Table 3 Comparison between the studied groups according to functional gait assessment

Item 1: gait level surfaces

 Severe impairment

0 (0%)

6 (30%)

8 (40%)

χ² = 64.704*

^MCp < 0.001*

0.507

 Moderate impairment

0 (0%)

14 (70%)

12 (60%)

 Mild impairment

0 (0%)

0 (0%)

0 (0%)

 Normal

20 (100%)

0 (0%)

0 (0%)

Time consumed in 6-m walk (s)

 Mean ± SD

5 ± 0.3

17.6 ± 7.4

26.3 ± 8.7

F = 53.361*

< 0.001*

< 0.001*

 Median (Min.–Max.)

5 (4.5–5.5)

16 (8–32)

26.5 (13–41)

Item 2: change in gait speed

 Severe impairment

0 (0%)

2 (10%)

0 (0%)

χ² = 55.274*

^MCp < 0.001*

0.148

 Moderate impairment

0 (0%)

5 (25%)

6 (30%)

 Mild impairment

0 (0%)

10 (50%)

14 (70%)

 Normal

20 (100%)

3 (15%)

0 (0%)

Item 3: gait with horizontal head turns

 Severe impairment

0 (0%)

1 (5%)

0 (0%)

χ² = 40.200*

^MCp < 0.001*

^MCp₁ = 0.258

 Moderate impairment

0 (0%)

9 (45%)

8 (40%)

 Mild impairment

4 (20%)

8 (40%)

12 (60%)

 Normal

16 (80%)

2 (10%)

0 (0%)

Item 4: gait with vertical head turns

 Severe impairment

0 (0%)

0 (0%)

0 (0%)

χ² = 57.049*

^MCp < 0.001*

^MCp₁ = 0.273

 Moderate impairment

0 (0%)

11 (55%)

15 (75%)

 Mild impairment

0 (0%)

7 (35%)

5 (25%)

 Normal

20 (100%)

2 (10%)

0 (0%)

Item 5: gait with pivot turn

 Severe impairment

0 (0%)

2 (10%)

6 (30%)

χ² = 55.778*

^MCp < 0.001*

^MCp₁ = 0.012*

 Moderate impairment

0 (0%)

11 (55%)

14 (70%)

 Mild impairment

4 (20%)

6 (30%)

0 (0%)

 Normal

16 (80%)

1 (5%)

0 (0%)

Item 6: step over obstacle

 Severe impairment

0 (0%)

4 (20%)

0 (0%)

χ² = 68.184*

^MCp < 0.001*

^MCp₁ = 0.001*

 Moderate impairment

0 (0%)

12 (60%)

7 (35%)

 Mild impairment

0 (0%)

2 (10%)

13 (65%)

 Normal

20 (100%)

2 (10%)

0 (0%)