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.