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Table 4 Descriptive results (mean ± SD) and pairwise comparisons of the complexity index of single-task and dual-task trials 

From: Regularity of kinematic data between single and dual-task treadmill walking in people with Parkinson’s disease

Signal

Direction

Single-task

Dual-task

t or Z

p-value

DTI (%)

LA-FootAV

ML

9.324 ± 1.318

9.826 ± 1.908

− 1.453

0.165

5.4

AP

21.384 ± 4.711

22.448 ± 3.953

− 1.965

0.049

5.0

V

20.395 ± 3.098

21.265 ± 3.213

− 2.886

0.011

4.3

LA-ShankAV

ML

7.470 ± 0.825

7.934 ± 1.258

− 1.804

0.090

6.2

AP

18.038 ± 2.215

19.323 ± 2.659

− 2.627

0.009

7.1

V

22.550 ± 3.435

23.527 ± 3.774

− 2.634

0.018

4.3

LA-ThighAV

ML

8.377 ± 1.458

9.015 ± 2.078

− 2.029

0.059

7.6

AP

18.705 ± 2.259

20.596 ± 2.918

− 3.747

0.002

10.1

V

22.976 ± 3.500

25.023 ± 4.395

− 3.812

0.002

8.9

MA-FootAV

ML

8.836 ± 1.002

9.455 ± 1.675

− 2.102

0.052

7.0

AP

18.989 ± 3.367

20.605 ± 3.826

− 2.293

0.036

8.5

V

19.222 ± 2.755

20.317 ± 3.132

− 2.180

0.045

5.7

MA-ShankAV

ML

7.390 ± 0.786

7.832 ± 1.221

− 1.999

0.063

6.0

AP

17.483 ± 3.013

19.470 ± 3.713

− 3.006

0.003

11.4

V

21.143 ± 3.531

22.472 ± 3.594

− 2.420

0.028

6.3

MA-ThighAV

ML

8.135 ± 1.250

8.987 ± 2.012

− 2.040

0.058

10.5

AP

17.713 ± 2.134

19.896 ± 2.858

− 3.123

0.007

12.3

V

22.980 ± 3.272

24.439 ± 3.284

− 2.937

0.010

6.3

COG-LA

ML

12.996 ± 2.483

14.721 ± 3.245

− 4.662

0.000

13.3

AP

16.645 ± 2.518

17.513 ± 3.237

− 2.372

0.031

5.2

V

15.715 ± 3.267

16.680 ± 3.734

− 2.155

0.047

6.1

SternumLA

ML

16.497 ± 3.261

17.938 ± 3.689

− 3.820

0.002

8.7

AP

25.051 ± 3.567

25.877 ± 4.029

− 1.757

0.098

3.3

V

15.957 ± 3.536

17.195 ± 4.090

− 2.796

0.013

7.8

  1. alues in bold indicate a significant (p < 0.05) difference
  2. Dual-task interference (DTI) is calculated as DTI (%) = [(dual-task feature—single-task feature)/single-task feature] \(\times\) 100