Final answer:
A VO2 max test measures the cardiovascular and muscular systems by evaluating the maximum amount of oxygen used during intense physical activity.
Step-by-step explanation:
The VO2 max test is designed to measure the maximum amount of oxygen that an individual can utilize during intense exercise, which reflects the aerobic physical fitness of the person. It primarily evaluates the performance of two systems: the cardiovascular and respiratory systems.
These systems work together to transport oxygen to the muscles, where it is critical for aerobic respiration and energy production during exercise. The cardiovascular system, including the heart, blood vessels, and blood, transports materials like oxygen to all cells in the body. On the other hand, the respiratory system exchanges gases between the blood and outside air, and supplies oxygen to be carried to cells throughout the body by the cardiovascular system.
Therefore, the answer to the question "What systems are measured by a VO2 max test?" is a) Cardiovascular and muscular systems.