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Physical activity and excess weight in pregnancy have independent and unique effects on delivery and perinatal outcomes

Morgan, Kelly, Rahman, M. A., Hill, R. A., Zhou, S. M., Bijlsma, G., Khanom, A., Lyons, R. A. and Brophy, S. T. 2014. Physical activity and excess weight in pregnancy have independent and unique effects on delivery and perinatal outcomes. Plos One 9 (4) , e94532. 10.1371/journal.pone.0094532

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Abstract

Background This study examines the effect of low daily physical activity levels and overweight/obesity in pregnancy on delivery and perinatal outcomes. Methods A prospective cohort study combining manually collected postnatal notes with anonymised data linkage. A total of 466 women sampled from the Growing Up in Wales: Environments for Healthy Living study. Women completed a questionnaire and were included in the study if they had an available Body mass index (BMI) (collected at 12 weeks gestation from antenatal records) and/or a physical activity score during pregnancy (7-day Actigraph reading). The full statistical model included the following potential confounding factors: maternal age, parity and smoking status. Main outcome measures included induction rates, duration of labour, mode of delivery, infant health and duration of hospital stay. Findings Mothers with lower physical activity levels were more likely to have an instrumental delivery (including forceps, ventouse and elective and emergency caesarean) in comparison to mothers with higher activity levels (adjusted OR:1.72(95%CI: 1.05 to 2.9)). Overweight/obese mothers were more likely to require an induction (adjusted OR:1.93 (95%CI 1.14 to 3.26), have a macrosomic baby (adjusted OR:1.96 (95%CI 1.08 to 3.56) and a longer hospital stay after delivery (adjusted OR:2.69 (95%CI 1.11 to 6.47). Conclusions The type of delivery was associated with maternal physical activity level and not BMI. Perinatal outcomes (large for gestational age only) were determined by maternal BMI.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Development and Evaluation of Complex Interventions for Public Health Improvement (DECIPHer)
Social Sciences (Includes Criminology and Education)
Publisher: Public Library of Science
ISSN: 1932-6203
Date of First Compliant Deposit: 30 March 2016
Date of Acceptance: 18 March 2014
Last Modified: 20 Feb 2019 15:23
URI: http://orca.cf.ac.uk/id/eprint/73455

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