🔬 Free · PhD-Backed · Peer-Reviewed Science
Is Your Arm
At Risk?The first dual-domain player risk index
Get your personalized Arm & Hip Risk Index — the same dual-domain analysis used in every ForceIQ evaluation. Built on MLB research by Byram (2010) and Plummer (2022). For all positions.
10,000+
Athletes Trained
50%
Players With Arm Pain
1.24×
Risk Per 5% Hip Asymmetry
⚡ Baseball Player Arm Risk Assessment
Free · 2 minutes · No credit card required
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Step 1 of 4 — Player Profile
Throwing Exposure & Workload
Months per year throwing competitively? *
Teams playing on simultaneously? *
Showcases / tournaments per year? *
Arm Health History
Shoulder or elbow pain while throwing? *
Tommy John or major shoulder surgery? *
Current arm care program? *
Hip & Kinetic Chain Health
Plummer et al. (2022): every 5% hip ABD asymmetry = 1.24× injury risk. The lower half causes arm injuries.
Hip pain or impingement while pitching? *
Hip rotation tightness? *
Strength training frequency? *
Lower-body / hip program specifically for pitching? *
Your Risk Index Is Ready
Enter your info to unlock the full dual-domain report
Overall Risk Index??/100
Arm Risk Score??
Hip / Kinetic Chain Risk??
Velocity Impact+?? mph
⚡ Want the Full Measured Assessment?
This report gives you the self-reported picture. ForceIQ gives you exact isometric force numbers — your actual ER:IR ratio, your actual hip ABD asymmetry, your actual bilateral deficits. Then a personalized protocol to fix each one.
Access ForceIQ Portal — $397 →
Running dual-domain risk analysis…
🔒 Private. We never sell your data.
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TopVelocity Performance Medicine
Baseball Player Injury Risk Assessment · Brent Pourciau, M.S. Kinesiology · PhD Health Sciences
Based on: Byram et al. AJSM 2010 · Plummer Sports Health 2022
CONFIDENTIAL ASSESSMENT REPORT
Baseball Player Risk Report
Dual-Domain Injury Risk Index · Arm Integrity + Hip/Kinetic Chain Integrity
Overall Risk Index
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Arm Risk
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Hip / Chain Risk
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Velocity Lost
— mph
to risk factors
Overall Injury Risk Index
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Out of 100 · lower = safer
— Risk
Dual Domain Breakdown
Arm Risk
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Shoulder · Elbow · UCL · Rotator Cuff
Hip / Chain
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ABD · IR/ER · Drive/Stride Leg
Kinetic Chain Integrity
Why the Hip Destroys the Arm
Every pitch travels through a kinetic chain — a sequence of body segments that must fire in the right order, at the right time, with enough force. When any link is weak, the next link pays the price. The arm is always the last link. It absorbs every deficit from every joint above and below it.
Kinetic Chain Integrity
Based on your assessment responses
Your profile
Full integrity
How Hip Weakness Becomes Arm Injury
Drive Leg Hip — Force Generator
The drive-leg hip external rotators initiate the kinetic chain. They create pelvis-first rotation — the most important mechanical event in pitching. A weak drive hip means the pelvis can't lead the upper body.
Plummer 2022: Every 5% hip ABD asymmetry = 1.24× injury risk
↓ Force cascades upward through the kinetic chain
Stride Leg Hip — Energy Transfer
The stride-leg hip blocks at foot strike, redirecting lower-body energy into trunk rotation. Insufficient stride-leg hip ER prevents hip-shoulder separation — the gap that generates whip.
Stride-leg deficit → shorter stride → 2–4 mph velocity loss per pitch
↓ When hips fail to generate, the trunk compensates
Core / Trunk — Compensates
The core tries to make up what the hips couldn't generate. It fires earlier, rotates faster than it should. Hip-shoulder separation collapses. The kinetic sequence breaks down.
Early trunk rotation = #1 mechanical cause of elevated elbow valgus torque
↓ The arm fires alone, without the chain behind it
Throwing Arm — Absorbs Everything
The arm fires earlier to compensate for lost chain energy. Internal rotation velocity spikes. The decelerators (posterior cuff) must stop the arm at speeds they weren't designed to handle alone — pitch after pitch, season after season.
Result: UCL stress, rotator cuff overload, Tommy John risk
📚 The Research
Byram et al. (AJSM 2010, n=296 professional players): A single pre-season ER:IR ratio measurement predicted which players would require shoulder surgery with 64% concordance — more predictive than pitch count, age, or pain history. Plummer et al. (Sports Health 2022, n=188 MLB minor leaguers): Hip abduction asymmetry was the strongest independent predictor of throwing-arm injury, outperforming all arm-specific variables.
Clinical Risk Analysis
Key Risk Findings
Performance Impact
Velocity Being Left on the Field
— mph
Estimated velocity loss from arm & hip risk factors
When the kinetic chain breaks down — weak hips, poor hip-shoulder separation, early trunk rotation — the arm makes up the difference. That compensation costs velocity AND creates the mechanical overload that leads to injury. You can't throw hard and stay healthy with a broken chain.
Where the velocity is going:
⚡ The Fix
Get Your Exact Numbers
This report shows the pattern. ForceIQ gives you the measured data — your actual ER:IR ratio, your actual hip ABD asymmetry, your actual bilateral deficits across 16 force tests. Then it builds a personalized protocol to fix each one.
✓ ER:IR ratio (surgical predictor)
✓ Hip ABD asymmetry % (Plummer 2022)
✓ Bilateral scaption & serratus
✓ Hip ER/IR drive + stride leg
✓ Personalized fix protocol
$397 one-time · Full player portal · Cancel anytime
Also includes: MechanicsDNA video analysis · PitchDNA grading · Remote coaching · Weekly programming
Clinical Protocol
ForceIQ: 16-Test Arm + Hip Assessment
The same force-measurement protocol used by MLB organizations — now available to every player. Each test produces a bilateral comparison and a normative percentile for your age and level.
ER:IR Ratio — Posterior cuff deceleration capacity vs internal rotator force. The Byram 2010 surgical predictor.
ARM
Serratus / Scaption Bilateral % — Scapular stability; asymmetry exceeding 10% drives impingement.
ARM
Grip Strength Bilateral — Integrated arm fatigue proxy; 5%+ drop signals workload modification needed.
ARM
Hip ABD Asymmetry % — The Plummer 2022 primary MLB injury predictor. Drive vs stride leg force balance.
HIP
Hip ER/IR Bilateral % — Drive-leg ER initiates the kinetic chain. Stride-leg ER controls hip blocking at foot strike.
HIP
Hip Flexion / Extension Force — Controls stride length and drive-off mechanics. Determines hip-shoulder separation angle.
HIP
Player Registration · ForceIQ Portal
Your Chain Is Fixable.
Your Velocity Is Recoverable.
Athletes in the TopVelocity ForceIQ system fix the exact deficits your risk report flagged — with measured force data, not guesswork. Average gain: 8–12 mph in 16 weeks.