Final answer:
The correct units for absolute VO2 are kcal/LO2, which stands for kilocalories per liter of oxygen.
Step-by-step explanation:
Absolute VO2 refers to the absolute amount of oxygen consumption, which is measured in liters of oxygen per unit of time. The correct units for absolute VO2 are kcal/LO2, which stands for kilocalories per liter of oxygen. This unit is used to express the amount of energy produced when 1 liter of oxygen is utilized in the oxidation of organic nutrients. For example, if a person's absolute VO2 is 2.5 L/min, it means that they are consuming 2.5 kilocalories of energy for every liter of oxygen they use.