IMUs	Inertial Measurement Units
ECS	Earth Coordinate System
SCS	Sensor Coordinate System
BCS	Body Coordinate System
SF	Shoulder Flexion Angle
EF	Elbow Flexion Angle
KF	Knee flexion Angle
FF	Foot Flexion Angle
SFl	Left Shoulder Flexion Angle
SFr	Right Shoulder Flexion Angle
EFl	Left Elbow Flexion Angle
EFr	Right Elbow Flexion Angle
CF	Complementary Filter
GD	Gradient Descent
EKF	Externed Kalman Filter
IMC	Inertial Motion Capture System
OMC	Optical Motion Capture System
SVM	Support Vector Machine
KNN	K-Nearest Neighbor
ROM	Range of Motion
MAX	Maximum Value
MIN	Minimum Value
MEAN	Mean Value
SD	Standard Deviation
ROC	Receiver Operating Characteristic
PRC	Precision Recall Curve
AUC	Area Under the Curve