The flow of participants through the trial is shown in Figure 1. In total, 249 parturients were screened and 203 were excluded for not meeting the inclusion criteria. Forty-six participants were included in the study and were divided into the experimental group (n = 23) or the control group(n = 23). The characteristics of the participants in each group are presented in Table 1. The groups were similar with regard to demographic details, prenatal preparation, and utcrine dynamics. No participant asked to leave the study before completion.