Stroke Volume (SV) – the amount of blood pumped out of the hearts ventricle each beat.
Heart Rate (HR) – the amount of beats per minute
2. Increased contractility of the heart. The heart beats a little harder thereby decreasing the amount of blood volume left in the ventricle after it contracts.
3. An increase in the plasma volume (PV) of the blood (hypervolemia). With training you can increase the amount of blood in your body by as much as 20%. The Frank Starling Mechanism says that as the PV increases the end diastolic volume (
↑ PV → ↑