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Table 1 Main characteristics and walking parameters of the two groups

From: Recommended number of strides for automatic assessment of gait symmetry and regularity in above-knee amputees by means of accelerometry and autocorrelation analysis

 

AMP

CTRL

P

Main characteristics

N

10

10

-

Age (years)

45.7 ± 3.1

27.7 ± 1.2

< 0.0001

Height (cm)

175.9 ± 1.7

179.8 ± 1.5

0.096

Body mass (Kg)1

75.8 ± 2.2

73.4 ± 3.1

0.48

Prosthesis use duration (months)2

127.2 ± 38.0

-

-

Electronic leg use duration (months)

37.9 ± 10.5

-

-

General walking parameters

Natural walking speed (km/h)

4.0 ± 0.2

4.8 ± 0.3

0.036

CadenceV (stride/min)

51.23 ± 0.88

56.59 ± 1.75

0.061

CadenceAP (stride/min)

51.23 ± 0.88

56.57 ± 1.75

0.062

Symmetry of step

Ad1V (unitless)

0.566 ± 0.036

0.939 ± 0.004

< 0.0001

Ad1AP (unitless)

0.359 ± 0.048

0.884 ± 0.007

< 0.0001

Regularity of stride

Ad2V (unitless)

0.819 ± 0.016

0.930 ± 0.004

< 0.0001

Ad2AP (unitless)

0.763 ± 0.019

0.884 ± 0.008

< 0.0001

  1. AMP - amputees; CTRL - control subjects. Subscript V - Vertical; AP - Antero-posterior. Of note, cadence from V and AP signals is virtually the same, as expected. Reported values are mean ± standard error (SE).
  2. 1with prosthesis in AMP
  3. 2from first fitting