Table 1.

Subject characteristics

Assessment	Mean	(S.D.)	Range
Cognitive Assessments
MMSE (maximum 30)	26.7	(2.7)	24–30
Digit symbol
Substitution	33.0	(8.3)	19–45
Copy (time, s)	139.8	(45.0)	83–220
Copy (errors)	0.5	(0.8)	0–2
Backward digit span (maximum 14)	5.2	(1.6)	3–8
Digit ordering (maximum 24)	12.2	(3.9)	7–19
Vocabulary (maximum 70)	53.1	(10.7)	30–68
Stroop test
Color XXX	50.8	(17.4)	21–72
Color words	24.7	(11.1)	9–39
Gait speed (m/s)	0.78	(0.38)	0.15–1.11
Fugl-Meyer (maximum 34)	24.2	(5.3)	14–30

MMSE denotes Mini-Mental State Examination.