Answer: Dual energy x-ray absorptiometry
Step-by-step explanation:
In physical fitness, the body composition represents the percentage of bone, water, fat and muscle concentration in the human body. Due to the fact that the muscle tissues that up less space in the body as compared to the fat tissues the weight as well as body composition determines the leanness of a person.
Dual energy X-ray absorptiometry is a technique which is used increasingly for many clinical and research applications. This technique gives accurate information about the measurement of composition of body, bone mineral density, lean tissue mass, fat tissue mass, and the fractional contribution of fat.