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Related Experiment Videos

Maternal preconceptional weight and gestational length.

Pura Rayco-Solon1, Anthony J Fulford, Andrew M Prentice

  • 1MRC Keneba, Medical Research Council Laboratories, The Gambia, Banjul, West Africa.

American Journal of Obstetrics and Gynecology
|April 23, 2005
PubMed
Summary
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Preconceptional undernutrition, linked to lower body weight during the rainy season, was found to shorten pregnancy duration in rural Gambian women. This suggests maternal energy balance impacts gestation length.

Area of Science:

  • Reproductive health
  • Maternal nutrition
  • Human gestation

Background:

  • Animal studies indicate preconceptional undernutrition can shorten gestation.
  • Human populations with seasonal food availability provide a model to test this hypothesis.
  • Rural Gambian women experience annual energy balance fluctuations due to the rainy season.

Purpose of the Study:

  • To investigate the effect of preconceptional nutritional status on human gestation length.
  • To determine if seasonal variations in maternal energy balance influence pregnancy duration in The Gambia.

Main Methods:

  • Retrospective analysis of records from 1918 infants born to rural Gambian women.
  • Comparison of gestation lengths for pregnancies conceived during months of lowest maternal weight (September-November) versus other months.

Related Experiment Videos

  • Statistical analysis using log-rank chi-squared test to assess significance.

    • Main Results:

    • Pregnancies conceived during September to November were significantly shorter (38.6 weeks) compared to those conceived in better-fed months (39.0 weeks).
    • The observed difference in gestation length was statistically significant (log-rank chi 2 = 17.4, P < .0001).

    Conclusions:

    • Preconceptional undernutrition, indicated by lower maternal weight during the rainy season, is associated with shorter gestation periods in this population.
    • Maternal energy balance around conception plays a role in regulating human pregnancy duration.