Relative Energy Deficiency in Sport (RED-S) is the IOC expanded model of the Female Athlete Triad, recognizing that low energy availability affects both male and female athletes, impairing bone health, hormones, immunity, and performance.

What are RED-S high-risk indicators?

Eating disorder behavior, menstrual dysfunction (3+ missed periods), multiple stress fractures, Z-score below -2, amenorrhea over 12 months, BMI below 17.5, and clinically significant bradycardia are high-risk indicators requiring medical clearance.

Relative Energy Deficiency in Sport (RED-S) Risk Score Calculator

Calculate IOC RED-S Clinical Assessment Tool (RED-S CAT) score. Assess bone stress injuries, menstrual dysfunction, hormonal changes, and psychological indicators. Score determines return-to-sport clearance.

Core Tools

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 IOC RED-S Clinical Assessment Tool (RED-S CAT) score. Assess bone stress injuries, menstrual dysfunction, hormonal changes, and psychological indicators. Score determines return-to-sport clearance. Use the red-s risk score result to inform your calculation.

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Relative Energy Deficiency in Sport (RED-S) Risk Score Calculator

How to Use

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Frequently Asked Questions

What is RED-S?

What are RED-S high-risk indicators?