title: Physical activity in pregnancy and adverse birth outcomes.
abstract: This study focused on the association between physical activity in the second trimester of pregnancy and adverse perinatal outcomes: low birth weight (LBW), preterm birth (PTB), and intrauterine growth restriction (IUGR). The study used a sample from the BRISA cohort, São Luís, Maranhão State, Brazil, which included women with singleton pregnancy, gestational age from 22 to 25 weeks confirmed by obstetric ultrasound performed at < 20 weeks, and re-interviewed in the first 24 hours postpartum (n = 1,380). Level of physical activity was measured by the International Physical Activity Questionnaire (IPAQ), short version, categorized as high, moderate, and low. A directed acyclic graph (DAG) was used to identify minimum adjustment to control confounding. High physical activity was not associated with LBW (RR = 0.94; 95%CI: 0.54-1.63), PTB (RR = 0.86; 95%CI: 0.48-1.54), or IUGR (RR = 0.80; 95%CI: 0.55-1.15). The results support the hypothesis that physical activity during pregnancy does not result in adverse perinatal outcomes.
authors.affiliation: Universidade Federal do Maranhão, São Luís, Brasil.
authors.forename: Adriana Sousa
authors.initials: AS
authors.lastname: Rêgo
authors.affiliation: Universidade Federal do Maranhão, São Luís, Brasil.
authors.forename: Maria Teresa Seabra Soares de Britto E
authors.initials: MT
authors.lastname: Alves
authors.affiliation: Universidade Federal do Maranhão, São Luís, Brasil.
authors.forename: Rosângela Fernandes Lucena
authors.initials: RF
authors.lastname: Batista
authors.affiliation: Universidade Federal do Maranhão, São Luís, Brasil.
authors.forename: Cecília Claúdia Costa
authors.initials: CC
authors.lastname: Ribeiro
authors.affiliation: Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brasil.
authors.forename: Heloísa
authors.initials: H
authors.lastname: Bettiol
authors.affiliation: Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brasil.
authors.forename: Viviane Cunha
authors.initials: VC
authors.lastname: Cardoso
authors.affiliation: Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brasil.
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Barbieri
authors.affiliation: Universidade Federal do Maranhão, São Luís, Brasil.
authors.forename: Flávia Helen Furtado
authors.initials: FH
authors.lastname: Loureiro
authors.affiliation: Universidade Federal do Maranhão, São Luís, Brasil.
authors.forename: Antonio Augusto Moura da
authors.initials: AA
authors.lastname: Silva
mesh_terms: D000328:Adult; D001938:Brazil / Q000453:epidemiology; D015444:Exercise; D005260:Female; D005317:Fetal Growth Retardation / Q000453:epidemiology* / Q000209:etiology; D005865:Gestational Age; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D011247:Pregnancy; D011256:Pregnancy Outcome; D047928:Premature Birth / Q000453:epidemiology* / Q000209:etiology; D011295:Prenatal Care; D012307:Risk Factors; D012959:Socioeconomic Factors; D055815:Young Adult