Jackson Thorne (@jthorne27) 's Twitter Profile
Jackson Thorne

@jthorne27

saint peters baseball

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calendar_today14-11-2015 18:25:32

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Jackson Thorne (@thornesthrows) 's Twitter Profile Photo

TLDR: - HSS is a product of passivity and orientation - HSS barely matters for taller pitchers - Close the gap quickly from peak HSS to BR - SSC/rubber band > spinning - Solutions > strategy (send energy to the arm) - Taller pitchers have wider affordances

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Skinny pitchers are often told to gain weight to “protect their arm”, which could be not only baseless, but also dangerous for pitchers I analyzed each of the top factors for increased elbow and shoulder torque and distraction forces My findings & bodyweight deep dive🧵⬇️

Skinny pitchers are often told to gain weight to “protect their arm”, which could be not only baseless, but also dangerous for pitchers

I analyzed each of the top factors for increased elbow and shoulder torque and distraction forces

My findings & bodyweight deep dive🧵⬇️
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My plan for this thread was to analyze arm slot specific stresses to assign truly individualized arm care; even accounting for velocity, this doesn't matter at all These are the top 10 factors for increased stress on the elbow and shoulder in both torque and distraction forces

My plan for this thread was to analyze arm slot specific stresses to assign truly individualized arm care; even accounting for velocity, this doesn't matter at all

These are the top 10 factors for increased stress on the elbow and shoulder in both torque and distraction forces
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Body mass is a top 4 metric for each of the 4 measures of stress even accounting for velo At the same velo, every 1lb of BW adds roughly 0.48 and 0.47Nm of elbow valgus and shoulder IR torque, along with 0.92 and 1.19 lbf of increased elbow and shoulder distraction forces

Body mass is a top 4 metric for each of the 4 measures of stress even accounting for velo

At the same velo, every 1lb of BW adds roughly 0.48 and 0.47Nm of elbow valgus and shoulder IR torque, along with 0.92 and 1.19 lbf of increased elbow and shoulder distraction forces
Jackson Thorne (@thornesthrows) 's Twitter Profile Photo

Stress itself isn't inherently good or bad, so I reviewed similar research to quantity body composition to see where adding mass becomes detrimental Pitchers need to gain ~70%+ lean tissue to neutralize added BW, and ~85%+ for a net negative stress on connective tissue (1,2,3)

Stress itself isn't inherently good or bad, so I reviewed similar research to quantity body composition to see where adding mass becomes detrimental

Pitchers need to gain ~70%+ lean tissue to neutralize added BW, and ~85%+ for a net negative stress on connective tissue (1,2,3)
Jackson Thorne (@thornesthrows) 's Twitter Profile Photo

However, strength outpaces mass and offsets fat. For untrained individuals this can look like theoretically handling as much as 22lbs of fat, while MLB veterans may be unable to continue adding strength to account for even roughly 0.5lbs of fat in an entire year (1,2,4)

However, strength outpaces mass and offsets fat. For untrained individuals this can look like theoretically handling as much as 22lbs of fat, while MLB veterans may be unable to continue adding strength to account for even roughly 0.5lbs of fat in an entire year (1,2,4)
Jackson Thorne (@thornesthrows) 's Twitter Profile Photo

I believe elbow valgus torque is an overrated metric, and does NOT accurately predict elbow stress. WILD claim to make, but here is my (3,000+ word notes app blog) attempt at defending that: (1/2)

I believe elbow valgus torque is an overrated metric, and does NOT accurately predict elbow stress.

WILD claim to make, but here is my (3,000+ word notes app blog) attempt at defending that: (1/2)
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The goal of mechanics is to transfer as much energy as possible through each segment and into the arm. I made reports to measure energy flow throughout the delivery, which can help identify and visualize this for athletes Here’s the 4 hardest throwers in drivelines open biomech

The goal of mechanics is to transfer as much energy as possible through each segment and into the arm.

I made reports to measure energy flow throughout the delivery, which can help identify and visualize this for athletes

Here’s the 4 hardest throwers in drivelines open biomech
Jackson Thorne (@thornesthrows) 's Twitter Profile Photo

New blog on the nervous systemn. I look at the root cause of NS inputs to identify threat responses the nervous system must first navigate before it can even address the challenge of orchestrating a solution to increase velocity

New blog on the nervous systemn.

I look at the root cause of NS inputs to identify  threat responses the nervous system must first navigate before it can even address the challenge of orchestrating a solution to increase velocity
Jackson Thorne (@thornesthrows) 's Twitter Profile Photo

A pitcher's throw is governed by the nervous system, not forcing mechanical changes High velocity mechanics cannot emerge until the nervous system believes it can safely send more energy to the ball🧵⬇️

Jackson Thorne (@thornesthrows) 's Twitter Profile Photo

Velocity is the expression of what the nervous system allows, not what the player can force The primary goal of the nervous system is to ensure survival, not to execute pitches at 97mph A pitcher throwing 90 must address constraints that the nervous system perceives as a threat

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Nervous system can view pain, strength limitation, injury history etc as a threat; a holistic assessment is needed to identify these Clearing underlying issues ensures we don't build on a foundation of mud A minor, un-rehabbed ankle sprain can affect the throw and arm for years

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Ankle sprain & shoulder ER/scap retraction at foot plant can seem unrelated If single leg stability is a threat the nervous system will get to safety by "flying open", swinging lead leg into early FP The arm doesn't have a chance to get in position to accept energy & accelerate

Jackson Thorne (@thornesthrows) 's Twitter Profile Photo

A pitcher who pops Advil regularly may hit a small PR on one random day, but won't see consistent progress If the current velo provides a threat, the NS refuses to allow more energy You can only override this with stimulants and adrenaline... not suited for long term adaptation

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Velocity growth is the NS ensuring the current velo is safe & allowing more energy into the arm First build an engine to produce copious energy Then refine the control center directing the energy or the NS will use “mechanical leaks” to get rid of excess energy it can't handle

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In the full blog I discuss not only identifying but correcting deeper layers, how off-field habits set the nervous system's ceiling, & using motor learning to tap into what the nervous system allows Link in the reply to read the entire blog ⬇️