Article Text

Download PDFPDF
Physical exertion at work during pregnancy did not increase risk of preterm delivery or fetal growth restriction

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.

 Q In pregnant working women, does physical exertion at work (standing, lifting, night work, and long hours) increase the risk of preterm delivery or fetal growth restriction?

Clinical impact ratings GP/FP/Primary care ★★★★★★☆ Obstetrics ★★★★★★☆ Paediatrics ★★★★★★☆ Occupational & environmental health ★★★★★★☆


Embedded ImageDesign:

prospective cohort study.

Embedded ImageSetting:

prenatal clinics at 3 hospitals in North Carolina, USA.

Embedded ImageParticipants:

1908 English speaking women ⩾16 years of age who were 24–29 weeks pregnant with a singleton gestation and had worked ⩾28 days in the first 2 trimesters of pregnancy.

Embedded ImageRisk factors:

physical exertion at work during the first (1–12 wk) or second (13–27 wk) trimester, including standing, heavy lifting (>11 kg), regular night work (10:00 PM–7:00 AM), and long hours (exposure determined by telephone interview at 24–31 wk gestation).

Embedded ImageOutcomes:

preterm delivery (<37 wk gestation) and small for gestational age (SGA) infant (birth weight <10th percentile) (evaluated only in Caucasian and African-American …

View Full Text


  • For correspondence: Dr L Pompeii, University of Texas School of Public Health, Houston, TX, USA. lisa.pompeii{at}

  • Sources of funding: March of Dimes Birth Defects Foundation; National Institute of Child Health and Human Development; Centers for Disease Control and Prevention; American Association of Occupational Health Nurses Foundation.