. 2024 Jan 20;24(2):662. doi: 10.3390/s24020662

Table 4.

Test–retest reliability results.

Domains	Test Mean (SD)	Retest Mean (SD)	ICC	95% CI		SEM	MDC
Domains	Test Mean (SD)	Retest Mean (SD)	ICC	Lower Limit	Upper Limit	SEM	MDC
Rhythm and Pace
Stride duration [s]	0.95 (0.08)	0.95 (0.09)	0.98	0.94	0.99	1.28	3.54
Stance [%]	62.96 (1.06)	63.27 (1.41)	0.75	0.42	0.90	0.61	1.7
Swing [%]	37.04 (1.06)	36.73 (1.41)	0.75	0.42	0.90	0.61	1.7
Double support [%]	26.04 (1.94)	26.63 (2.57)	0.89	0.72	0.96	0.75	2.07
Stride length [m]	1.40 (0.24)	1.37 (0.23)	0.98	0.94	0.99	0.04	0.10
Variability
Stride duration [-]	1.97 (0.82)	2.09 (0.90)	0.93	0.83	0.97	0.23	0.64
Stance [-]	1.87 (0.75)	1.90 (0.87)	0.95	0.89	0.98	0.17	0.48
Swing [-]	3.20 (1.30)	3.27 (1.48)	0.95	0.89	0.98	0.30	0.83
Single support [-]	1.65 (0.93)	1.80 (1.18)	0.95	0.87	0.98	0.24	0.67
Double support [-]	4.87 (2.67)	5.27 (3.09)	0.96	0.91	0.98	0.56	1.56
Regularity
Step module [-]	0.80 (0.08)	0.80 (0.11)	0.90	0.76	0.96	0.03	0.08
Step AP [-]	0.55 (0.19)	0.54 (0.20)	0.89	0.74	0.96	0.06	0.18
Step ML [-]	−0.59 (0.15)	−0.59 (0.17)	0.90	0.76	0.96	0.05	0.14
Step VT [-]	0.79 (0.09)	0.77 (0.13)	0.90	0.76	0.96	0.03	0.10
Stride module [-]	0.86 (0.07)	0.84 (0.08)	0.92	0.79	0.97	0.02	0.06
Stride AP [-]	0.70 (0.13)	0.68 (0.12)	0.86	0.67	0.94	0.05	0.13
Stride ML [-]	0.71 (0.10)	0.69 (0.10)	0.91	0.77	0.96	0.03	0.09
Stride VT [-]	0.85 (0.08)	0.83 (0.09)	0.92	0.79	0.97	0.02	0.07
Jerkiness
Njerk AP [-]	0.44 (0.11)	0.45 (0.11)	0.89	0.73	0.95	0.04	0.10
Njerk ML [-]	0.35 (0.06)	0.35 (0.05)	0.91	0.79	0.96	0.02	0.04
Njerk VT [-]	0.10 (0.03)	0.10 (0.02)	0.93	0.84	0.97	0.01	0.02
Intensity
RMS Acc AP [m/s²]	2.26 (0.99)	2.36 (1.25)	0.93	0.84	0.97	0.29	0.80
RMS Acc ML [m/s²]	2.52 (1.29)	2.55 (1.46)	0.99	0.97	1.00	0.14	0.40
RMS Acc VT [m/s²]	3.12 (0.95)	3.09 (1.01)	0.96	0.90	0.98	0.20	0.54
Dynamic Instability
NRMS Acc AP [-]	0.65 (0.10)	0.68 (0.17)	0.73	0.35	0.89	0.07	0.19
NRMS Acc ML [-]	0.72 (0.16)	0.72 (0.17)	0.96	0.90	0.98	0.03	0.09
NRMS Acc VT [-]	0.92 (0.08)	0.92 (0.08)	0.95	0.88	0.98	0.02	0.05
LyE Step AP [-]	0.64 (0.14)	0.69 (0.17)	0.84	0.61	0.93	0.06	0.17
LyE Step ML [-]	0.71 (0.19)	0.77 (0.23)	0.93	0.72	0.97	0.06	0.16
LyE Step VT [-]	0.80 (0.15)	0.83 (0.15)	0.87	0.68	0.95	0.05	0.15
LyE Stride AP [-]	0.44 (0.09)	0.47 (0.12)	0.80	0.54	0.92	0.05	0.13
LyE Stride ML [-]	0.47 (0.14)	0.52 (0.17)	0.92	0.76	0.97	0.04	0.12
LyE Stride VT [-]	0.56 (0.10)	0.59 (0.11)	0.82	0.58	0.93	0.04	0.12
Turn time [s]	2.71 (1.89)	3.02 (2.79)	0.96	0.90	0.98	0.49	1.36
Turning velocity [deg/s]	13.67 (3.19)	13.96 (3.01)	0.94	0.85	0.97	0.78	2.16
Symmetry
HR AP [-]	1.97 (0.46)	1.94 (0.45)	0.77	0.43	0.90	0.22	0.60
HR ML [-]	2.29 (0.28)	2.36 (0.46)	0.64	0.15	0.85	0.22	0.62
HR VT [-]	2.74 (0.52)	2.76 (0.59)	0.91	0.78	0.96	0.17	0.46
Improved HR AP [-]	76.50 (8.09)	75.59 (8.99)	0.89	0.73	0.95	2.89	8.02
Improved HR ML [-]	80.98 (4.49)	81.16 (6.05)	0.84	0.61	0.93	2.11	5.84
Improved HR VT [-]	88.89 (5.12)	88.39 (6.16)	0.93	0.84	0.97	1.47	4.07

AP: Anteroposterior; ML: Mediolateral; VT: Vertical; Njerk: Normalized Jerk; RMS: Root Mean Square; NRMS: Normalized Root Mean Square; LyE: Lyapunov Exponent; HR: Harmonic Ratio.