Effect of Motivational Interviewing and Digital Support on Premenstrual Symptoms and Emotion Regulation

This randomized controlled study aims to evaluate the impact of a intervention program on premenstrual syndrome (PMS) symptoms and emotion regulation among female university students in Türkiye. The program includes motivational interviewing and mobile-based support strategies. Participants are selected from nursing students at Erzurum Technical University, based on a set of inclusion criteria such as age, menstrual cycle regularity, and the presence of PMS symptoms above a defined threshold. Individuals with chronic gynecological conditions or recent psychiatric diagnoses are excluded. The minimum required sample size (n = 68) was calculated using G\*Power software based on an effect size of 0.76 from Nam and Cha (2019), with α = 0.05 and power = 0.80. To account for potential dropouts and ensure balanced group allocation, a total of 70 eligible participants were recruited and randomly assigned to either the intervention (n = 35) or control (n = 35) group. Data collection tools include the Premenstrual Syndrome Scale (PMSS), the Difficulties in Emotion Regulation Scale - Short Form (DERS-16), and a demographic information form. Ethical approval was obtained from the Ethics Committee of Erzurum Technical University (Decision No: 05/16 - Date: 27.03.2025). Written informed consent was obtained from all participants. The study does not involve the use of any drugs or medical devices.