Which body composition measurement method involves using a caliper?

The method that involves using a caliper for body composition measurement is skin fold measurement. This technique estimates body fat percentage by measuring the thickness of skin folds at specific sites on the body. The caliper applies a measured pressure to the skin fold, allowing a reading of its thickness, which is then used in equations to estimate overall body fat.

Skin fold measurements are practical because they are relatively quick, inexpensive, and can be performed in various settings, making them more accessible compared to some other methods. This approach relies on the principle that subcutaneous fat is a good indicator of overall body fat levels.

In contrast, bioelectrical impedance uses a small electrical current to estimate body composition based on how resistant body tissues are to the flow of electricity. Hydrostatic weighing, also known as underwater weighing, involves measuring a person's mass in air and underwater to assess body density and composition. Lastly, BMI calculation is a simple formula based on height and weight to classify individuals, but it does not directly measure body fat or composition.