Document Detail

Association between regular exercise and excessive newborn birth weight.
MedLine Citation:
PMID:  19888034     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To estimate the association between regular exercise before and during pregnancy and excessive newborn birth weight. METHODS: Using data from the Norwegian Mother and Child Cohort Study, 36,869 singleton pregnancies lasting at least 37 weeks were included. Information on regular exercise was based on answers from two questionnaires distributed in pregnancy weeks 17 and 30. Linkage to the Medical Birth Registry of Norway provided data on newborn birth weight. The main outcome measure was excessive newborn birth weight, defined as birth weight at or above the 90th percentile. Logistic regression analyses were used to estimate the associations separately for nulliparous (n=16,064) and multiparous (n=20,805) women, and the results are presented as adjusted odds ratios (aORs) with 95% confidence intervals (95% CIs). RESULTS: Excessive newborn birth weight was observed in 4,033 (10.9%) newborns, 56.1% (n=2,263) of whom were born to multiparous women. An inverse association between regular exercise (at least three times per week) and excessive newborn birth weight in pregnancy weeks 17 and 30 was observed in nulliparous women, aOR 0.72 (95% CI 0.56-0.93) and aOR 0.77 (95% CI 0.61-0.96), respectively. Regular exercise performed before pregnancy did not affect the probability of delivering newborns with an excessive birth weight in nulliparous or multiparous women. CONCLUSION: Regular exercise during pregnancy reduces the odds of giving birth to newborns with excessive birth weight by 23-28%.
Katrine Mari Owe; Wenche Nystad; Kari Bø
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Obstetrics and gynecology     Volume:  114     ISSN:  0029-7844     ISO Abbreviation:  Obstet Gynecol     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-11-05     Completed Date:  2009-12-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401101     Medline TA:  Obstet Gynecol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  770-6     Citation Subset:  AIM; IM    
Department of Sport Medicine, Norwegian School of Sport Sciences, Oslo, Norway.
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MeSH Terms
Fetal Macrosomia / prevention & control*
Health Surveys*
Odds Ratio
Prospective Studies
Young Adult
Grant Support
1 U01 NS 047537-01/NS/NINDS NIH HHS; N01-ES-85433/ES/NIEHS NIH HHS

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