In a normal, healthy adult, the resting pulse rate does not change much with age. Age does change the heart's ability to adjust to body activity; however, so it may take longer to get the heart pumping faster or slower during and after exercise. Normal pulse rate varies by person.
A change in resting pulse rate that happens with age can point to a health problem. When the pulse rate slows down, speeds up or does not stay consistent, it may be a sign of a heart condition. The American Heart Association recommends consulting with a doctor when you notice a pulse rate shift.