Term
|
Definition
| having too little body fat to maintain health, causing a person to have a weight that is below an acceptable defined standard for a given height. |
|
|
Term
|
Definition
| having a moderate amount of excess body fat, resulting in a person having a weight that is greater than some accepted standard for a given height but is not considered obese. |
|
|
Term
|
Definition
| having excess body fat that adversely affects health, resulting in a person having a weight that is substantially greater than some accepted standard for a given height. |
|
|
Term
|
Definition
Body Mass Index ( Quetelet's index) is a commonly used index representing the ratio of a person's body weight to the square of his or her height.
BMI=weight(kg)/ height (m)2 |
|
|
Term
|
Definition
| It provides an important clue to your overall health. Studies show that a person's risk for type 2 diabetes, igh blood pressure, heart dissease and other diseases largely increases when their BMI is at or above a value of 30 kg/m2. Having a very low BMI is considered a value below 18.5 kg/m2. |
|
|
Term
| Conversion of weight and height |
|
Definition
to convert pounds to kg = divide by 2.2
(there are 2.2 pounds per kg)
convert hight to inches (12 inches per foot)
convert inches to metres = x 0.0254
(0.0254 metres per inch) |
|
|
Term
| Underwater Weighing Method |
|
Definition
| A technician submerges a person underwater, while the person exhales fully while underwater. Used mostly or research purposes, and considered one of the most accurate. Can estimate body fat within a 2% to 3% margin of error. (Test does not work well for obese people) |
|
|
Term
|
Definition
| Involves pinching a person's fold of skin with it's underlying layer of fat at various locations of the body. Fold is measures by using a specially designed caliper. Cannot be used with obese people b.cus their skinfolds are to large. It is possible that this method will soon be useless for more than half of the pop. due to obesity. Major challenge=technician must predict a person's body fat by using one of more than 400 equations, and is only accurate if the correct equation is applied. when preformed by a skilled tech can be error of 3% to 4%. |
|
|
