1. What is Peak Height Velocity?

Peak Height Velocity (PHV) is the maximum rate of growth in stature during the adolescent growth spurt. It represents the time when an individual is growing at their fastest rate, typically occurring during puberty.

2. How Does the Calculator Work?

The calculator uses the Peak Height Velocity formula:

Where:

• \( Height2 \) — Later height measurement (cm)
• \( Height1 \) — Earlier height measurement (cm)
• \( Age2 \) — Age at later measurement (years)
• \( Age1 \) — Age at earlier measurement (years)

Explanation: The formula calculates the average growth rate between two measurement points, with PHV representing the maximum growth velocity during the adolescent growth period.

3. Importance of PHV Calculation

Details: Monitoring peak height velocity is crucial for assessing normal growth patterns, identifying growth disorders, and timing interventions for conditions affecting growth and development.

4. Using the Calculator

Tips: Enter both height measurements in centimeters and both age measurements in years. Ensure Age2 is greater than Age1 for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: When does peak height velocity typically occur?
A: PHV usually occurs around age 12-13 in girls and 14-15 in boys, though there is individual variation.

Q2: What is a normal PHV value?
A: Normal PHV values range from 8-12 cm/year in girls and 9-13 cm/year in boys during peak growth periods.

Q3: How frequently should height be measured for PHV calculation?
A: For accurate PHV assessment, height should be measured every 3-6 months during the growth period.

Q4: Are there factors that can affect PHV?
A: Yes, nutrition, genetics, hormonal factors, and overall health can significantly impact peak height velocity.

Q5: Can PHV predict final adult height?
A: While PHV provides information about growth patterns, multiple factors influence final adult height, and PHV alone cannot precisely predict final stature.