Which one of the following is the preferred approach for determining energy expenditure in free-living research subjects?

Question

Quizplus · Accepted Answer

Doubly labeled water is the preferred approach for determining energy expenditure in free-living research subjects as it is a non-invasive and accurate method that does not require direct measurement of oxygen consumption or carbon dioxide production. It involves administering a dose of water with a known amount of isotopes and then measuring the difference in the isotopes in subsequent urine samples, which allows for calculation of energy expenditure over a period of time. The other options listed (Harris-Benedict equations, closed circuit calorimetry, and using a computerized metabolic cart) are all useful methods for determining energy expenditure but may not be ideal for free-living subjects due to their invasiveness, expense, or lack of portability.

Which One of the Following Is the Preferred Approach for Determining