Occupational and environmental medicine
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Review Meta Analysis
Risk of prematurity, low birthweight and pre-eclampsia in relation to working hours and physical activities: a systematic review.
Occupational activities are suspected of having an adverse impact on outcomes of pregnancy. ⋯ The balance of evidence is not sufficiently compelling to justify mandatory restrictions on any of the activities considered in this review. However, given some uncertainties in the evidence base and the apparent absence of important beneficial effects, it may be prudent to advise against long working hours, prolonged standing and heavy physical work, particularly late in pregnancy. Our review identifies several priorities for future investigation.