Tag: Carbohydrate oxidation

A normal resting respiratory exchange ratio (RER) for an individual on a mixed diet is approximately 0.8, reflecting a balance of fat and carbohydrate metabolism. The value of what is a normal respiratory exchange ratio is not static and changes dynamically based on activity intensity, diet, and metabolic state.

According to sports science, the respiratory exchange ratio (RER) is a crucial physiological measurement that reveals your body's metabolic efficiency. This guide explains how to calculate your RER, offering a window into how your body uses carbohydrates and fats for energy.

During exercise, the body's use of fuel shifts towards carbohydrates as intensity increases, but the idea that carbs are 'highly oxidized' requires a deeper look into the complexities of human metabolism. Understanding how and when carbohydrates are burned for energy is crucial for managing health and performance, distinguishing between rapid usage and preferential oxidation.

An RER value of 1.0 indicates that your body is burning 100% carbohydrates for fuel, whereas an RER of 0.7 indicates 100% fat utilization. Understanding the difference between the RER for fat vs carbs is crucial for interpreting metabolic data and optimizing exercise and nutrition strategies.