Construct | Parameter | Unit | Definition |
---|---|---|---|
Efficiency | Movement Time (MT) | Seconds | Time elapsed between movement onset and enda |
Accuracy | Trajectory Directness (CurvI) | Â | Ratio of the actual movement trajectory between movement initiation and final position, and the straight line joining those two eventsa |
Speed | Peak Velocity (Vmax) | cm/s | Maximum velocitya |
Planning | Time to Peak Velocity (T%Vmax) | Percentage | Time to achieve maximum velocity, expressed as percentage of the movement durationa |
Smoothness | Number of Velocity Peaks (NVP) | Â | Number of peaks of the movement velocity trajectory |
Log Dimensionless Jerk (LDJ) | Â | Negative logarithm of the dimensionless jerk metric | |
Joint Range of Motion | Range Shoulder Flexion/Extension (ShFE) | Degrees | Range of the shoulder flexion/extension angle between movement onset and end |
Range Shoulder Abduction/Adduction (ShAA) | Degrees | Range of the shoulder abduction/adduction angle between movement onset and end | |
Range Elbow Flexion/Extension (ElFE) | Degrees | Range of the elbow flexion/extension angle between movement onset and end | |
Trunk Movement | Range Thorax (Th) | Degrees | Angle of rotation of the shoulders in respect to a projected line between the shoulder markers |
Torso Excursion (TExc) | cm | Displacement of the trunk, measured with the clavicle marker |