The BMI is a calculation that takes into account the body weight and height of the person, often used to classify obesity in adults. The result helps to know if the person has a low, normal weight or if on the contrary have more weight. It is important to note that the muscle mass of the fat mass can not be distinguished when the Body Mass Index is calculated, thus not being indicated for athletes and athletes.

It is a new way of assessing adiposity in adults is used as a more reliable alternative to quantify body fat.To calculate the IAC it is necessary to measure hip (hip) and height.