Here, Greer offers advice for pregnant runners.

“According to the American College of Sports Medicine, most healthy pregnant women would benefit from at least 30 minutes of moderate activity on most but not all days of the week. Female pregnant runners often inquire what the recommended guidelines with respect to safe exercise are during pregnancy.

“Most women who were active before pregnancy and have a strong background in running should continue to exercise. The type and intensity of exercise should be based on previous history, health and comfort.

“It's suggested that early in a pregnancy, many women can continue to train at moderate intensities. As the pregnancy continues, running intensity usually decreases naturally and the type, duration and intensity of exercise are sometimes modified with comfort and safety as guidelines.

“According to ACSM the following important safety concerns should be followed when exercising during pregnancy:

1. Avoid exercise for extended periods in a supine position after the first trimester.

2. Take steps to avoid heat injury.

3. Avoid extremes in barometric pressure, so avoid scuba diving and exercising at altitudes of more than 6,000 feet.

4. Limit the possibility of falling and impact injury.

“Sedentary women who are not used to exercising before being pregnant should consult with their doctors. However, these women can safely engage in low intensity exercise. For these women, walking is typically recommended for exercise and should be done at moderate speeds.”

– DON NORCROSS