Table 1.

Demographic, clinical, and walking trial information of all subjects

	Controls	PD subjects
Number of subjects	17	16
Gender (F : M)	6 : 11	8 : 8
Age (SD) (years)	61.82 (8.70)	64.27 (6.92)
Dominant hand (Right : Left)	12 : 5	16 : 0
Duration of illness (SD) (years)	N/A	2.47 (3.01)
Hoehn & Yahr (SD) Stage	N/A	1.81 (0.65)
LEDD (SD) (milligram)	N/A	520.88 (239.39)
Most Affected Side (Right : Left)	N/A	7 : 9
Medication status	N/A	“OFF”	“ON”
UPDRS-III scores (SD)	4.2 (4.6)	20.0 (7.1)	14.0 (5.7)
Number of subjects who
Completed 0.5 miles (2 laps)	6	7	6
Completed 0.25 miles (1 lap)	11	6	6
Completed 0.17 miles (2/3 lap)	0	3	4

Abbreviations – LEDD: Levodopa equivalent daily dose; UPDRS: Unified Parkinson's disease Rating Scale;