Relationship between Pre-Pregnancy Body Mass Index, Physical Activity and Sedentary Lifestyles Before and During Pregnancy: A Cross-Sectional Study

Introduction: Pregnant women are recommended to participate in ‘moderate to vigorous’ physical activity (MVPA), each day, to promote and maintain health. The aim of this study was to assess the changes in Total Energy Expenditure (TEE), MVPA, physical activity levels in four different domains (leisure time, transportation, household/ caregiver, occupational), time spent watching TV, and numbers of women meeting the recommendations, before compared with during pregnancy, by body mass index category. Method: A systematic sample of otherwise healthy pregnant women attending their scheduled 20-22nd week assessment at a hospital in Spain during a 4 year period, 2004-2007, were asked for information on socio-demographic and medical information. They completed the Paffenbarger questionnaire and provided an estimate of their height and weight, both during the first half of their pregnancy and during the 12 months prior to their pregnancy. Results: 1.175 women agreed to take part. TEE decreased from pre-pregnancy in all BMI categories (21.77 to 18.89 in ideal; 24.20 to 21.56 in overweight; and 23.82 to 21.21 in obese women) (p