Table 2.

Comparison of mean values obtained at each assessment, as well as the linear agreement (Pearson r) of each variable between assessments.

Variable	Assessment 1 Mean (SD)	Assessment 2 Mean (SD)	P value	Test-retest correlation (r)
Gait performance without cognitive task completion (single-task)
Average gait speed (m/s)	0.98 (0.21)	0.96 (0.19)	0.60	0.89
Cadence (steps/min)	105.2 (12.6)	102.1 (10.7)	0.40	0.43
Step length (m)	0.55 (0.10)	0.55 (0.09)	0.88	0.78
Step time (s)	0.58 (0.08)	0.60 (0.06)	0.52	0.85
Average trial distance (m)	12.2 (3.4)	13.5 (2.3)	0.03	0.72
Gait performance with cognitive task completion (dual-task)
Average gait speed (m/s)	0.92 (0.22)	0.89 (0.22)	0.37	0.88
Cadence (steps/min)	104.1 (11.5)	98.7 (13.1)	0.03	0.60
Step length (m)	0.52 (0.09)	0.52 (0.09)	0.34	0.77
Step time (s)	0.58 (0.07)	0.63 (0.09)	0.05	0.52
Average trial distance (m)	12.4 (3.6)	13.3 (2.6)	0.25	0.49
Cognitive performance while standing (single-task)
Response time (ms)	1396 (165)	1300 (132)	0.03	0.50
Response accuracy (% correct)	82.3% (17.9%)	84.6% (20.1%)	0.64	0.52
Response rate (responses/min)	12.0 (3.9)	11.3 (4.5)	0.41	0.64
Response time: congruent cues (ms)	1349 (167)	1231 (108)	0.02	0.23
Response accuracy: congruent cues (% correct)	91.9% (11.6%)	94.7% (12.3%)	0.40	0.45
Response time: incongruent cues (ms)	1425 (178)	1368 (175)	0.17	0.62
Response accuracy: incongruent cues (% correct)	70.6% (25.4%)	77.7% (28.4%)	0.30	0.56
Cognitive performance during gait (dual-task)
Response time (ms)	1281 (142)	1327 (118)	0.05	0.79
Response accuracy (% correct)	89.4% (15.9%)	85.8% (20.2%)	0.23	0.81
Response rate (responses/min)	13.9 (5.0)	13.6 (4.6)	0.83	0.50
Response time: congruent cues (ms)	1238 (153)	1279 (108)	0.11	0.76
Response accuracy: congruent cues (% correct)	94.8% (9.7%)	98.7% (4.2%)	0.18	0.18
Response time: incongruent cues (ms)	1361 (194)	1399 (185)	0.44	0.44
Response accuracy: incongruent cues (% correct)	84.4% (27.6%)	76.1% (32.7%)	0.18	0.69