Validation of quantitative gait analysis systems for Parkinson’s disease for use in supervised and unsupervised environments

Table 5 Linear Fit Method [43] results comparing inertial-based 3D full-body kinematics and the optoelectronic criterion system. Outcome parameters are: α₁ (scaling factor), α₀ (scalar addition) and R². Average reconstruction error is given by the Mean Absolute Error (MAE)

		Hip Flexion	Hip Adduction	Hip Rotation	Knee Extension	Ankle Dorsiflexion	Arm Flexion	Arm Adduction	Arm Rotation	Elbow Flexion	Pronation	Wrist Flexion
α₁	Left	0,910	0,481	0,258	1117	0,816	0,395	0,653	0,622	0,668	0,933	0,593
α₁	Right	0,903	0,487	0,035	1144	0,841	0,478	0,611	0,527	0,810	1040	0,725
α₀	Left	− 1716	−0,467	− 6486	4331	0,051	7335	−11,419	− 3013	6777	− 8582	2687
α₀	Right	− 3101	0,948	− 5370	− 2399	1187	−11,133	9456	− 0,108	7735	13,084	0,122
R²	Left	0,919	0,737	0,514	0,957	0,860	0,798	0,875	0,770	0,868	0,685	0,524
R²	Right	0,913	0,561	0,608	0,950	0,789	0,843	0,856	0,683	0,887	0,678	0,534
MAE (°)	Left	2296	3297	3511	2950	2924	2990	2170	2339	1830	2368	2342
MAE (°)	Right	2504	3630	3901	2957	2946	2713	2248	2504	2118	2615	1944

ISSN: 1471-2377