Crossing Virtual Doors: A New Method to Study Gait Impairments and Freezing of Gait in Parkinson’s Disease

Table 1

Demographic information about the PD participants.

Participant	Age (years)	Gender	Years from diagnosis	Clinical state	UPDRS part III	FOG-Q
PD1	61	Female	7	On	10	0.33 (0.51)
PD2	77	Male	6	Off	29	0.66 (1.06)
PD3	64	Female	2	On	18	0.33 (0.52)
PD4	66	Female	4	On	37	0.5 (0.55)
PD5	50	Male	2	On	23	0.66 (1.03)
PD6	58	Male	7	On	27	0.66(1.03)
PD-f1	68	Female	6	Off	35	3.00 (0.63)
PD-f2	76	Male	5	On	28	3.16 (0.43)
PD-f3	59	Female	4	On	36	2.66 (0.81)
PD-f4	69	Male	6	Off	41	3.33 (0.51)

The clinical state is related to the effect of the medication: on = responding well to medication; off = not responding to medication. The results of the FOGQ are presented as the mean (SD) of all the results in the test. Participants PD1-6 = idiopathic PD group; PD-f1–f4 = PD participants that have experienced freezing in the past.