IRCT201105286618N1 IRCT 2011-07-21 Kermanshah University of Medical Sciences The effect of prenatal preparation for childbirth courses on labor process The effect of prenatal preparation for childbirth courses on pain intensity, second stage duration of labor in primiparous women referred to Motazedi hospital of Kermanshah,2010 2011-04-27 anticipated 136 Complete https://irct.ir/trial/7061 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive. N/A Delivery. Intervention 1: Mothers in experimental group (n=68) will be trained in 8 sessions ( each session last 90 minutes that includs 45 minutes theorical subjects, 15 minutes of discussion and 30 minutes of stretching and breathing exercises and position improving). Tools includ information form and visual analog scale. The collected data will analyze. Pain intensity, second stage duration of labor will be measured in experimental group duringdelivery. Intervention 2: Mothers in control group will just receive routine prenatal care without any intervention. then Pain intensity, second stage duration of labor will be measured in control group during delivery.