Table 3 Linear CoM and head parameters (path and area of the \(95\%\) confidence ellipse) and the nonlinear CoM and head parameters (sample entropy and Higuchi’s fractal dimension) of the study groups. Data are expressed as median (interquartile range)
Control | Dancer | |||
|---|---|---|---|---|
before | after | before | after | |
\({P}_{CoM}\) [cm] | 95.04 (69.16) | 165.90 (140.39) \(^{\dagger }\) | 82.86 (26.86) | 92.84 (49.30) |
\({A}_{95\%,CoM}\) [cm\(^2\)] | 17.89 (66.83) | 71.28 (199.60) | 16.07 (11.22) | 28.63 (102.87) |
\({P}_{head}\) [cm] | 279.12 (186.83) | 456.85 (390.08) \(^{\dagger }\) | 195.78 (92.20) | 212.79 (79.98) \(^*\) |
\({A}_{95\%,head}\) [cm\(^2\)] | 212.42 (504.58) | 556.90 (990.77) | 120.68 (131.21) | 151.82 (134.70) \(^{*}\) |
\({SampEn}_{CoM,ML}\) [-] | 0.036 (0.007) | 0.058 (0.053) \(^{\dagger }\) | 0.033 (0.012) | 0.037 (0.019) \(^{*}\) |
\({SampEn}_{CoM,AP}\) [-] | 0.035 (0.024) | 0.080 (0.049) \(^{\dagger }\) | 0.035 (0.013) | 0.034 (0.017) \(^{*}\) |
\({FD}_{CoM,ML}\) [-] | 1.06 (0.02) | 1.06 (0.03) | 1.07 (0.04) | 1.07 (0.03) |
\({FD}_{CoM,AP}\) [-] | 1.08 (0.04) | 1.07 (0.02) | 1.09 (0.04) | 1.10 (0.04) \(^*\) |
\({SampEn}_{head,ML}\) [-] | 0.087 (0.035) | 0.164 (0.141) \(^{\dagger }\) | 0.073 (0.040) | 0.071 (0.038) |
\({SampEn}_{head,AP}\) [-] | 0.095 (0.030) | 0.162 (0.207) | 0.074 (0.047) | 0.075 (0.037) \(^{*}\) |
\({FD}_{head,ML}\) [-] | 1.02 (0.01) | 1.02 (0.01) | 1.03 (0.02) | 1.03 (0.02) |
\({FD}_{head,AP}\) [-] | 1.04 (0.02) | 1.04 (0.03) | 1.04 (0.03) | 1.06 (0.01) \(^*\) |