Air Displacement Plethysmography

Air Displacement Plethysmography (ADP) is a method used to measure body composition, specifically body fat and lean mass. It works by having a person sit inside a sealed chamber, where the device measures how much air the person's body displaces compared to an empty chamber. From this, it calculates body volume. Combining this with weight, it determines body density, which is used to estimate body fat percentage. ADP is accurate, quick, and does not require assumptions about body shape, making it a reliable tool for assessing body composition in various settings.