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Table 3 Correlation matrix between the dynamic and the quasi-static test for individuals with SCI

From: Center-of-pressure total trajectory length is a complementary measure to maximum excursion to better differentiate multidirectional standing limits of stability between individuals with incomplete spinal cord injury and able-bodied individuals

Quasi-static test

Comfortable multidirectional limits of stability test

 

COPmax

 

Anterior

Right AL

Right

Right PL

Posterior

Left PL

Left

Left AL

RMS†

−0.194

0.217

−0.006

0.040

0.468

0.475

0.325

−0.275

MV†

−0.352

0.277

−0.232

−0.393

−0.080

0.361

0.064

−0.658**

SA†

−0.387

0.142

−0.204

−0.239

0.177

0.355

0.167

−0.559*

 

COP length

 

Anterior

Right AL

Right

Right PL

Posterior

Left PL

Left

Left AL

RMS†

−0.067

0.602*

0.365

0.004

0.441

0.138

0.241

0.366

MV†

0.050

0.501*

0.173

−0.133

0.290

0.190

0.091

0.081

SA†

0.011

0.482

0.120

−0.047

0.292

0.149

0.135

0.143

  1. †Pearson’s product moment correlation coefficient. *: p ≤ 0.05, **: p ≤ 0.01.
  2. RMS: root mean square distance of the COP; MV: mean velocity of the COP; SA: sway area of the COP; COPmax: maximal distance reached by the centre of pressure in the indicated direction. COPlength: length of the COP trajectory from the starting position to the maximal position of the COP; AL: anterolateral; PL: posterolateral.