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Specialized Use Case

BMI Calculator for Physical Therapy Assessments

Higher body weight alters joint loading dynamics on hips, knees, and ankles. Calculate a baseline BMI to help physical therapists structure customized mobility, strength, and recovery programs.

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BMI Range Chart

Standard World Health Organization (WHO) categories

CategoryRange
Underweight		< 18.5
Normal weight		18.5 – 24.9
Overweight		25.0 – 29.9
Obese Class I		30.0 – 34.9
Obese Class II		35.0 – 39.9
Obese Class III		≥ 40.0

This chart applies to adults aged 20 years and older. For children and teens, BMI is interpreted differently using age and sex-specific percentiles.

Did you know?

Maintaining a healthy weight is important for overall health. In addition to BMI, healthcare providers use other measurements and factors - such as skinfold thickness, waist circumference, and diet - to assess a person’s health status.

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Professional Tips & Best Practices

1

Joint Stress: Extra weight changes mechanics; structural alignment plans rely heavily on precise baseline details.

2

Injury Recovery: Maintain stable calorie profiles during rehab to prevent unwanted body weight jumps.

3

Professional Supervision: Combine calculations with actual movement tests directed by a qualified physiotherapist.