Legmaker Soccer Performance Lab Equipment Pack

Regulatory Disclosure & Legal Status

1. FDA Status & Investigational Use

The LegMaker Soccer Performance Lab (including all hardware, AI software, and mobile interfaces) is NOT currently registered, cleared, or approved by the U.S. Food and Drug Administration (FDA).

In accordance with 21 CFR Part 812, this device is classified as an Investigational Device. Its distribution is strictly limited to:

• Biomechanical Research: For the purpose of gathering data on human movement and athletic performance.

• Clinical Validation: Ongoing studies intended to support future regulatory submissions.

• Non-Medical Performance Tracking: Use as a "General Wellness" or "High-Performance Sports" tool that does not claim to diagnose or treat specific medical conditions.

2. Scope of Use & Limitations

The metrics provided by the LegMaker Lab, including but not limited to Neural Recruitment Latency and Peak Explosive Torque, are provided for informational and performance-optimization purposes only.

• No Medical Advice: These metrics do not constitute medical advice, diagnosis, or a definitive "Return to Play" clearance.

• Professional Oversight: Any decision regarding an athlete's physical activity or medical status must be made by a licensed medical professional (Team Physician, Physical Therapist, etc.) independent of the LegMaker data.

3. Assumption of Risk

By utilizing the LegMaker Soccer Performance Lab, the purchasing organization acknowledges that the system is in a pre-market, clinical validation phase. The organization assumes all responsibility for ensuring that the device is used under the supervision of qualified sports science or medical personnel.

Technical Specification Summary

• Mobile Command: Package includes a dedicated iPhone 15 for real-time sideline data visualization.

• AI Access: Includes a 6-month license for the proprietary LegMaker AI analytics engine.

• Power System: Features an 8-hour high-capacity rechargeable battery, specifically engineered for autonomous operation in field environments.

Metrics:

1. Peak Explosive Torque ($Nm$)

• What it tracks: The maximum rotational force generated during a soccer-specific motion (e.g., a full-power strike).

• Why it matters: It proves a player has regained the professional-level strength required for match-day intensity, not just basic mobility.

2. Eccentric Braking Index (EBI)

• What it tracks: The ability of the muscles—specifically the hamstrings—to decelerate the limb during high-velocity movement.

• Why it matters: This is the primary injury prevention metric. Poor braking force is the leading predictor of non-contact ACL and hamstring tears.

3. Rate of Force Development (RFD)

• What it tracks: How quickly an athlete can reach peak tension (the "snap" in their movement).

• Why it matters: Soccer is won in milliseconds. RFD tells the coach if a player has their "first step" accelerationback after an injury.

4. Neural Recruitment Latency ($ms$)

• What it tracks: The time delay between the AI stimulation signal and the physical muscle contraction.

• Why it matters: It detects "hidden" neural fatigue. If the brain's signal is slow, the player is at a higher risk of injury, even if they "feel" fine.

5. Limb Symmetry Variance (%)

• What it tracks: A real-time comparison of power output between the injured and healthy limb.

• Why it matters: Most elite clubs (Premier League/MLS) require less than a 10% variance before a player is cleared for full training.

6. Striking Kinetic Chain Efficiency

• What it tracks: The coordination of force from the hip flexor through the quadriceps during a simulated kicking motion.

• Why it matters: It ensures the player is using the correct biomechanical path to generate power, preventing secondary "overuse" injuries.

7. Pivot-Point Stability

• What it tracks: Lateral force stability in the knee and ankle during a simulated "change of direction" maneuver.

• Why it matters: Crucial for wingers and midfielders who rely on rapid cutting and 360-degree agility.

8. Metabolic Efficiency Ratio

• What it tracks: The mechanical work performed compared to the player's heart rate and oxygen response (syncing with club wearables).

• Why it matters: Identifies if a player is "redlining" just to perform basic drills, signaling a lack of aerobic match-fitness.

9. AI Fatigue Forecast

• What it tracks: Microscopic changes in gait and power patterns over the course of a 20-minute session.

• Why it matters: The AI predicts a strain before it happens, allowing medical staff to stop a session at the exact moment the injury risk spikes.

10. The "Apex" Readiness Grade (1-100)

• What it tracks: A proprietary aggregate of all 50+ Lab data points into a single actionable score.

• Why it matters: This is the "Bottom Line" for the Manager: "Is this player 90-minute ready?" ---