Predefined annotations of frequently used standardized gait tasks: TUG = Timed up and Go 360spin = alternatively turning 360 degrees on the spot FOG_Course = FOG provoking walking course as per Ziegler et al. 2010 TUG_180_R TUG_180_L TUG_540_R TUG_540_L TUG_Dual_180_R TUG_Dual_180_L TUG_180_R_Doorway TUG_180_L_Doorway 360spin_R 360spin_L FOG_Course FOG_Course_Dual Freezing of gait (FOG) can be characterized by the leg motions observed during the episode. As per Schaafsma et al. (2003). Eur J Neurol. vol 10(4), p. 391-398. -Shuffling = Very small shuffling steps and with minimal forward movement. -Trembling = Leg trembling but without effective forward motion -Akinesia = No observable motion of the legs Shuffling Trembling Akinesia FOG occurs more frequently during certain situations or task-demands: -SH = Start hestitation -Target = When approaching a target -180/360 = When turning -Doorway = When navigating a doorway or narrow passage -Dual = When performing a dual task while walking FOG FOG_SH FOG_Target FOG_180_R FOG_180_L FOG_360_R FOG_360_L FOG_Doorway FOG_Dual