What is the normal adult pulse range?

• A. 50-90 beats per minute
• B. 70-100 beats per minute
• C. 60-100 beats per minute
• D. 40-80 beats per minute

Answer: (C)

The main idea is the resting heart rate range for an adult. At rest, a normal adult pulse is roughly sixty to one hundred beats per minute. This reflects the balance between the parasympathetic and sympathetic control of the heart and allows for natural variation among individuals.

Why this range is best: it encompasses the typical variability seen in healthy adults, including athletes who may run a lower resting rate and people who are transiently higher due to factors like recent activity or mild stress. If the rate is consistently below sixty or above one hundred, it warrants attention, because those ends of the spectrum can indicate bradycardia or tachycardia, respectively, which may have clinical causes.

Other ranges are less accurate because they would misclassify a significant portion of healthy adults. A range that ends below one hundred would exclude normal high resting rates, and a range that starts below sixty would label many normal, well-conditioned individuals as abnormal. Therefore, the standard reference for the normal adult resting pulse is about sixty to one hundred beats per minute.