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Jackson-Pollock 3-Site Formula (Female):
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Skinfold calipers body fat measurement is a method of estimating body fat percentage by measuring the thickness of skinfolds at specific sites on the body. The Jackson-Pollock 3-site formula is commonly used for females to calculate body density and subsequently body fat percentage.
The calculator uses the Jackson-Pollock formula for females:
Where:
Explanation: The equation calculates body density from skinfold measurements and age, then converts it to body fat percentage using the Siri equation.
Details: Body fat percentage is a more accurate indicator of health and fitness than body weight alone. It helps assess health risks, track fitness progress, and guide nutrition and exercise plans.
Tips: Enter the sum of skinfold measurements in millimeters and age in years. Ensure measurements are taken accurately at the triceps, suprailiac, and thigh sites for females using proper caliper technique.
Q1: What are the standard skinfold measurement sites for females?
A: For the Jackson-Pollock 3-site formula, measure at the triceps, suprailiac, and thigh sites.
Q2: How accurate is the skinfold method?
A: When performed by a trained professional, skinfold measurements can be within 3-4% accuracy compared to more advanced methods like DEXA scans.
Q3: What is a healthy body fat percentage for women?
A: For women aged 20-39, 21-33% is considered healthy; for ages 40-59, 23-34%; for ages 60-79, 24-36%.
Q4: How often should I measure my body fat?
A: Every 4-8 weeks is sufficient to track changes, as body fat changes slowly over time.
Q5: Are there limitations to this method?
A: Accuracy can be affected by the skill of the measurer, hydration status, and individual variations in fat distribution.