Which of the following statements best describes the basic premise of indirect calorimetry?

Question

Quizplus · Accepted Answer

Indirect calorimetry measures a person's oxygen consumption (VO2) and carbon dioxide production (VCO2) while they are at rest or doing various activities. The basic premise of indirect calorimetry is that energy expenditure is proportional to VO2 and VCO2. This is because when the body uses oxygen to generate energy, it produces carbon dioxide as a waste product. By measuring the difference in oxygen and carbon dioxide levels inhaled versus exhaled, it is possible to calculate energy expenditure. Therefore, choice C is the best statement. Choices A, B, and D are incorrect because they do not accurately describe the premise of indirect calorimetry. Indirect calorimetry measures energy expenditure by calculating the body's oxygen consumption and carbon dioxide production, which are directly linked to the body's energy metabolism. Therefore, option C is the correct statement regarding the basic premise of indirect calorimetry. Option A is incorrect as it reverses the relationship between oxygen and carbon dioxide measurements. Option B is incorrect as it does not address the actual measurement of energy expenditure. Option D is incorrect since indirect calorimetry is considered the gold standard for measuring energy expenditure and is more accurate than predictive equations.

Which of the Following Statements Best Describes the Basic Premise