What are the units of measurement for relative VO2?

Relative VO2 is expressed in mL/kg/min, which measures the volume of oxygen consumed per minute relative to body weight. This allows for a comparison of aerobic fitness across individuals of different sizes and weights. By adjusting for body mass, it provides a standard that reflects the efficiency of oxygen use in relation to the individual's mass, making it particularly useful in evaluating performance in sports and exercise science.

Using mL/min would provide the absolute oxygen consumption but does not account for body size or weight differences among individuals. L/min also denotes absolute values and does not reflect individual variations. kg/min focuses on weight but does not relate to oxygen consumption directly. Therefore, mL/kg/min is the most appropriate unit for expressing relative VO2, as it gives a clearer picture of how efficiently an individual utilizes oxygen in relation to their body weight.