The respiratory exchange ratio (RER) uses the amount of carbon dioxide produced and the amount of oxygen consumed to determine the percentage of energy derived from carbohydrate and fat.

Question

Quizplus · Accepted Answer

This is correct. The respiratory exchange ratio is often used in exercise physiology to determine the relative contribution of carbohydrate and fat to energy metabolism during exercise. A RER of 1.0 indicates that 100% of the energy comes from carbohydrate, while a RER of 0.7 indicates that 100% of the energy comes from fat.

The Respiratory Exchange Ratio (RER) Uses the Amount of Carbon