Indirect calorimetry works based on the principle that ____.
A) a rise in body temperature reflects the amount of energy expended
B) the amount of heat produced is proportional to the energy expended
C) oxygen consumption and carbon dioxide production are related to energy expenditure
D) energy expenditure can be predicted if respiration and perspiration are carefully measured

Question

Quizplus · Accepted Answer

Indirect calorimetry measures the oxygen consumption and carbon dioxide production, as they are related to energy expenditure. This is because the body breaks down macronutrients (carbohydrates, fats, and proteins) into energy through aerobic metabolism, which requires oxygen and produces carbon dioxide as a waste product. Therefore, the amount of oxygen consumed and carbon dioxide produced can be used to calculate the body's energy expenditure.

Indirect Calorimetry Works Based on the Principle That ____