highly significantP < 0.001
Mean energy level (EL) increased significantly, but no significant change occurred in overall Yin-Yang balance, upper-lower balance or left-right balance [ Table 1 ], as previously stated.[ 37 ] However, the preliminary analysis noted a distinct narrowing of the mean ± 2SD's in upper-lower and left-right balance variables, which was shown to originate in highly significant, negative correlations between pre-values and pre-post differences ( P < 0.001) in both variables[ 37 ] [Table 2a and b ].