The Respiratory Exchange Ratio (RER) gives an indication of ____.
A) absolute fat oxidation
B) relative fat oxidation
C) the lactate threshold
D) protein (amino acid) oxidation

Question

Quizplus · Accepted Answer

The Respiratory Exchange Ratio (RER) gives an indication of the relative fat oxidation compared to carbohydrate oxidation during exercise. RER measures the ratio of carbon dioxide produced to oxygen consumed and provides insight into whether the body is using more carbohydrates or fats as fuel during exercise. An RER of 1.0 indicates that the body is primarily using carbohydrates for fuel, while an RER of 0.7 indicates that the body is primarily using fats for fuel. Therefore, the best choice is B) relative fat oxidation.

The Respiratory Exchange Ratio (RER) Gives an Indication of ____