 Data were expressed, as mean SEM. To determinate the differences in score between groups over time, the data were then analyzed by a two-way repeated measures ANOVA with time week as the repeated measure. If there was a significant interaction between time and treatment, we then performed a Tukeys post-hoc test to detect significant differences between each one of the factors at each experimental phase. Comparisons between mean score obtained during each phase were analyzed by a two-way ANOVA treatment x phase followed by Tukeys test for post-hoc comparisons. The level of statistical significance was set at p 0.05. 