1. What is the Jackson-Pollock Formula?

The Jackson-Pollock formula is a widely used method for estimating body fat percentage using skinfold measurements. It provides a reliable and accessible way to assess body composition without expensive equipment.

2. How Does the Calculator Work?

The calculator uses the Jackson-Pollock formula:

Where:

• \( \text{sum of skinfolds} \) — Total measurement from skinfold calipers (mm)
• \( \text{age} \) — Age in years

Explanation: The equation accounts for the relationship between skinfold thickness, age, and body fat percentage, providing a more accurate estimation than simple measurements.

3. Importance of Body Fat Measurement

Details: Accurate body fat measurement is crucial for assessing health risks, monitoring fitness progress, and developing appropriate nutrition and exercise plans.

4. Using the Calculator

Tips: Enter the sum of skinfold measurements in millimeters and age in years. All values must be valid (skinfolds > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: What skinfold sites should be measured?
A: Typically includes chest, abdomen, and thigh for men; triceps, suprailiac, and thigh for women.

Q2: How accurate is the Jackson-Pollock formula?
A: When properly administered by a trained professional, it can provide accuracy within 3-5% of more advanced methods.

Q3: When should skinfold measurements be taken?
A: Ideally in the morning after fasting, and always by the same trained technician for consistency.

Q4: Are there limitations to this method?
A: Less accurate for extremely obese individuals, athletes with very low body fat, and older adults with significant skin elasticity changes.

Q5: How often should body fat be measured?
A: Every 4-8 weeks to track changes effectively, as daily fluctuations can occur due to hydration and other factors.