The Effect of Cognitive Exercise Therapy Approach and Yoga in Adolescents With Dysmenorrhoea

This study was designed as a prospective, randomised, controlled, parallel group study. G-Power Statistical and Qualitative Data Analysis Software version 3.1.9.2 will be used to estimate the sample size required for the study. Considering that the study consists of a total of three parallel groups (cognitive exercise therapy approach, yoga, control) with measurements taken at three different time points, and given an effect size of Cohen's f = 0.25 and a significance level (α) of 0.05, and power (1-β error level) of 0.80, the total sample size is planned to be 36 cases, with a minimum of 12 cases per group. Considering a potential follow-up loss rate of 20%, it is estimated that at least 42 participants should be included in the study. In similar studies in the literature, the effect size observed in menstrual pain levels is very large. Considering that the effect size may be more moderate in real life and in order to increase the publishability of the research findings, the effect size was set to Cohen's f = 0.25 and the sample size calculation was performed. The 1st intervention group will receive cognitive exercise therapy approach, the 2nd intervention group will receive yoga, and the 3rd control group will consist of people receiving routine medical treatment. In order to fully reveal the effectiveness of the applications, reduce bias, and ensure homogeneity between the training and control groups, the distribution of groups will be determined randomly using a computer program. Yoga and cognitive exercise therapy approach will be applied by a physiotherapist who has training in both fields. Treatments will continue twice a week for 12 weeks. After the initial assessment of the cases, one-to-one, face-to-face trainings will be carried out in the first week (2 sessions) in order to ensure their compliance with the treatment and to fully understand the treatment method. Afterwards, treatments will be carried out synchronously with the patients 2 times a week via the online platform. Evaluations will be carried out 3 times as pre-treatment, 6th week and 12th week. All evaluations will be made face-to-face in the relevant clinic.