Table 3.
Spatiotemporal comparison between motion capture system and smartphone application
| Gait conditions | System | Mean, SD | rꞙ |
|---|---|---|---|
| Pooled gait conditions | |||
| Double limb stance time (s) | Vicon | 0.279, 0.094 | 0.96 |
| OneStep | 0.269, 0.084 | ||
| Single limb stance time (s) | Vicon | 0.656, 0.128 | 0.99 |
| OneStep | 0.655, 0.124 | ||
| Step length (m) | Vicon | 0.711, 0.139 | 0.91 |
| OneStep | 0.678, 0.114 | ||
| Cadence (steps/min) | Vicon | 59.51, 9.58 | 0.99 |
| OneStep | 59.49, 9.54 | ||
| Stride length (m) | Vicon | 1.43, 0.269 | 0.95 |
| OneStep | 1.34, 0.221 | ||
| Swing time (s) | Vicon | 0.377, 0.041 | 0.95 |
| OneStep | 0.378, 0.044 | ||
| Gait speed (m/s) | Vicon | 1.42, 0.439 | 0.97 |
| OneStep | 1.32, 0.377 | ||
| Self-selected gait speed | |||
| Double limb stance time (s) | Vicon | 0.264, 0.030 | 0.62 |
| OneStep | 0.250, 0.029 | ||
| Single limb stance time (s) | Vicon | 0.641, 0.042 | 0.95 |
| OneStep | 0.638, 0.045 | ||
| Step length (m) | Vicon | 0.728, 0.060 | 0.65 |
| OneStep | 0.682, 0.040 | ||
| Cadence (steps/min) | Vicon | 59.12, 3.61 | 0.99 |
| OneStep | 59.11, 3.61 | ||
| Stride length (m) | Vicon | 1.46, 0.103 | 0.80 |
| OneStep | 1.36, 0.019 | ||
| Swing time (s) | Vicon | 0.377, 0.025 | 0.85 |
| OneStep | 0.380, 0.020 | ||
| Gait speed (m/s) | Vicon | 1.44, 0.127 | 0.89 |
| OneStep | 1.34, 0.124 | ||
| Fixed gait speed 0.8 m/s | |||
| Double limb stance time (s) | Vicon | 0.418, 0.037 | 0.83 |
| OneStep | 0.396, 0.035 | ||
| Single limb stance time (s) | Vicon | 0.840, 0.055 | 0.97 |
| OneStep | 0.834, 0.056 | ||
| Step length (m) | Vicon | 0.518, 0.037 | 0.58 |
| OneStep | 0.523, 0.030 | ||
| Cadence (steps/min) | Vicon | 47.63, 3.15 | 0.99 |
| OneStep | 47.62, 3.16 | ||
| Stride length (m) | Vicon | 1.05, 0.067 | 0.81 |
| OneStep | 1.04, 0.054 | ||
| Swing time (s) | Vicon | 0.423, 0.033 | 0.92 |
| OneStep | 0.430, 0.029 | ||
| Gait speed (m/s) | Vicon | 0.800, 0.012 | 0.85 |
| OneStep | 0.789, 0.032 | ||
| Fixed gait speed 2.0 m/s | |||
| Double limb stance time (s) | Vicon | 0.171, 0.020 | 0.63 |
| OneStep | 0.179, 0.020 | ||
| Single limb stance time (s) | Vicon | 0.503, 0.037 | 0.97 |
| OneStep | 0.513, 0.039 | ||
| Step length (m) | Vicon | 0.870, 0.076 | 0.45 |
| OneStep | 0.829, 0.076 | ||
| Cadence (steps/min) | Vicon | 72.10, 5.64 | 0.99 |
| OneStep | 72.03, 5.55 | ||
| Stride length (m) | Vicon | 1.75, 0.134 | 0.81 |
| OneStep | 1.57, 0.165 | ||
| Swing time (s) | Vicon | 0.332, 0.024 | 0.92 |
| OneStep | 0.324, 0.022 | ||
| Gait speed (m/s) | Vicon | 2.00, 0.102 | 0.71 |
| OneStep | 1.80, 0.109 | ||
| Self-selected gait speed and dual task | |||
| Double limb stance time (s) | Vicon | 0.264, 0.030 | 0.83 |
| OneStep | 0.250, 0.032 | ||
| Single limb stance time (s) | Vicon | 0.639, 0.040 | 0.96 |
| OneStep | 0.636, 0.044 | ||
| Step length (m) | Vicon | 0.728, 0.058 | 0.63 |
| OneStep | 0.698, 0.047 | ||
| Cadence (steps/min) | Vicon | 59.18, 3.31 | 0.99 |
| OneStep | 59.20, 3.33 | ||
| Stride length (m) | Vicon | 1.46, 0.108 | 0.76 |
| OneStep | 1.39, 0.100 | ||
| Swing time (s) | Vicon | 0.377, 0.023 | 0.85 |
| OneStep | 0.379, 0.020 | ||
| Gait speed (m/s) | Vicon | 1.44, 0.133 | 0.87 |
| OneStep | 1.37, 0.140 |
Standard deviation (SD), Pearson correlation coefficient (r)
ꞙ< 0.30 (negligible), 0.30–0.50 (low), 0.50–0.70 (moderate), 0.70–0.90 (high), > 0.90 (very high)