Studies reported varying results with regard to labor-and-delivery-related outcomes. For example, 1 prospective, observational study of 131 healthy, low-risk, fit women compared those who continued to exercise at >50% of maximum capacity for at least 30 minutes, 3 times a week, for during the latter half of pregnancy to those who stopped exercising during pregnancy. The study found that women who continued to exercise during pregnancy needed fewer epidurals and had more vaginal deliveries , fewer forceps deliveries and fewer cesarean sections. In addition, these women had a shorter active phase of labor and fewer episiotomies. In contrast, another prospective, observational study of 750 military women on active duty compared those who exercised during pregnancy required more inductions of labor and had a longer first stage of labor but showed no difference in mode of delivery, second or third stage of labor, or epidural use.