Physical work load and gestational age at delivery

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      <subfield code="a">To assess the impact of physical activity on the gestational age at delivery in women performing physical tasks in their jobs during pregnancy. Methods: qualified nurses at 15 weeks of pregnancy were asked through a questionnaire to describe the tasks in their regular job, the physical activities involved, and their exposure to other occupational stressors. The physical activities to be identified were walking, standing, lifting, stooping, squatting, and sitting</subfield>
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      <subfield code="t">Occupational and environmental medicine</subfield>
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      <subfield code="g">Vol. 52, nº 5, May 1995 ; p. 313-315</subfield>
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