Which skinfold site is not included in Jackson-Pollock 3-site Skinfold Formula (1985) for body density of women?

Correct option is D

The correct answer is (d) The Jackson-Pollock 3-site Skinfold Formula, developed in 1985, is a method used to estimate body density and subsequently body fat percentage in both men and women. This formula is based on skinfold measurements taken at three specific anatomical sites on the body, which are commonly used to represent subcutaneous fat stores.

The s”Infol” site that is not included in the Jackson-Pollock 3-site Skinfold Formula for body density estimation in women is (d) Subscapular.

The three skinfold sites included in the Jackson-Pollock 3-site Skinfold Formula for women are:
1. Triceps: The triceps skinfold is measured on the back of the upper arm, halfway between the shoulder and the elbow. This site is commonly used because it reflects fat accumulation in the upper body and is easily accessible for measurement.

2. Abdominal: The abdominal skinfold is taken just to the side of the umbilicus (belly button), approximately one inch to the side. This site provides an indication of fat accumulation around the abdomen and is associated with visceral adiposity.


3. Suprailiac: The suprailiac skinfold is measured just above the iliac crest (hip bone) at an angle of approximately 45 degrees to the horizontal. This site is commonly used because it reflects fat accumulation in the lower abdomen and hip region.

The omission of the subscapular skinfold in the Jackson-Pollock 3-site Skinfold Formula for women is likely due to several factors, including the desire to minimize measurement variability and the inclusion of sites that provide the most accurate estimation of body density. While the subscapular skinfold is commonly measured in other skinfold formulas and provides valuable information about fat distribution, its exclusion from the JacksonPollock 3-site formula simplifies the measurement process and may improve the formula’s accuracy and reliability.

It's important to note that while the Jackson-Pollock 3-site Skinfold Formula provides a convenient method for estimating body fat percentage, it is not without limitations. Skinfold measurements can be influenced by factors such as hydration status, skin elasticity, and the skill of the measurer. Additionally, the formula’s accuracy may vary depending on the population being studied and the level of adiposity present.

The Jackson-Pollock 3-site Skinfold Formula for body density estimation in women includes skinfold measurements taken at the triceps, abdominal, and suprailiac sites, while omitting the subscapular site. This formula provides a practical and widely used method for estimating body fat percentage, but its limitations should be considered when interpreting results and making clinical or research decisions related to body composition assessment.