Age Matters: Objective Gait Assessment in Early Parkinson’s Disease Using an RGB-D Camera

Table 3

Spatiotemporal gait parameters obtained from the e-motion capture system in the PD patient group and the healthy subjects group.

Gait variable	Speed (m/s)			Swing time (s)			Stance time (s)
Age/group	PD patients	Healthy subjects	value	PD patients	Healthy subjects	value	PD patients	Healthy subjects	value
All ages (n = 60)	0.86 (IQR 0.73–0.93)	0.94 (IQR 0.86–1.14)	<0.001	0.90 (IQR 0.80–1.09)	0.81 (IQR 0.71–0.92)	0.002	1.29 (IQR 1.13–1.57)	1.16 (IQR 0.95–1.27)	<0.001
40 to 59 years (n = 16)	0.89 (IQR 0.80–1.04)	0.97 (IQR 0.89–1.12)	0.10	0.86 (IQR 0.71–0.94)	0.77 (IQR 0.70–0.84)	0.19	1.22 (IQR 1.07–1.40)	1.1 (IQR 0.99–1.27)	0.13
60 to 66 years (n = 15)	0.82 (IQR 0.75–0.86)	1.08 (IQR 0.95–1.29)	<0.001	0.90 (IQR 0.86–1.06)	0.75 (IQR 0.7–0.81)	<0.001	1.38 (IQR 1.26–1.54)	1.04 (IQR 0.75–1.19)	<0.001
67 to 75 years (n = 17)	0.85 (IQR 0.56–0.89)	0.91 (IQR 0.80–1.28)	0.004	0.91 (IQR 0.84–1.23)	0.84 (IQR 0.680.97)	0.05	1.35 (IQR 1.22–2.06)	1.26 (IQR 0.78–1.38)	0.05
76 to 88 years (n = 12)	0.89 (IQR 0.52–1.03)	0.87 (IQR 0.77–0.91)	0.72	0.88 (IQR 0.72–1.47)	0.92 (IQR 0.901.05)	0.60	1.21 (IQR 1.08–2.14)	1.22 (IQR 1.17–1.3)	0.93