Symptoms of lead poisoning are varied. They may affect many parts of the body. Most of the time, lead poisoning builds up slowly. It follows repeated exposures to small quantities of lead. Lead toxicity is rare after a single exposure or ingestion of lead.
The new formula for women, based on the new research, is 206 minus 88 percent of age. At age 50, the original formula gives a peak rate of 170 beats per minute for men and women. The new women's formula gives a maximum heart rate of 162 beats for women. Many men and women use their peak heart rate multiplied by 65 to 85 percent to determine their upper heart rate when exercising.
The average maximum heart rate is calculated to be 200 for a 20 year-old and then drop 1 beat per minute for every year over 20 until at age 70, where the average maximum is set at 150 beats per minute. Another way to figure your maximum heart rate is to subtract your age from 220 and use the resulting number.