A Medically Supervised Pregnancy Exercise Intervention in Obese Women: A Randomized Controlled Trial

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine
• Exercise Physiology

Background:

• Obesity in pregnancy is associated with adverse maternal and fetal outcomes.
• Gestational diabetes mellitus and excessive gestational weight gain are common complications.
• Medically supervised exercise interventions are being explored to mitigate these risks.

Purpose of the Study:

• To evaluate the effectiveness of a medically supervised exercise intervention in improving maternal glycemia and gestational weight gain in obese pregnant women.
• To compare the outcomes of the exercise intervention against routine prenatal care.

Main Methods:

• A randomized controlled trial involving 88 obese pregnant women.
• Intervention group: 50-60 minute medically supervised exercise sessions 3 times per week.
• Control group: Routine prenatal care.
• Primary outcome: Reduction in fasting plasma glucose at 24-28 weeks gestation.
• Secondary outcome: Excessive gestational weight gain at 36 weeks gestation.

Main Results:

• No significant difference in mean fasting plasma glucose or gestational diabetes mellitus incidence between groups.
• Significantly lower incidence of excessive gestational weight gain in the exercise group (23.5%) compared to the control group (45.2%) at 36 weeks gestation (P<.05).

Conclusions:

• An intensive, medically supervised exercise intervention did not improve maternal glycemia in obese pregnant women.
• Exercise intervention effectively attenuated excessive gestational weight gain in this population.
• Obese pregnant women should be advised to exercise to manage gestational weight gain.