The following definitions will be useful in understanding the research studies dealing with body composition. Body Composition:
The levels of fat mass and lean body mass which make up the composition of the body. DEXA:
Dual Energy X-ray Absorptiometry - a scientific test using x-ray technology to determine body composition. Fat Mass:
The amount of body which is made up of fat. Often referred to as percent body fat. HYDRO:
Hydrostatic weighing - a method of determining fat mass verses lean mass by weighing an individual underwater. Lean Body Mass:
The amount of body which is made up of muscle, bone, fluids, and internal organs. Often called metabolically active mass or fat free mass. MRI:
Magnetic Resonance Imaging - a scientific test that uses magnetic fields and radio waves to produce colorful images which differentiate between muscle and fat. Resting Metabolic Rate:
The number of calories (i.e., energy required) to sustain the body while at rest. Skinfold:
A test done to measure the subcutaneous fat. Subcutaneous Fat:
Fat stored directly under the skin surface