Final answer:
Abdominal skinfold measurements evaluate the vertical fold around the abdomen, estimating visceral fat, which is closely linked to health risks due to its location and distribution in the abdominal cavity.
Step-by-step explanation:
In skinfold measurements, the type of fold measured at the abdominal site is typically described as a vertical fold. The abdominal skinfold is taken vertically, about 2 inches to the right of the belly button. This measurement helps estimate the visceral fat level, which is a significant predictor of health risks as it releases hormones and inflammatory factors.
Unlike total body fat, visceral fat's location and distribution within the body, particularly within the abdominal cavity, are more closely related to disease risk. Therefore, abdominal skinfold measurements, along with waist-to-hip ratios, are valuable in assessing the risk for obesity-related diseases, as individuals with excessive abdominal fat or an android shape are at a higher risk than those with a gynoid or 'pear shape.'