1. What is the Jackson-Pollock 3-Site Skinfold Method?

The Jackson-Pollock 3-site skinfold method is a validated technique for estimating body fat percentage in women. It measures skinfold thickness at three specific sites (triceps, suprailiac, and thigh) to calculate body density, which is then converted to body fat percentage.

2. How Does the Calculator Work?

The calculator uses the Jackson-Pollock formula:

Where:

• \( triceps \) — Triceps skinfold measurement (mm)
• \( suprailiac \) — Suprailiac skinfold measurement (mm)
• \( thigh \) — Thigh skinfold measurement (mm)
• \( age \) — Age in years

Explanation: The equation accounts for the relationship between subcutaneous fat and total body fat, with age as a modifying factor.

3. Importance of Body Fat Measurement

Details: Accurate body fat measurement is crucial for health assessment, fitness tracking, and designing appropriate nutrition and exercise programs.

4. Using the Calculator

Tips: Enter skinfold measurements in millimeters and age in years. All values must be valid (skinfold measurements > 0, age between 18-100). For accurate results, measurements should be taken by a trained professional.

5. Frequently Asked Questions (FAQ)

Q1: Who developed this method?
A: The Jackson-Pollock skinfold method was developed by Dr. Andrew Jackson and Dr. Michael Pollock in the 1970s.

Q2: What are normal body fat percentages for women?
A: For women, essential fat is 10-13%, athletes 14-20%, fitness 21-24%, and average 25-31%. Over 32% is considered obese.

Q3: How accurate is this method?
A: When performed by a trained professional, skinfold measurements can be within 3-4% of more advanced methods like DEXA scans.

Q4: When should measurements be taken?
A: Ideally in the morning before eating or exercising, and consistently at the same time of day for tracking changes.

Q5: Are there limitations to this method?
A: Less accurate for extremely obese individuals, elderly populations, and those with significant edema or dehydration.