Prepregnancy body mass index and resting metabolic rate during pregnancy.

Aim: The resting metabolic rate (RMR) varies among pregnant women. The factors responsible for this variability are unknown. This study aimed to assess the influence of the prepregnancy body mass index (BMI) on the RMR during late pregnancy.

Effects of recommended levels of physical activity on pregnancy outcomes.

Objective: We sought to examine the relation between recommended levels of physical activity during pregnancy and pregnancy outcomes.

Study Design: We conducted an observational study with energy expenditure, aerobic fitness, and sleeping heart rate measured in 44 healthy women in late pregnancy. Medical records were examined for pregnancy outcome.