Sit-and-Reach Percentile Calculator

Convert sit-and-reach distance to age and sex fitness percentile using ACSM normative tables for hamstring and lower back flexibility assessment.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Convert sit-and-reach distance to age and sex fitness percentile using ACSM normative tables for hamstring and lower back flexibility assessment

Each component has a specific meaning:

  • ACSM normative tables — The acsm normative tables recorded for the scenario being assessed.

Note: Interpret the sit-and-reach percentile result against the thresholds and context described above.

How to Use

Enter the ACSM normative tables for the scenario you are assessing. Convert sit-and-reach distance to age and sex fitness percentile using ACSM normative tables for hamstring and lower back flexibility assessment. Use the sit-and-reach percentile result to inform your calculation.

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Frequently Asked Questions