What heart rate range is associated with middle adulthood?

The heart rate range of 55-105 beats per minute (bpm) is consistent with the physiological changes that occur during middle adulthood. During this life stage, individuals often experience a slight decline in resting heart rate compared to younger ages due to increased cardiovascular efficiency and changes in overall metabolism.

A heart rate on the lower end of this range indicates better cardiovascular fitness, which is often achieved through regular physical activity, a balanced diet, and a healthy lifestyle. Additionally, factors such as a decrease in maximum heart rate with age contribute to this adjusted range. This physiological understanding reflects why the selected range serves as an appropriate benchmark for assessing heart rate parameters specifically in middle adulthood.