The normal heart rate for a 70-year-old woman after moderate intensity exercise is between 75 and 105 beats per minute. The maximum heart rate for a 70-year-old woman is 150 beats per minute.
The CDC provides a simple formula for calculating a person's maximum heart rate and the target heart rates for moderate and intense exercise sessions. First subtract the person's age in years from 220 to find the maximum safe heart rate.
Moderate exercise elevates a person's heart rate to between 50 and 70 percent of that individual's maximum heart rate. Intense exercise is conducted at 85 percent of a person's maximum heart rate.