A statistical comparison of power of theta, alpha-1, alpha-2, beta, and gamma bands was calculated by repeated-measure analyses of variance (ANOVA) including the within-subject factors as training condition (physical Qigong training, mental Qigong training, video control, baseline rest), condition (eyes-open, eyes-closed), and location (Frontal, Central, Temporal, Parietal, Occipital), followed by Bonferroni corrected post hoc tests for further comparisons. ηP2 was calculated to obtain effect sizes. Effects were considered to be statistically significant when the p-values were less or equal than 0.05. All data are expressed as the mean ± S.E.