Physical activities (exercises or choreses) during pregnancy and mode of delivery in nulliparous women: A prospective cohort study

Objective: The aim of this study was to investigate changes in physical activities during pregnancy and the relationship between physical activity and unplanned caesarean sections (CSs). Materials and methods: A cohort study design was carried out. A cohort of 2029 pregnant women was established when they received prenatal care at 18–22 weeks of gestation in a medical center in southwest Iran. Participants were asked to recall their levels of physical activity during pre-pregnancy. The data were processed using Statistics/Data Analysis. To compare activities the chi-square was used to identify significant differences between the groups. A multiple logistic regressian was used to identify the association between activities and delivery mode as well as controlling potential confounding variables. In the analyses, the level of significance was set at P