The differences in the mood scores across the independent variables were analysed using mixed factorial ANOVA. An assumption of the repeated measures in ANOVA is that differences in the dependent variable scores must be essentially similar across the levels of both independent variables [13]. Based on Mauchly's test of sphericity, no significant differences in the variances of the differences in all of the subscales were found across the testing sessions. Therefore, the assumption of the homogeneity of variance was met.
The results revealed no significant interaction effects in any of the subscales. No significant main effect was found either. However, significant main effects on confusion, depression, fatigue, and tension subscales were found for testing sessions.
The results of the pairwise comparisons revealed significant differences between pre- and post- interventions for these four subscales while no differences were observed between baseline and pre-intervention. Detailed descriptions of the results are presented in Table 2.