Clinical Study
Quantifying Gait Impairment Using an Instrumented Treadmill in People with Multiple Sclerosis
Table 2
Descriptive statistics of the spatiotemporal gait parameters.
| | Variable | Mean (S.D.) | Mean difference (95% CI) | value | | MS participants () | Healthy subjects () |
| | Velocity (km/h) | 2.2 (1.0) | 3.5 (0.7) | −1.3 (−1.7, −0.9) | <0.001 | | Cadence (steps/min) | 94.4 (18.5) | 101.1 (11.3) | −6.7 (−12.7, −0.7) | 0.03 | | Step time R (sec) | 0.66 (0.15) | 0.60 (0.07) | 0.06 (0.02, 0.1) | 0.007 | | Step time L (sec) | 0.67 (0.15) | 0.60 (0.07) | 0.07 (0.02, 0.1) | 0.002 | | Step length R (cm) | 37.7 (14.8) | 57.1 (8.7) | −19.4 (−24.0, −14.7) | <0.001 | | Step length L (cm) | 37.4 (14.5) | 57.6 (8.6) | −20.2 (−24.9, −15.6) | <0.001 | | Stance R (% GC) | 69.4 (5.4) | 64.4 (2.0) | 5.0 (3.6, 6.4) | <0.001 | | Stance L (% GC) | 69.3 (5.6) | 64.2 (2.1) | 5.1 (3.7, 6.5) | <0.001 | | Single support R (% GC) | 30.6 (5.6) | 35.6 (2.1) | −5.0 (−6.6, −3.7) | <0.001 | | Single support L (% GC) | 30.6 (5.5) | 35.6 (2.0) | −5.0 (−6.5, −3.6) | <0.001 | | Double support (% GC) | 38.8 (10.5) | 28.6 (4.0) | 10.2 (7.4, 12.9) | <0.001 | | Stride time (sec) | 1.33 (0.29) | 1.20 (0.14) | 0.13 (0.04, 0.2) | 0.004 | | Stride length (cm) | 75.1 (29.0) | 114.7 (17.1) | −39.6 (−51.7, −27.5) | <0.001 | | Base of support (cm) | 13.8 (4.1) | 11.0 (3.0) | 2.8 (1.1, 4.6) | <0.001 |
| | Statistics obtained from the butterfly diagram | | A-P variability (mm) | 8.5 (5.9) | 3.4 (1.3) | 5.1 (3.7, 6.4) | <0.001 | | Lateral symmetry (mm) | 8.6 (7.9) | 3.3 (2.5) | 5.3 (3.4, 7.3) | 0.001 | | Lateral variability (mm) | 18.3 (13.6) | 7.6 (8.1) | 10.7 (6.4, 15.1) | <0.001 |
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