Comparing Three Dual-Task Methods and the Relationship to Physical and Cognitive Impairment in People with Multiple Sclerosis and Controls
Table 2
Gait variables during self-selected walking and DT conditions.
Low disability
High disability
Controls
SS
DT ABC
DT 7
DT 3
SS
DT ABC
DT 7
DT 3
SS
DT ABC
DT 7
DT 3
Stride length (cm)
135.64 ± 14.07
121.64 ± 16.66
116.55 ± 19.09
121.40 ± 16.55
123.35 ± 25.96
114.87 ± 25.27
110.77 ± 27.14
115.91 ± 27.69
135.32 ± 11.89
128.79 ± 12.54
126.28 ± 14.48
127.71 ± 10.79
Stride width (cm)
8.00 ± 4.69
7.14 ± 5.52
8.12 ± 5.55
7.61 ± 5.22
11.52 ± 2.94
10.76 ± 3.16
11.31 ± 2.93
11.60 ± 3.07
8.42 ± 3.41
9.20 ± 3.12
10.18 ± 3.08
9.40 ± 2.97
Double support (%)
28.61 ± 2.80
32.78 ± 4.67
34.71 ± 5.87
32.19 ± 6.09
35.14 ± 9.78
38.05 ± 11.71
40.40 ± 12.97
39.16 ± 11.84
27.25 ± 2.57
29.26 ± 5.78
30.48 ± 8.84
29.86 ± 5.62
Velocity (cm/s)
118.27 ± 12.54
76.12 ± 25.24
72.31 ± 26.28
76.31 ± 17.08
101.29 ± 34.28
77.66 ± 29.84
80.36 ± 35.89
78.16 ± 36.43
117.37 ± 15.72
91.96 ± 23.24
87.88 ± 27.39
91.45 ± 27.27
Cadence (steps/min)
104.04 ± 8.68
74.01 ± 19.63
72.92 ± 17.96
75.77 ± 13.35
94.07 ± 22.94
79.03 ± 22.38
81.07 ± 27.63
77.03 ± 26.59
103.48 ± 10.56
85.82 ± 20.90
83.63 ± 22.42
91.45 ± 20.80
Different from same condition in control group (); different from same condition in high disability group (); different from self-selected walking in the same group (); different from DT 7 in the same group (); SS: self-selected walking; DT ABC: dual-task while reciting alternate letters of alphabet; DT 7: dual-task while serially subtracting 7’s from 100; DT 3: dual-task while counting, leaving out multiples and numbers including 3; DTC: dual-task cost; values are mean ± standard deviation.
