What are normal knee extension/flexion isokinetic ratios?

At 60 deg/s: extension typically 25-35% greater than flexion peak torque. Bilateral symmetry index >90% (deficit <10%) is considered return-to-sport criterion after ACL reconstruction.

At what speeds should isokinetic testing be performed?

60 deg/s for strength (slow speed), 180 deg/s for power (fast speed). Including both speeds captures both maximum force production and velocity-dependent differences.

Knee Extension to Flexion Angular Velocity Ratio Calculator

Assess isokinetic knee extension:flexion peak torque and angular velocity ratios. Evaluate bilaterally at 60, 120, and 180 deg/s to identify strength deficits and asymmetries.

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Distance covered in 12 minutes (meters)

🏅 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.

How to Use

Enter the values for the scenario you are assessing. Assess isokinetic knee extension:flexion peak torque and angular velocity ratios. Evaluate bilaterally at 60, 120, and 180 deg/s to identify strength deficits and asymmetries. Use the knee angular velocity result to inform your calculation.

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