A Level Physics Notes: Medical Physics – The Pulse Rate



The normal pulse rate for humans, while resting, ranges between 60 to 80 beats per minute. In well-conditioned athletes, the pulse rate can also be as low as 60. Athletes have a lower pulse rate because the muscles of their hearts are stronger and can pump more blood with each beat. Immense variations are observed in the heart rate when the individual indulges in different activities. For instance, while sleeping the pulse rate of the individual may drop down to as low as 40 beats per minute, whereas while exercising, it may rise to as high as 150 - 200 beats per minute.

The normal pulse rate for men is approximately 68 to 75 beats per minute, whereas the normal pulse rate for women is approximately 72 to 80 beats per minute. The normal pulse rate for adults, at rest or during some physical activity, depends on their age and weight. For instance, a younger woman will display a higher heart rate than an older woman. Similarly, a woman with more weight will display a higher heart rate compared to her counterpart with less weight.

The normal pulse rate for children varies according to their age. For instance, the normal pulse rate for an infant would range between 100 to 160 beats per minute, whereas the same in toddlers or young children would range between 70 to 120 beats per minute. Older children most often display a pulse rate between 60 to 100 beats per minute.

To take a pulse hold one hand out with the palm up and put the index and middle fingers of the other hand together. Press the pads of your fingers lightly on the underside of your wrist, just at the base of your thumb. Time the number of beats in 15 seconds say and multiple by four to get the number of beats per minute.

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