Measuring metabolic rate
The sum of all metabolic reactions in the body can be measured as a function of oxygen consumption, carbon dioxide production and heat production. Oxygen is needed in aerobic respiration, carbon dioxide is a byproduct of respiration, while heat is lost energy by many reactions.
The higher these variables, the higher the metabolic rate is. Due to the big range of metabolic rates between organisms at rest versus active, for comparison purposes the resting metabolic rate is obtained.
There is a positive correlation between the volume of oxygen used per hour and the…