Universidad Peruana Cayetano Heredia

Physical Exertion Immediately Before Early Preterm Delivery. A Case-Crossover Study

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dc.contributor.author Chahal, Harpreet S.
dc.contributor.author Gelaye, Bizu
dc.contributor.author Mostofsky, Elizabeth
dc.contributor.author Sanchez, Sixto E.
dc.contributor.author Mere, Juan F.
dc.contributor.author Mercado, Francisco G.
dc.contributor.author Pacora, Percy
dc.contributor.author Williams, Michelle A.
dc.date.accessioned 2019-07-04T17:00:20Z
dc.date.available 2019-07-04T17:00:20Z
dc.date.issued 2019
dc.identifier.uri https://hdl.handle.net/20.500.12866/6879
dc.description.abstract Background: Occupational exertion is associated with a higher risk of preterm delivery, although studies of leisure time activities generally document reduced risks. Less is known about the risk of preterm delivery immediately following episodes of moderate or heavy physical exertion. Methods: We conducted a case-crossover study of 722 women interviewed during their hospital stay for early preterm delivery, defined by a gestational age before 34 weeks, and after 20 weeks. Interviews occurred between March 2013 and December 2015 in seven hospitals in Lima, Peru. Results: The incidence rate ratio (RR) of early preterm delivery was 5.82-fold higher (95% confidence interval [CI] = 4.29, 7.36) in the hour following moderate or heavy physical exertion compared with other times and returned to baseline in the hours thereafter. The RR of early preterm delivery within an hour of physical exertion was lower for exertion at moderate intensity (RR = 2.43; 95% CI = 1.50, 3.96) than at heavy intensity (RR = 23.62; 95% CI = 15.54, 35.91; P-homogeneity < 0.001). The RR of early preterm delivery was lower in the hour following moderate physical exertion among women who habitually engaged in physical exertion >3 times per week in the year before pregnancy (RR = 1.56; 95% CI = 0.81, 3.00) compared with more sedentary women (RR = 6.91; 95% CI = 3.20, 14.92; P-homogeneity = 0.003). Conclusions: Our study showed a heightened risk of early preterm delivery in the hour following moderate or heavy physical exertion. en_US
dc.language.iso eng
dc.publisher Wolters Kluwer Health
dc.relation.ispartofseries Epidemiology
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Case-crossover en_US
dc.subject Physical exertion en_US
dc.subject Preterm delivery en_US
dc.subject Preterm birth en_US
dc.title Physical Exertion Immediately Before Early Preterm Delivery. A Case-Crossover Study en_US
dc.type info:eu-repo/semantics/review
dc.identifier.doi https://doi.org/10.1097/EDE.0000000000001008
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#3.03.09
dc.relation.issn 1531-5487


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