Wednesday, January 12, 2011

What is a normal women's heart rate during peak exercise?

During exercise, it is normal for the heart rate to increase. The peak heart rate that you should be able to obtain varies by age. For many years, the formula used for women was the one that was derived for men. In a large study of over 5,000 healthy women, cardiologist Martha Gulati, MD, of Northwestern University has found that women—when it comes to physiology—are not the same as men. "Women are not small men," Gulati states. "There is a gender difference in exercise capacity a woman can achieve. Different physiologic responses can occur. " The old formula for peak heart rated -- 220 minus age -- is based on data obtained from men. The new formula for women is 206 minus 88 percent of age. At age 50, the old formula would give a peak rate of 170 beats per minute women (and men). The new formula for women would result in an estimated maximum heart rate of 162 beats for women.

This new formula published in 2010 in the heart journal Circulation is important for women. First, many women and trainers use the calculated peak heart rate for a certain age and multiply it by 65 to 85 percent to determine the rate heart that they want to target during exercise. In addition, with the new formula, physicians will more accurately determine if women are having a normal or abnormal response to exercise. "If it's abnormal, that's a marker for a higher risk of death," Gulati said.

Find out more about our Women's Heart Program