What is the term for blood pressure when the heart is relaxed?

The term that describes blood pressure when the heart is relaxed is diastolic. During this phase of the cardiac cycle, the heart muscle is in a state of relaxation, allowing the chambers to fill with blood. Diastolic pressure specifically refers to the lowest level of pressure in the arteries, which occurs when the heart is at rest between beats.

This measurement is significant because it provides insight into the heart's ability to fill with blood and the overall health of the cardiovascular system. A healthy diastolic pressure is crucial for ensuring that the body receives an adequate supply of oxygen-rich blood during periods of rest.

Understanding this concept is essential for fitness instructors, as they should be able to monitor and interpret blood pressure readings as part of an individual's health assessment and training program.