Fig. 6

Relationship between FSA, angle at peak speed, and MAS values. The graph shows the relationship between FSA and the angle at peak flexion speed with participants associated with their MAS scores (see color code) using the IMU-based system. The dotted line represents the margin of the ellipse of variation computed over the control data using 2xSD. Data from both legs and days of test have been included. The abscissa shows the FSA values in degrees, and the ordinate shows the angle at peak flexion speed in degrees. The gray shaded area indicates the range of FSA values obtained in controls. The light red region includes FSA values associated only to individuals with any degree of spasticity (MAS > 0). The yellow region represents a region in which there is not complete agreement between the presence of spasticity detected by the clinical exam and FSA values. Note that this corresponds to individuals with MAS < 2