gaining speed through leg interaction and torque.
  • Improve scapular region strength for better torque in the swing.

 

Drills on Elitebaseball.tv

  • PVC Progression for scap load
  • Continous pinch drill for scap load
  • Pitcher’s knee lift for lower body anchor
  • Feet together, step and hit for lower body anchor
  • Take / Hit Drill on tee and flip

 

 

The Epidmic of American Hitters Over coaching a "short" swing leads to
pushing the bat. http://www.elitebaseball.tv/blog/category/...
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