Skip to main content

Table 1 Median and quartiles of Visuo-Postural Dependency Index (VPDI) across participants (n = 102) for each postural index computed from center of pressure (COP) signals recorded during bipedal stance with eyes opened and closed. Results from Wilcoxon One-Sample test (visual input effect), Mann-Whitney U test (gender effect), and Pearson correlation test (age correlation) are presented

From: Visuo-postural dependency index (VPDI) in human postural control

 

vpdi (%)

Visual Input Effect (wilcoxon one-sample test)

Gender Effect (Mann-Whitney U test)

Age CORRELATION (Pearson test)

 

Median (Q1, Q3)

p-value

U, z (p-value)

r (p-value)

VPDI COP_median_freq_ap (%)

45.87 (5.64, 96.52)

<  0.001*

1018.0, − 0.060 (0.952)

− 0.18 (0.065)

VPDI COP_mean_vel_ap (%)

40.58 (18.20, 59.24)

<  0.001*

912.0, − 0.855 (0.393)

− 0.29 (0.003)

VPDI COP_area (%)

40.50 (5.02, 92.42)

<  0.001*

891.0, − 1.012 (0.311)

− 0.15 (0.140)

VPDI COP_total_mean_vel (%)

30.41 (14.73, 50.18)

<  0.001*

881.0, − 1.087 (0.277)

− 0.28 (0.005)

VPDI COP_range_ap (%)

25.38 (2.66, 48.28)

<  0.001*

922.0, − 0.780 (0.435)

− 0.11 (0.292)

VPDI COP_mean_jerk_ap (%)

23.70 (7.33, 38.29)

<  0.001*

968.5, − 0.431 (0.666)

− 0.29 (0.003)

VPDI COP_total_mean_jerk (%)

17.79 (5.51, 30.39)

<  0.001*

934.5, − 0.686 (0.493)

− 0.27 (0.006)

VPDI COP_sent_ap (%)

16.90 (− 0.08, 39.68)

<  0.001*

1011.50, − 0.109 (0.913)

− 0.20 (0.047)

VPDI COP_rms_ap (%)

13.80 (− 3.05, 37.65)

<  0.001*

938.0, − 0.660 (0.509)

− 0.07 (0.497)

VPDI COP_mean_vel_ml (%)

13.36 (3.37, 28.74)

<  0.001*

915.0, − 0.832 (0.405)

− 0.17 (0.086)

VPDI COP_range_ml (%)

13.32 (−5.84, 40.90)

<  0.001*

991.0, − 0.262 (0.793)

− 0.14 (0.170)

VPDI COP_rms_ml (%)

11.99 (− 4.21, 31.62)

<  0.001*

891.0, − 1.012 (0.311)

− 0.15 (0.145)

VPDI COP_total_length (%)

11.44 (− 1.6, 32.22)

<  0.001*

907.0, − 0.889 (0.372)

− 0.10 (0.324)

VPDI COP_median_freq_ml (%)

10.19 (−17.82, 41.46)

0.002*

961.0, − 0.487 (0.626)

− 0.08 (0.421)

VPDI COP_mean_jerk_ml (%)

8.87 (0.91, 17.60)

<  0.001*

906.0, − 0.900 (0.368)

− 0.17 (0.096)

VPDI COP_sent_ml (%)

0.99 (−10.15, 16.30)

0.384

1012.00, − 0.105 (0.916)

− 0.01 (0.954)

VPDI COP_crosssent (%)

−2.96 (− 21.09, 13.02)

0.206

989.00, − 0.277 (0.781)

0.07 (0.468)

  1. * p < 0.0029