Independent and sensitive gait parameters for objective evaluation in knee and hip osteoarthritis using wearable sensors

Table 2 Item loadings obtained from the factor analysis (n = 4) with varimax rotation

Gait parameters	Speed-spatial	Speed-temporal	Dual-task cost	Upper body motion
Stride Length (m)	0.907	0.270	0.050	−0.000
Gait Speed (m/s)	0.759	0.579	0.170	−0.062
Foot Strike Angle (deg)	0.742	0.120	−0.161	0.257
Toe Off Angle (deg)	0.628	0.267	0.129	−0.233
Stride Time CV (%)	−0.596	−0.260	− 0.077	−0.051
Cadence (steps/min)	0.203	0.830	0.284	−0.163
Turns – Peak velocity (deg/s)	0.420	0.745	−0.090	0.102
Turn Duration (s)	−0.453	−0.704	0.108	0.092
DTC Cadence (%)	0.067	0.010	0.935	0.047
DTC Gait Speed (%)	0.060	0.107	0.921	0.057
Lumbar Sagittal RoM (deg)	0.113	−0.159	0.028	0.611
Lumbar Transverse RoM (deg)	0.029	0.134	0.131	0.562
Trunk Sagittal RoM (deg)	0.008	−0.221	0.111	0.543
Trunk Coronal RoM (deg)	−0.049	−0.123	− 0.008	0.528
Explained variance (%)	30.0	22.5	20.7	14.6

Barlett’s test of sphericity confirmed absence of an identity matrix (χ² (190) = 1447.09, p < 0.001). Suitability of the dataset was indicated by the Kaiser-Meyer-Olkin measure, which was 0.666. Together the four factors explained 87.8% of the variance in our sample
CV coefficient of variation, DTC dual-task cost, RoM range of motion

ISSN: 1471-2474