Skinfold assessments are classified under which component model?

Skinfold assessments are classified as a two-component model because they essentially evaluate body composition based solely on two main components: fat mass and fat-free mass. This model simplifies the body's composition into these two distinct categories, allowing for an estimation of body fat percentage by measuring skinfold thickness at various sites on the body.

The two-component model effectively addresses the relationship between subcutaneous fat and total body fat, providing a straightforward way to assess body composition without requiring complex methodologies. This contrasts with models that may divide body composition into additional categories, such as hydration status or bone mass, which typically fall under multi-component or three-component classifications. Therefore, the emphasis on just fat and fat-free mass in skinfold assessments aligns perfectly with the characteristics of a two-component model.