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. Author manuscript; available in PMC: 2014 Sep 15.

Published in final edited form as: Mov Disord. 2013 Sep 15;28(11):1544–1551. doi: 10.1002/mds.25684

A. Receiver Operating Characteristics (ROC) curves for the ITUG parameters (out of 52 parameters measured) that best discriminate between healthy control subjects and untreated PD subjects from Zampieri et al., (10): peak arm velocity of the more affected side (MAS), cadence, peak trunk rotation velocity (yaw), and average turning velocity during 180 degree turn during gait (Adapted from Zampieri et al., JNNP 2010).

B. Stride time (extracted from angular velocities of the lower legs) for each stride (consisting of a left plus right step duration) during a 2-minute walk in a representative patient with PD OFF medication and in an age-matched healthy control subject. The coefficient of variation (CoV) is the standard deviation/mean of stride times for the 2-minute walk.

A. Receiver Operating Characteristics (ROC) curves for the ITUG parameters (out of 52 parameters measured) that best discriminate between healthy control subjects and untreated PD subjects from Zampieri et al., (10): peak arm velocity of the more affected side (MAS), cadence, peak trunk rotation velocity (yaw), and average turning velocity during 180 degree turn during gait (Adapted from Zampieri et al., JNNP 2010).

B. Stride time (extracted from angular velocities of the lower legs) for each stride (consisting of a left plus right step duration) during a 2-minute walk in a representative patient with PD OFF medication and in an age-matched healthy control subject. The coefficient of variation (CoV) is the standard deviation/mean of stride times for the 2-minute walk.