What is the normal range for adult heart rate?

The normal range for an adult heart rate is 60 to 100 beats per minute. This range is established based on extensive clinical observations and reflects the average resting heart rate for adults. A resting heart rate within this range indicates that the heart is functioning effectively, delivering an adequate blood supply to the body while maintaining a balance between oxygen demands and supply.

Heart rates lower than 60 beats per minute might indicate bradycardia, which can be a result of various factors including physical fitness levels, certain medications, or underlying health conditions. Conversely, a resting rate above 100 beats per minute is referred to as tachycardia, which can also signify underlying issues requiring medical evaluation.

Thus, the 60-100 beats per minute range is considered healthy for the majority of adults at rest, incorporating the physiological adaptations seen in various populations, including athletes who may have lower resting rates due to their increased cardiovascular fitness.