| |
Walking while counting
|
Walking while serially subtracting
|
Walking while reciting digit spans
|
|---|
|
fNIRS
|
|
O2Hb left (μmol/L)
|
0.32 (−0.18–0.82)
|
0.49 (0.14–0.84)
|
0.44 (0.09–0.78)
|
|
O2Hb right (μmol/L)
|
0.31 (−0.12–0.75)
|
0.46 (0.12–0.81)
|
0.36 (0.03–0.70)
|
|
HHb left (μmol/L)
|
0.03 (−0.28–0.33)
|
0.01 (−0.15–0.17)
|
−0.03 (−0.16–0.10)
|
|
HHb right (μmol/L)
|
0.00 (−0.28–0.28)
|
−0.02 (−0.25–0.21)
|
−0.10 (−0.24–0.05)
|
|
Gait performance
|
|
Gait speed (cm/s)
|
83.7 (73.7–93.7)
|
82.3 (71.8–92.9)
|
79.9 (68.2–91.6)
|
|
Cadence (steps/min)
|
94.6 (86.2–103)
|
93.2 (84.6–101.9)
|
94.0 (84.0–104.0)
|
|
Stride length (cm)
|
106.3 (97.7–114.9)
|
106 (96.6–115.4)
|
101.2 (91.5–111.0)**
|
|
Stride length variability (%)
|
4.2 (3.2–5.2)
|
4.5 (2.9–6.2)
|
5.4 (4.4–6.5)*
|
|
Stride time (s)
|
1.3 (1.2–1.4)
|
1.3 (1.2–1.4)
|
1.3 (1.2–1.5)
|
|
Stride time variability (%)
|
4.2 (2.4–5.9)
|
4.0 (2.9–5.2)
|
3.6 (2.7–4.6)
|
- Values are mean (95 % confidence intervals)
- *P < .05 compared to walking while counting
- **P < .05 compared to both walking while talking and serially subtracting
