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Related Experiment Videos

Standing at work and preterm delivery

T B Henriksen1, M Hedegaard, N J Secher

  • 1Department of Obstetrics and Gynaecology, Aarhus University Hospital, Denmark.

British Journal of Obstetrics and Gynaecology
|March 1, 1995
PubMed
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Prolonged standing and walking at work during pregnancy may increase the risk of preterm delivery. These findings support workplace guidelines to protect pregnant women from prolonged physical exertion during the second trimester.

Area of Science:

  • Occupational Health
  • Reproductive Epidemiology
  • Maternal-Fetal Medicine

Background:

  • Current guidelines suggest pregnant women avoid prolonged standing and heavy lifting.
  • Epidemiological evidence on workplace exposures and preterm delivery is inconsistent.

Purpose of the Study:

  • To investigate the association between standing and walking at work in the second trimester and preterm delivery.
  • To evaluate workplace physical exertion in a low-hazard population.

Main Methods:

  • Prospective cohort study of 8711 pregnant women.
  • Data collected at 16 weeks gestation on medical history, lifestyle, and work exposures.
  • Analysis of 4259 women who worked at 16 weeks, with confounder adjustment.

Related Experiment Videos

Main Results:

  • Standing >5 hours/day showed an adjusted odds ratio (OR) of 1.2 for preterm delivery.
  • Walking >5 hours/day showed an adjusted OR of 1.4 for preterm delivery.
  • Combined standing and walking >5 hours/day had an adjusted OR of 3.3 (95% CI 1.4 to 8.0).

Conclusions:

  • Standing and walking at work during the second trimester may increase preterm delivery risk.
  • Findings support workplace guidelines for physical exertion during pregnancy.
  • Further research is needed to elucidate mechanisms linking physical exertion to preterm delivery.