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Physical activity before and during pregnancy and risk of gestational diabetes mellitus: a meta-analysis

Deirdre K Tobias1, Cuilin Zhang, Rob M van Dam

  • 1Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts, USA. dbanel@hsph.harvard.edu

Diabetes Care
|September 30, 2010
PubMed

Insights

Engaging in regular physical activity before or during early pregnancy significantly lowers the risk of developing gestational diabetes mellitus (GDM). This finding highlights the importance of exercise for maternal health during pregnancy.

Area of Science:

  • Obstetrics and Gynecology
  • Public Health
  • Exercise Science

Background:

  • Gestational diabetes mellitus (GDM) is a common pregnancy complication.
  • GDM increases risks for mothers and offspring, contributing to obesity and diabetes.
  • Physical activity is a potential preventative measure against GDM.

Purpose of the Study:

  • To systematically review and synthesize evidence on physical activity and GDM development.
  • To understand the relationship between exercise and GDM risk.

Main Methods:

  • Searched Medline, EMBASE, and Cochrane Reviews up to March 2010.
  • Included studies on physical activity and subsequent GDM development.
  • Extracted data on study design, GDM criteria, physical activity assessment, and timing of exposure.

Main Results:

  • Included 12 studies (7 prepregnancy, 5 early pregnancy).
  • Higher prepregnancy physical activity showed a pooled odds ratio of 0.45 (95% CI 0.28-0.75) for GDM.
  • Exercise in early pregnancy was also protective, with an odds ratio of 0.76 (95% CI 0.70-0.83).

Conclusions:

  • Increased physical activity before pregnancy is linked to lower GDM risk.
  • Physical activity during early pregnancy also reduces the likelihood of developing GDM.
  • Exercise is a key factor in preventing GDM and mitigating associated health risks.
Abstract

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