Table 4 Evolution of the Locometrix ^® parameters for both groups

Gait speed (meter/second)

 Simple task

- 0.03 ± 0.21

- 0.05 ± 0.10

.89

.82

 Dual task

+ 0.02 ± 0.22

+ 0.05 ± 0.12

.63

.92

 P-Value

.10

<.01

Stride frequency

(cycle/second)

- 0.22 ± 0.21

- 0.15 ± 0.30

.47

.72

 Simple task

- 0.03 ± 0.27

- 0.01 ± 0.21

.87

.31

 Dual task

.14

.13

 P-Value

Stride length (meter)

 Simple task

+ 0.15 ± 0.23

+ 0.06 ± 0.23

.33

.90

 Dual task

+ 0.02 ± 0.44

- 0.06 ± 0.21

.78

.41

 P-Value

.25

.66

Stride symmetry (arb. unit.)

 Simple task

+ 4.23 ± 58.6

- 9.21 ± 56.6

.55

.86

 Dual task

+ 55.3 ± 88.7

- 11.7 ± 72.1

.06

.47

 P-Value

.10

.88

Stride regularity (arb. unit.)

 Simple task

- 12.2 ± 44.6

- 25.3 ± 72.8

.58

.32

 Dual task

- 8.40 ± 47.2

+ 16.7 ± 81.3

.40

.85

 P-Value

.81

<.01

Cranio-caudal mechanic power (Watts/kg)

 Simple task

- 0.05 (− 0.34-0.37)

- 0.09 (− 0.63-0.11)

.65

.83

 Dual task

- 0.02 (− 0.21-0.32)

+ 0.01 (− 0.11-0.24)

.87

.87

 P-Value

.72

.35

Antero-posterior mechanic power (Watts/kg)

 Simple task

- 0.07 (− 0.23-0.14)

- 0.02 (− 0.11-0.05)

.81

.82

 Dual task

- 0.06 (− 0.18-0.08)

- 0.005 (− 0.7-0.14)

.82

.24

 P-Value

.65

.27

Medio-lateral mechanic power (Watts/kg)

 Simple task

+ 0.02 (− 0.13-0.15)

+ 0.005 (− 0.18-0.10)

.54

.23

 Dual task

- 0.07(− 0.11-0.11)

+ 0.06 (− 0.02-0.13)

.34

.64

 P-Value

.39

.53

Counting speed (number/second)

 Simple task

+ 0.15 ± 0.28

+ 0.03 ± 0.11

.19

.54

 Dual task

+ 0.08 ± 0.16

+ 0.01± 0.28

.49

.23

 P-Value

.34

.78