Overall Efficiency Grade

Mobility, Flexibility & Stability Screening

Jared had was able to control his pelvis during the Pelvic Tilt test, but did have some vibration during the movement.  This is caused by an imbalance between his lower back and lower abdominal muscles.  He struggled with Pelvic Disassociation, which may limit the core speed climb.  Torso disassociation was good.

His left ankle dorsiflexion was the limiting factor in his squat test.  Attack this in his mobility plan.

Jared is “hypermobile” in his T-Spine rotation.  This will need to be factored into his loading style to take the slack out of his core.

His left side shoulder external rotation lessened in his hitting posture.  He is short in his shoulder internal rotation.  Shoulder flexion was adequate.

We were able to get 3-4 fingers under his scaps and he showed some instability during the Reach, Roll and Lift test.  This area should be a focus of his strength plan.  He is in the “loose” category for Scapular Retraction (8″ right and 10″ left).  He will require a bigger than average upper body loading mechanism on both sides.

Jared’s Single Leg Balance test was excellent on both sides.  Glute Bridge test was good also and he showed great core stability throughout the screen.

He is neutral in his hip internal and external rotation. His side bend was greater to the right side (60 degrees) than the left side (45 degrees).

All wrist and cervical screens were passed.

Force Plate Jumps

Jared has a slight right leg imbalance in the “watch” stage.  The bias ranged from 7-10% per jump. Counter movement jumps were significantly higher than the squat – pause jumps at 319% BW for CMJ and 282% for SJ. This indicates his body prefers to transfer energy in a shorter period of time. This shows up in his swing as well.

Force Plate Swings

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

On the left side, Jared loads into his toes but still creates a good amount of back leg loading force at 108% BW. He holds force into the ground very well in his positive move. He creates his hip counter rotation during that forward move and gets up to the desired 45 Nm of torque.  Jared’s preferred method of creating speed in torque force. He tested at 187 Nm of torque force. Horizontal force was excellent at 97% of BW which means he posts against the front leg hard. Z axis vertical force had a rapid rate of force production although the vertical numbers were lower than the horizontal and torque forces at 161% BW.

On the right side, Jared loads more into the mid-foot and creates more loading force at 111% BW. He holds force into the ground during the forward advance. His preferred method of speed on the right side of more horizontal, linear push. Therefore, his linear hand speed is higher, yet the bat speed (whip) is lower than his left side. Vertical force was slightly higher at 165% BW and torque forces were lower at 100 Nm. Leg to leg transfer speeds are excellent as he maintains pressure to the ground with his back leg into his forward turn. Thus his TTI, is better from the right side.

KVEST Sequencing & Rotational Speeds

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

Jared creates more torque force on the left side, but was in and out of sequence. Turns the bat well from the left side, gets on plane sooner and creates better barrel whip. Hip rotational speeds are at 800 deg/sec which rates as “elite” on Real Speed graph. Energy transfer to the core was “good” at over 1000 deg/second. Lead arm values build well at 1120 deg/sec. and wrist speeds are good at 1740 deg/sec. The difference in his in sequence and out of sequence left handed swings was the ability to hold the scap so the core turned first and created more stretch/speed.

On the right side, Jared tightens the sequence. It starts and builds well in his lower body, but he gets a linear push in his upper body. So linear hand speed is higher, but angular speeds are lower and the barrel gets on plane later despite having a faster TTI. Angular hip speeds are around 750 deg/sec. which is “good” on the Real Speed scale.   Sequencing is tighter so it doesn’t build speed quite as much. Torso speed is still “good” at 970 deg/sec. Lead arm speed builds to the 1200’s, but wrist speeds are lower in the mid 1500’s for most.

Bat Sensor Data

Bat speed from the left side was slightly below average at 65-68mph. Rotational acceleration was average at 10 to 13G’s. Time to impact was average at 160 milliseconds. Attack angles to the ball were high at 15-24 degrees and he maintains posture through the turn as you can see below. The bat stays in a true arc.

From the right side, his hand speed is higher than his left handed swing but the bat speed is lower. Bat speed is well below average at 61-65 mph. He does have a good sequenced lower body and the bat stays tight to his body but gets on plane late and is steeper. Attack angles were in a flatter range, which is good for a line drive approach at 3-10 degrees. Although, he gets on plane later, so timing will be more important for him out in front of home plate. Time to impact was roughly the same at 160 milliseconds.

Summary & Recommendations

Left Side:

• Hold the scap load longer for consistent sequencing.
• Continue to work unilateral leg lifts with strength and conditioning.

Right Side:

• If the goal is to get him on plane sooner, he will have to create some hand action that allows him to maintain separation so the hands to fire in the sequence and push manually so quickly.

• Tightening the turn by creating more core stretch in his loading mechanism.
• Slightly more torque force in the lower body load (counter-rotation).