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Effects of recommended levels of physical activity on pregnancy outcomes

Authors
Journal
American Journal of Obstetrics and Gynecology
0002-9378
Publisher
Elsevier
Publication Date
Volume
202
Issue
3
Identifiers
DOI: 10.1016/j.ajog.2009.10.876
Keywords
  • Delivery
  • Labor
  • Physical Activity
  • Pregnancy Outcome
Disciplines
  • Medicine

Abstract

Objective We sought to examine the relation between recommended levels of physical activity during pregnancy and pregnancy outcomes. Study Design We conducted an observational study with energy expenditure, aerobic fitness, and sleeping heart rate measured in 44 healthy women in late pregnancy. Medical records were examined for pregnancy outcome. Results Active women, who engaged in ≥30 minutes of moderate physical activity per day, had significantly better fitness and lower sleeping heart rate compared to the inactive. Duration of second stage of labor was 88 and 146 minutes in the active vs inactive women, respectively ( P = .05). Crude odds ratio of operative delivery in the inactive vs the active was 3.7 (95% confidence interval, 0.87–16.08). Birthweight, maternal weight gain, and parity adjusted odds ratio was 7.6 (95% confidence interval, 1.23–45.8). Neonatal condition and other obstetric outcomes were similar between groups. Conclusion Active women have better aerobic fitness as compared to inactive women. The risk for operative delivery is lower in active women compared to inactive, when controlled for birthweight, maternal weight gain, and parity. Further studies with larger sample size are required to confirm the association between physical activity and pregnancy outcomes.

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