Table 2 Comparison of results for static posturography obtained with normal standing, eyes open (NS EO) and eyes closed (NS EC) positions in the THR and control groups (Mann-Whitney test)
From: Does total hip replacement impact on postural stability?
NS EO | NS EC | ||||||||
|---|---|---|---|---|---|---|---|---|---|
variable | group | mean (SD) | min - max | median | p | mean ± SD | min - max | median | p |
Y(mm/s) | THR control | 7.24 (2.33) | 3.5–12.3 | 7.05 | 0.014 | 11.77 (4.04) | 4.4–20.4 | 11.5 | 0.021 |
5.94 (2.58) | 2.6–14.6 | 4.95 | 9.57 (3.55) | 5.0–17.2 | 8.7 | ||||
X (mm/s) | THR control | 3.16 (0.96) | 1.6–5.7 | 3.05 | 0.214 | 3.98 (1.44) | 1.5–7.1 | 3.9 | 0.882 |
2.87 (1.10) | 1.5–5.8 | 2.55 | 4.08 (1.77) | 2.1–8.3 | 3.8 | ||||
spectrum Y (Hz) | THR control | 0.365 (0.131) | 0.149–0.640 | 0.366 | 0.965 | 0.391 (0.154) | 0.197–0.745 | 0.354 | 0.023 |
0.391 (0.179) | 0.205–0.831 | 0.341 | 0.490 (0.184) | 0.155–0.998 | 0.470 | ||||
spectrum Y (mm) | THR control | 0.369 (0.061) | 0.276–0.564 | 0.363 | 0.109 | 0.449 (0.103) | 0.271 ± 0.659 | 0.411 | 0.013 |
0.345 (0.049) | 0.245–0.474 | 0.335 | 0.381 (0.067) | 0.263 ± 0.507 | 0.386 | ||||
spectrum X (Hz) | THR control | 0.272 (0.145) | 0.102–0.689 | 0.237 | 0.595 | 0.284 (0.146) | 0.113–0.750 | 0.265 | 0.442 |
0.239 (0.090) | 0.118–0.457 | 0.205 | 0.314 (0.159) | 0.134–0.620 | 0.269 | ||||
spectrum X (mm) | THR control | 0.101 (0.043) | 0.047–0.257 | 0.089 | 0.620 | 0.123 (0.042) | 0.045–0.207 | 0.115 | 0.290 |
0.095 (0.040) | 0.041–0.179 | 0.091 | 0.116 (0.055) | 0.056–0.321 | 0.105 | ||||