Vertical Loading Rate Heel Strike Injury Risk Calculator

Calculate average and instantaneous vertical loading rate (VLR) from GRF data. VLR >70 BW/s (instantaneous) is associated with tibial stress fracture and knee injury risk.

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🏅 Sports Note: These calculators provide estimates based on population data and validated formulas. Individual results vary by physiology, training level, and testing conditions. Consult a qualified coach or sports scientist for personalized guidance.
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How It Works

Calculate average and instantaneous vertical loading rate (VLR) from GRF data. VLR >70 BW/s (instantaneous) is associated with tibial stress fracture and knee injury risk

Each component has a specific meaning:

  • GRF data — The grf data recorded for the scenario being assessed.

Note: Interpret the loading rate risk result against the thresholds and context described above.

How to Use

Enter the GRF data for the scenario you are assessing. Calculate average and instantaneous vertical loading rate (VLR) from GRF data. VLR >70 BW/s (instantaneous) is associated with tibial stress fracture and knee injury risk. Use the loading rate risk result to inform your calculation.

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Frequently Asked Questions