TABLE 3.

Means, SDs, ranges for the motor measures.

		Mean	SD	Range
Variability
	Single task stride regularity (NU)	0.75	0.1	0.28–0.92
	Single task stride time variability (%)	1.6	0.73	0.46–4.08
	Dual task stride regularity (NU)	0.6	0.19	0.09–0.92
	Dual task stride time variability (%)	2.73	2.39	0.45–16.43
Transition
	Sit to stand range anterior–posterior (g)	1.78	1.8	16–8.53
	Sit to stand jerk anterior–posterior (g/s)	2.47	5.02	−2:55 to 21:74
	Sit to stand pitch amplitude (°/s)	−61:87	38.37	−158:39 to 94:24
	Stand to sit pitch amplitude (°/s)	58.3	28.38	−42:14 to 133:93
Turn
	Turn yaw amplitude (°/s)	182.2	37.8	0.08–227.32
	Turn yaw duration (s)	1.63	0.44	0.74–3.40
Asymmetry
	Single task step regularity (NU)	0.59	0.15	0.23–0.87
	Single task step symmetry (NU)	0.77	0.23	0–1.39
	Dual task step symmetry (NU)	0.87	0.35	0.02–2.25
	Dual task step regularity (NU)	0.52	0.18	0.06–0.86
Rhythm
	Single task stride average (s)	1.12	0.1	0.86–1.41
	Dual task stride average (s)	1.23	0.16	0.88–1.73
Pace
	Single task stride length (m)	1.13	0.2	0.84–1.83
	Single task gait speed (m/s)	0.93	0.2	0.66–1.71
	Dual task stride length (m)	1.15	0.2	0.75–2.00
	Time up go anterior posterior duration (s)	10.8	2.11	6.27–18.27
	Time up go duration (s)	6.15	1.85	2.38–14.84

NU, no units; g, gravitational force per unit mass.