Final answer:
According to the central command theory in biology, the fine-tuning of the cardiovascular response to exercise tests is accomplished through feedback loops.
Step-by-step explanation:
According to the central command theory in biology, the fine-tuning of the cardiovascular response to a given exercise test is indeed accomplished via a series of feedback loops. These feedback loops enable the cardiovascular system to regulate heart function precisely, in a process known as cardiac reflexes. Increased physical activity triggers increased rates of firing by proprioreceptors, which are monitored by the cardiac centers in the medulla oblongata. Based on this information, the statement in question is true.