The statistics package SPSS, version 15.0, was used for the data
analysis. A mixed ANOVA was performed to analyse the interaction
between measurement and treatment in the physiological variables
and a Wilcoxon non-parametric test was performed to analyse the
differences between the means of the measurements before and
after the psychological scales test in both groups (study and control) independently. p0.05 was established as the significance
level in both analyses