Cardiovascular Strength to increase cardio and oxygen capacity

Cardiac output is the amount of blood pumped by the heart each minute. Cardiac output is equal to the heart rate multiplied by the stroke volume. Stroke volume is the amount of blood the heart pumps with each beat.

Cardiovascular endurance strength the heart muscle increasing stroke volume. With a greater stroke volume, the heart will beat fewer time to supply oxygen to body cells. Consequently, the resting heart rate is lowered allowing the heart more rest between beats. Athletes generally
have lower heart rate because they have strengthened their heart muscles.

Cardiovascular endurance also increases oxygen capacity. Lungs function with the help of the diaphragm. Cardiovascular endurance strength the diaphragm, which helps the lungs expand and contract. This increases the volume of exchanged air. Consequently, the heart does not have to beat as often to supply the body with oxygen.