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. 2012 Dec 29;2012:671261. doi: 10.1155/2012/671261

Table 2.

Mean (SD) values for walking and the cognitive task values in all groups under single-task (ST) and both dual-task conditions.

ST DTwalk DTcog
Gait speed (m/s)
HYA 1.86 (.21) 1.88 (.22) 1.80 (.23)
HOA 1.56 (.25) 1.58 (.25) 1.51 (.29)
PD 1.33 (.24) 1.28 (.22) 1.22 (.22)

Stride length (m)
HYA 1.68 (0.15) 1.68 (.15) 1.63 (.15)
HOA 1.43 (0.20) 1.40 (.21) 1.38 (.22)
PD 1.31 (0.20) 1.27 (.19) 1.24 (.20)

Cadence (steps/min)
HYA 134 (15) 135 (16) 132 (16)
HOA 131 (12) 135 (13) 132 (15)
PD 122 (15) 122 (16) 119 (14)

Step width (m)
HYA 0.14 (.02) 0.14 (.02) 0.14 (.02)
HOA 0.13 (.02) 0.14 (.03) 0.13 (.03)
PD 0.13 (.03) 0.13 (.04) 0.13 (.04)

Step width variability (%)
HYA 15.1 (5.2) 15.7 (6.0) 13.3 (4.5)
HOA 17.8 (4.9) 16.2 (3.8) 17.9 (4.4)
PD 16.2 (5.0) 14.8 (5.0) 16.3 (4.5)

Stride time variability (%)
HYA 2.3 (.7) 2.1 (.7) 2.0 (.5)
HOA 2.6 (1.2) 2.5 (.8) 2.3 (1.0)
PD 2.7 (1.0) 2.7 (1.0) 2.8 (1.4)

Inclination angle (degrees)
HYA 7.4 (.6) 7.4 (.7) 7.5 (.7)
HOA 7.6 (1.0) 7.6 (1.0) 7.5 (1.1)
PD 7.5 (.9) 7.6 (1.0) 7.5 (.9)

Response latency (s)
HYA 0.65 (.10) 0.82 (.12) .66 (.10)
HOA 0.87 (.15) 0.90 (.15) 0.89 (.13)
PD 0.97 (.17) 1.08 (.24) 1.03 (.24)

Response accuracy (%)
HYA 99.2 (1.1) 98.8 (2.3) 99.7 (.9)
HOA 98.0 (3.9) 97.4 (5.5) 97.1 (5.7)
PD 90.3 (11.2) 89.9 (13.5) 92.9 (11.1)