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Table 5 Comparison of parameters extracted from force plates in the validation group (VG)

From: A new instrumented method for the evaluation of gait initiation and step climbing based on inertial sensors: a pilot application in Parkinson’s disease

  

Gait initiation

Step climbing

  

HC

PD VG

p-value

HC

PD VG

p-value

Imbalance

ML

2.17 ± 0.70

1.35 ± 0.74

0,04*

2.48 ± 0.97

1.60 ± 0.59

0.02*

Δt

0.30 ± 0.03

0.30 ± 0.09

0.77

0.49 ± 0.16

0.40 ± 0.13

0.29

Unloading

ML

−9.35 ± 1.85

−7.41 ± 1.50

0.06

- 9.55 ± 1.94

- 7.86 ± 0.62

0.02*

Δt

0.38 ± 0.09

0.40 ± 0.19

0.82

0.37 ± 0.07

0.53 ± 0.26

0.25

APA

ML

−7.18 ± 1.40

−6.05 ± 1.36

0.16

- 6.95 ± 1.32

- 6.26 ± 0.31

0.13

Δt

0.68 ± 0.09

0.69 ± 0.28

0.95

0.86 ± 0.17

0.93 ± 0.17

0.7

Swing

Δt

0.48 ± 0.07

0.44 ± 0.04

0.24

0.64 ± 0.08

0.62 ± 0.04

0.43

Step

Δt

1.19 ± 0.14

1.18 ± 0.29

0.96

1.43 ± 0.18

1.42 ± 0.12

0.86

  1. Comparison between the healthy controls (HC) and the subgroup of 5 PD patients enrolled in the validation group (PDVG).
  2. COP displacement in the medio-lateral direction (ML; mean ± SD [cm]) and durations (Δt; mean ± SD [s]) of the different phases and the complete test in the two different transitional tasks. Data of the healthy controls (HC) and the subgroup of 5 PD patients enrolled in the validation group (PD VG ) are reported. Significant differences (p-value < 0.05) are marked with*.