The ability to perform prolonged, large muscle, dynamic exercise at moderate to high intensity
Ability to take in, transport, and utilize oxygen
What does VO2 max indicate?
Higher fitness, which lowers the relative risk of death
How many kcal a week should you expend?
As exercise begins breathing increases in direct proportion to the intensity and metabolic needs of exercise. A fit person has a slower resting breathing rate than an unfit person, and will recover more quickly after exercise
An increase in blood volume (10-15%), specifically plasma volume is one of the first adaptations to training. Greater filling of the heart between beats results in a greater volume of blood being ejected. The same cardiac output can be achieved at a lower HR. As plasma volume increases, hematocrit decreases, resulting in more red blood cells being created, increasing O2 carry capacity