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A pilot walking program promotes moderate-intensity physical activity during pregnancy.

Kai Ling Kong1, Christina G Campbell, Randal C Foster

  • 11Department of Food Science and Human Nutrition, Iowa State University, Ames, IA; 2Interdepartmental Graduate Program in Nutritional Sciences, Iowa State University, Ames, IA; 3Department of Statistics, Iowa State University, Ames, IA; and 4Department of Kinesiology, Iowa State University, Ames, IA.

Medicine and Science in Sports and Exercise
|September 5, 2013
PubMed
Summary

This study found that an unsupervised walking program successfully increased moderate-intensity physical activity (MPA) in overweight and obese pregnant women. The intervention showed positive trends in maternal and birth outcomes, highlighting walking as a viable strategy for this population.

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Area of Science:

  • Obstetrics and Gynecology
  • Public Health
  • Exercise Science

Background:

  • Walking is a practical method for enhancing moderate-intensity physical activity (MPA) during pregnancy.
  • Overweight and obese pregnant women often face challenges in meeting physical activity recommendations.

Purpose of the Study:

  • To implement and assess a walking intervention aimed at increasing MPA in overweight and obese pregnant women.
  • To evaluate the intervention's impact on maternal and birth outcomes.

Main Methods:

  • A randomized controlled trial involving 37 overweight or obese pregnant women assigned to a walking intervention or control group.
  • Objective physical activity (PA) was measured using the StepWatch™ Activity Monitor across four gestational periods.
  • Moderate-intensity physical activity (MPA) was defined as ≥ 80 steps/minute, with "meaningful walking" in ≥ 8-minute bouts.

Main Results:

  • The walking intervention group demonstrated significantly higher MPA levels compared to the control group during mid-to-late pregnancy.
  • Participants in the intervention group showed a significant increase in "meaningful walks" throughout the study.
  • Trends indicated more favorable maternal and birth outcomes in the intervention group, with gestational weight gain associated with preceding rates.

Conclusions:

  • A pilot, unsupervised walking intervention effectively boosted MPA in overweight and obese pregnant women.
  • Walking represents a feasible and potentially beneficial strategy for improving health during pregnancy for this demographic.