Final answer:
Aerobic training leads to various fitness adaptations in blood, which are beneficial for overall health. Hematocrit is a measure of the percentage of red blood cells in the total blood volume.
Step-by-step explanation:
Aerobic training leads to various fitness adaptations in blood, which are beneficial for overall health. One major adaptation is an increase in red blood cell count and hemoglobin concentration.
This helps improve oxygen-carrying capacity and delivery to the muscles during exercise. Another adaptation is an increase in capillary density, which enhances nutrient and oxygen exchange between the blood and tissues. Additionally, aerobic training can lower blood pressure and improve cardiovascular function.
Hematocrit is a measure of the percentage of red blood cells in the total blood volume. It represents the packed cell volume after a blood sample has been centrifuged. Hematocrit levels can indicate changes in blood viscosity and oxygen-carrying capacity.