Table 2.
The descriptive statistics and differences in results of the post-exposure postural stability tests with eyes open (EO) and eyes closed (EC).
| Variables | EO | EC | Tested value a | |||
|---|---|---|---|---|---|---|
| Me ±IQR | Min-max | Me ±IQR | Min-max | Z | P-value | |
| SP post (mm) | 169.5 ± 37.5 | 129.0–325.0 | 219.0 ± 46.0 | 155.0–408.0 | 4.171 | <0.001 |
| MA post (mm) | 2.1 ± 1.0 | 0.8–4.0 | 2.8 ± 1.6 | 1.3–5.3 | 3.428 | <0.001 |
| SA post (mm2) | 121.0 ± 60.5 | 32.0–320.0 | 201.0 ± 130.5 | 85.0–484.0 | 3.971 | <0.001 |
| MF post (Hz) | 0.44 ± 0.18 | 0.23–0.91 | 0.44 ± 0.19 | 0.23–0.68 | 1.505 | 0.132 |
a
The Wilcoxon signed-ranks test, asymptotic significance (2-sided).
SP Post, post-exposure length of sway path, MA Post, post-exposure mean amplitude, SA Post, post-exposure sway area, MF Post, post-exposure mean frequency, Me, median, IQR, inter-quartile range, Min-Max, minimum and maximum values.
Bolded p-values are statistically significant (α ≤ 0.05).