What is the term for a heart rate that is below 60 bpm?

A heart rate that is below 60 beats per minute is specifically referred to as bradycardia. This condition indicates a slower than normal heartbeat, which can be a result of various factors including high levels of physical fitness, certain medications, or underlying health conditions. In well-trained athletes, bradycardia can be common and may not necessarily signify a health issue, as their cardiovascular systems are more efficient at pumping blood.

Understanding bradycardia is essential as it relates to the body's ability to meet its oxygen demands. When the heart rate drops below the normal resting range (typically considered to be from about 60 to 100 bpm), it can affect blood flow to the organs and tissues, potentially leading to symptoms such as fatigue, dizziness, or fainting if the rate becomes too low.

The other terms mentioned do not accurately describe a heart rate below 60 bpm. Tachycardia refers to a heart rate that exceeds 100 bpm, normalcy refers to a standard or typical state which does not specifically identify heart rates, and arrhythmia denotes an irregular heartbeat that may be too fast, too slow, or uncoordinated. Understanding the significance of bradycardia is crucial for assessing cardiovascular health and fitness levels