What is the functional H:Q ratio?

The functional H:Q ratio compares eccentric hamstring strength to concentric quadriceps strength at the same angular velocity. A value >0.7 is recommended for ACL injury protection, as hamstrings eccentrically control knee extension during landing.

What H:Q ratio indicates ACL injury risk?

Conventional H:Q ratio 15% is also a risk factor.

Functional Hamstring to Quadriceps Ratio Calculator

Calculate conventional and functional (dynamic) hamstring to quadriceps strength ratio. Conventional H:Q ratio (60 deg/s): 0.5-0.6 normal; functional ratio (ecc:conc) >0.7 recommended.

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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. Calculate conventional and functional (dynamic) hamstring to quadriceps strength ratio. Conventional H:Q ratio (60 deg/s): 0.5-0.6 normal; functional ratio (ecc:conc) >0.7 recommended. Use the h:q ratio result to inform your calculation.

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