Mom's Exercise Helps Baby's Heart

Most women should keep active while pregnant, experts say.

ByABC News
May 24, 2009, 12:02 PM

May 25 -- SUNDAY, May 24 (HealthDay News) -- It's natural that a woman might be skeptical about exercising while she's pregnant. So many changes are occurring in her body, it makes sense to have second thoughts about whether exercise might harm her or her unborn child.

But it turns out that a thoughtful exercise program is good for both mother and child, according to medical experts.

"We know that women who exercise during pregnancy have less chance of developing certain conditions like gestational diabetes," said Dr. Raul Artal, chairman of obstetrics, gynecology and women's health for the Saint Louis University School of Medicine. "Not only that, exercise maintains musculoskeletal fitness. Women can cope with the anatomical and physiological changes of pregnancy better when they're in good shape. They also tolerate labor better and recover more quickly from delivery."

The baby also benefits. One study found that when an expectant mother works out, her fetus reaps cardiac benefits in the form of lower fetal heart rates.

The American College of Obstetricians and Gynecologists recommends that pregnant women do at least 30 minutes of moderate exercise a day most days of the week. First, though, all women should consult a doctor to make sure it's OK.

When choosing what sort of exercise to pursue, a woman should take into account the shape she was in before becoming pregnant, said Dr. Thomas Wang, a family practitioner for Kaiser Permanente in San Diego.

"A lot of things depend on the level of fitness they had before," Wang said. A mom-to-be should pursue activities that will provide a good level of exertion without testing the limits of her body's current conditioning. If she's just starting a fitness program to improve her health during pregnancy, she should start out slowly and be careful not to overexert herself.

But there are certain activities that should at least be undertaken with caution, if not avoided altogether. Pregnant women, for instance, should not go scuba diving, as that activity exposes the fetus to a risk of developing decompression sickness, also known as the bends.