prescription for the development and maintenance of fitness in
non–pregnant women consist of activities to improve
cardiorespiratory (aerobic exercise) and musculoskeletal (resistive
exercise) status. Exercise prescription in pregnancy should include the
same elements... activities that promote musculoskeletal fitness are
part of an overall exercise prescription. Typically, these include both
resistance training and flexibility exercises... In one study,
individually prescribed strength training of multiple muscle group was
used as part of an overall conditioning program for pregnant women.
Fetal heart rate were monitored during training at 28 and 38 weeks
gestation, and they remained unchanged. It was concluded that
relatively low weights with multiple repetitions lifted through a
dynamic range of motion appear to be an effective
and safe type of resistance during pregnancy exercise
– R. Artal and M
O’Toole, Guidelines of the American College
of Obstetricians and Gynecologists for Exercise During
Pregnancy and the Postpartum Period.
“Doctors also were concerned that regular exercise could slow
fetal growth because during pregnant workouts, blood tends to be
diverted to the exercising muscles and possibly, away form the uterus.
Most studies have found that pregnant exercise has no effect on birth
weight, and a few studies suggested that moderate exercise may actually
increase birth weight. Recent studies have found that moderate exercise
in early pregnancy improves growth of the placenta.”
– Article published on www.aafp.org
called Exercise for Two.