1. What is Peak Height Velocity?

Peak Height Velocity (PHV) is the maximum rate of growth in stature during the adolescent growth spurt. It is a key indicator of pubertal growth timing and is used to assess growth patterns in children and adolescents.

2. How Does the Calculator Work?

The calculator uses the Peak Height Velocity formula:

Where:

• \( Height_2 \) — Height at time 2 (cm)
• \( Height_1 \) — Height at time 1 (cm)
• \( Age_2 \) — Age at time 2 (years)
• \( Age_1 \) — Age at time 1 (years)

Explanation: The equation calculates the rate of height growth between two measurement points, providing insight into growth velocity during puberty.

3. Importance of PHV Calculation

Details: Monitoring peak height velocity helps identify growth abnormalities, assess pubertal development timing, and guide interventions for growth-related conditions.

4. Using the Calculator

Tips: Enter height measurements in centimeters and ages in years. Ensure Age 2 is greater than Age 1 for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal PHV value?
A: Normal PHV varies by gender and population, but typically ranges between 8-12 cm/year for boys and 7-11 cm/year for girls during puberty.

Q2: When does PHV typically occur?
A: PHV usually occurs around age 12-13 for girls and 14-15 for boys, though individual timing can vary.

Q3: How often should height be measured for PHV calculation?
A: For accurate PHV assessment, height should be measured at regular intervals (e.g., every 3-6 months) during the growth period.

Q4: Are there limitations to PHV calculation?
A: PHV calculation assumes linear growth between measurements and may not capture rapid growth spurts if measurements are too infrequent.

Q5: Can PHV predict adult height?
A: While PHV timing correlates with maturation, multiple factors influence adult height prediction, requiring specialized methods beyond simple PHV calculation.