Table 1.

Main characteristics and walking parameters of the two groups

	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

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).

¹with prosthesis in AMP

²from first fitting