Baseline 6-cycle Breathing Hyperventilation lnT lnE lnT lnE lnT lnE IMF1 -2.43 ± 0.13 2.4 ± 0.76 -2.44 ± 0.15 2.17 ± 1.04 -2.47 ± 0.21 2.58 ± 0.9 IMF2 -1.67 ± 0.12 5.96 ± 0.51 -1.66 ± 0.11 5.91 ± 0.68 -1.62 ± 0.11 6.09 ± 0.55 IMF3 -0.85 ± 0.09 7.39 ± 0.51 -0.85 ± 0.08 7.35 ± 0.6 -0.88 ± 0.09 7.63 ± 0.47 IMF4 -0.16 ± 0.11 8.33 ± 0.73 -0.12 ± 0.12 8.31 ± 0.74 -0.23 ± .012 8.25 ± 0.72 IMF5 0.92 ± 0.26 3.79 ± 0.79 0.84 ± 0.2 3.75 ± 0.62 0.93 ± 0.17 4.91 ± 0.61 IMF6 1.85 ± 0.21 3.24 ± 0.7 2.27 ± 0.19 5.35 ± 1.07 1.86 ± 0.27 3.49 ± 1.52 IMF7 2.84 ± 0.2 3.45 ± 1.1 2.77 ± 0.24 4.86 ± 1.03 2.91 ± 0.26 3.68 ± 1.52 Residue 3.57 ± 0.2 2.69 ± 1.15 3.65 ± 0.2 3.45 ± 1.45 3.58 ± 0.19 2.98 ± 1.43

The presented form is (average ± standard deviation). IMF denotes intrinsic mode function; lnT denotes logarithmic averaged period; lnE denotes logarithmic energy density.

Table 1: The logarithmic averaged period and corresponding logarithmic energy density of each IMF during different breathing patterns.