3.4.6. Post Hoc Power Analysis
The post hoc power analysis revealed that the powers of the present sample size in determining the differences between MFI-physical scores at week 2 (effect size = 0.958), week 4 (effect size = 0.841), and week 6 (effect size = 0.896) were 83.9%, 73.6%, and 78.8% respectively. The effect size estimated in this study suggested that a sample size of 24 for each group would be needed to detect between-group differences in MFI-physical scores at week 4 with a power of 80% and type I errors at 5%.