Participants in the control group were advised to relax by themselves in their routine life and to move away from stressful living conditions. No supervised exercises or follow-up procedures were provided for the control group. The participants were aware that they could participate in PRE programs for 6 weeks, if the study provide beneficial effects after intervention.
The SPSS software (Copyright ©SPSS Version 26) was used for statistical evaluation. The mean [95% confidence intervals (CI)], standard deviations, and frequency rates were analyzed for baseline characteristics. The group distributions were examined using the Kolmogorov-Smirnov test. The group analysis was performed using the non-parametric test methods due to the low number of participants. The Mann-Whitney U test was used for the analysis of independent quantitative data, and Wilcoxon test was used for the analysis of dependent data. The McNemar test was used for dependent variables, and the Chi-Square test was used for independent variables for studying the qualitative data. Cohen’s Formula was used for calculating the effect size of differences between and within the groups. The SPSS graphics were used to create figures; and a P value <0.05 was considered significant.