This study was designed as a randomized controlled trial. Based on the power analysis (Cohen's d = 0.80, α = 0.05, power = 80%), a total of 52 pregnant women were included, with 26 participants in the intervention group and 26 in the control group. Pregnant women who met the inclusion criteria and provided written informed consent were randomly assigned to the groups using a computer-generated randomization method.
The intervention group received Nada Yoga music therapy after admission to the delivery room, and the intervention was continued until birth. The therapy consisted of music compatible with the philosophy of Nada Yoga, including relaxing melodies, mantras, and nature sounds, which were delivered via speakers placed in the labor room. The control group received standard obstetric care.
Data were collected using the Pregnant Woman Information Form, Labor Follow-up Form, Visual Analog Scale (VAS), and the Spielberger State Anxiety Inventory.