What is the safe maximum heart rate for pregnant women when exercising?

The safe maximum heart rate for pregnant women when exercising is considered to be in the range of 140-160 beats per minute. This range is based on the guidelines established by organizations such as the American College of Obstetricians and Gynecologists (ACOG), which emphasize the importance of maintaining a safe and moderate intensity during exercise for the health of both the mother and the developing fetus.

Exercising within this heart rate range helps ensure that the exercise is effective while minimizing risks, as exercise that is too intense can potentially lead to reduced blood flow to the uterus. The 140-160 beats per minute guideline reflects a balance where women can engage in physical activity beneficial for their overall health, support their pregnancy, and maintain fitness without undue stress.

The other ranges provided either fall below or exceed this established guideline, making them less appropriate for safely managing exercise intensity during pregnancy.