Objective: Our purpose was to test the null hypothesis that beginning regular, moderate-
intensity exercise in early pregnancy has no effect on fetoplacental growth. Study Design …

The prenatal period now is recognized as a unique physiological window in which maternal
and fetal adaptations can have major consequences for the long-term health and wellbeing …

ABSTRACT In 2002, the American College of Obstetricians and Gynecologists revised their
1994 guidelines to recommend that pregnant women without medical or obstetric …

Background Federal physical activity guidelines recommend at least 150 minutes of
moderate-intensity exercise per week during pregnancy. We studied whether regular …

Objective The purpose of this study was to compare women's levels of physical activity
during early pregnancy and during the year before pregnancy, and to identify characteristics …

Background Preterm birth is the major cause of perinatal mortality in the United States. In the
past, pregnant women have been recommended to not exercise because of presumed risks …

Objective: The purpose of this study was to test the null hypothesis that the volume of
exercise at different times during pregnancy has no effect on fetoplacental growth. Study …

The relationship between physical activity during pregnancy, preterm birth, and gestational
age-adjusted birth weight was investigated prospectively in a cohort of 7101 women. This …

The mental and physical health benefits of exercise during pregnancy highlight the
importance of understanding the determinants of pregnant women's physical activity. This …

The need for guidelines for exercise during pregnancy and the postpartum period was
stimulated during the early 1980s when active women of the “baby boom” generation …