What is the unit of measurement for Relative Oxygen Uptake?

Relative Oxygen Uptake is a measure commonly used in exercise physiology to assess an individual's aerobic fitness level relative to their body mass. Specifically, it is typically expressed in milliliters of oxygen consumed per kilogram of body weight per minute (mL/kg/min).

This unit of measurement allows for comparisons between individuals of different sizes, making it a practical way to evaluate cardiovascular efficiency and performance across a diverse population. By accounting for body weight, relative oxygen uptake provides a more standardized value that reflects the capacity for aerobic metabolism concerning the individual's mass, rather than giving an absolute measure of oxygen consumption that could misrepresent an athlete’s performance due to size differences.

The other options do not appropriately represent the relative measurement in relation to body weight, thus making them unsuitable for reporting Relative Oxygen Uptake in exercise and fitness contexts.