Table 2.

Severity of Freezing of Gait (FOG) During FOG-Provoking Protocol Off and On Medication^a

Medication State	Parameter	4-m Walk	TUG, Single Task	TUG, Dual Task	Turning Task, Single Task	Turning Task, Dual Task	Hot Spot, Narrow Space	Personal Hot Spot	Provoking Protocol, All Tasks
Off	Median %TF (25%–75% percentiles)	0.0 (0.0–5.7)	0.7 (0.0–8.4)	0.0 (0.0–8.7)	21.2 (4.9–58.6)	27.3 (1.1–70.7)	2.1 (0.0–25.4)	13.7 (1.0–35.2)	25.5 (8.6–40.5)
	No. of FOG episodes	14	20	42	137	162	27	105	507
	No. of participants with FOG	9	14	12	24	21	15	21	28
On	Median %TF (25%–75% percentiles)	0.0 (0.0–0.0)	0.0 (0.0–0.0)	0.0 (0.0–0.0)	3.8 (0.0–51.1)	7.6 (0.0–48.1)	0.0 (0.0–0.0)	0.0 (0.0–5.4)	4.1 (0.0–24.3)
	No. of FOG episodes	2	5	7	95	80	6	20	215
	No. of participants with FOG	2	4	5	14	16	6	12	18

^a %TF = percentage of time spent frozen; TUG = Timed “Up & Go” Test.