Crossing Virtual Doors: A New Method to Study Gait Impairments and Freezing of Gait in Parkinson’s Disease
Table 2
Characteristics of induced FOG episodes for each participant in the PD-f group as a function of door condition.
Participants
Door condition
% trials with an FOG episode
Mean duration of an FOG episode
Max duration of an FOG episode
Min duration of an FOG episode
PD-f1
No door
0
NA
NA
NA
Standard door
33
5.64 s ± 4.07 s
8.972 s
0.51 s
Narrow door
100
7.64 s ± 5.26 s
17.93 s
1.00 s
PD-f2
No door
0
NA
NA
NA
Standard door
0
NA
NA
NA
Narrow door
16
1.00 s ± 0.00 s
1.00 s
1.00 s
PD-f3
No door
0
NA
NA
NA
Standard door
0
NA
NA
NA
Narrow door
50
0.61 s ± 0.23 s
0.87 s
0.45 s
PD-f4
No door
16
0.85 s ± 0.00 s
0.85 s
0.85 s
Standard door
83
2.85 s ± 3.71 s
9.45 s
0.85 s
Narrow door
100
3.1 s ± 1.68 s
6.35 s
1.97 s
The results include percentage of trials in which patients experienced FOG; mean duration of these episodes (including standard deviation); and maximum and minimum duration of the episodes. NA indicates that no FOG episode was observed.
