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    Roger W. Harms, M.D.

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Question

Exercise during pregnancy: Is heart rate a concern?

I exercise regularly on my own and also teach water aerobics. Now that I'm pregnant, do I need to limit my heart rate while I exercise?

Answer

from Roger W. Harms, M.D.

If you exercised regularly before your pregnancy, don't be too concerned about your heart rate during pregnancy.

In the past, the American College of Obstetricians and Gynecologists (ACOG) recommended a heart rate of no more than 140 beats a minute for exercise during pregnancy. Today, however, the ACOG recommends 30 minutes of exercise a day during pregnancy for most women without any specific heart rate limits.

Still, reasonable precautions for exercise during pregnancy are important. Get your health care provider's OK for any exercise during pregnancy — especially if you have a history of preterm labor or certain medical conditions, such as diabetes or high blood pressure. Also be careful to pace yourself appropriately. In general, you should be able to carry on a conversation while you're exercising. If you can't speak normally while you're working out, you're probably pushing yourself too hard. This could lead to overheating, dehydration or other problems.

Next question
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References
  1. Common concerns: Exercise. National Toxicology Program. http://cerhr.niehs.nih.gov/common/exercise.html. Accessed April 22, 2009.
  2. Exercise during pregnancy. The American College of Obstetricians and Gynecologists. http://www.acog.org/publications/patient_education/bp119.cfm. Accessed April 22, 2009.

AN01560

Aug. 1, 2009

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