Heart rate

Heart rate (HR) is the number of heartbeats per minute, measured in beats per minute (bpm). Stroke volume (SV) is the volume of blood pumped out of the left ventricle with each heartbeat, usually measured in ml per beat. The left ventricle is the chamber that pumps oxygenated blood towards the body.

Heart rate is the number of beats per minute. It can be measured by counting the pulse at the wrist. Stroke volume is the volume of blood pumped out of the left ventricle in one beat.