Table 1.

Clinical characteristics of the subjects.

Characteristics	PD	Normal control
Age, years	68.6 ± 8.5	64.5 ± 6.6
Male/female	13/27	5/6
MMSE	25.2 ± 4.3	28.3 ± 1.6
Symptom duration, years	4.1 ± 4.0
UPDRS part III motor score	27.2 ± 14
FOG-Q total score	8.6 ± 6.2

FOG-Q: Freezing of Gait Questionnaire; MMSE: Mini Mental State Examination; UPDRS: Unified Parkinson's Disease Rating Scale. Data are given as mean ± standard deviation values.