Table 2.
Definitions of the gait-related variables.
| Variables | Definition |
|---|---|
| Pace parameters | |
| Walking speed (m/s) | Performed treadmill walking speed |
| Stride length (m) | Distance between the first contact of one foot to the first contact of the following ipsilateral foot, measured parallel to the direction of progression |
| Step length (m) | Distance between the successive heel points of opposite feet, measured parallel to the direction of progression |
| Rhythm parameters | |
| Cadence (beats/min) | Total number of steps during 1 min |
| Stride time (s) | Time taken between the first contact of one foot to the first contact of the following ipsilateral foot |
| Step time (s) | Time taken between the first contact of one foot to the first contact of the following contralateral foot |
| Phase parameters | |
| Single support phase (%) | Time when one foot is in contact with the ground during one stride cycle |
| Double support phase (%) | Time when both feet is in contact with the ground during one stride cycle |
| Stance phase (%) | Time when foot is in contact with the ground during one stride cycle |
| Gait variability | |
| Parameters for pace, rhythm, and phase (%) | Coefficient of variance ((standard deviation/mean) × 100) for stride length, step length, stride time, step time, single support phase, double support phase, and stance phase |
| Bilateral coordination [9] | |
| GA (%) | Temporal symmetry between the left and right foot during walking |
| PCI (%) | Coordination between the left and right foot during walking |
GA: gait asymmetry; PCI: phase coordinate index.