Figure 5.
Graphical representation of the outcomes of a 30-s CST. The blue line represents the evolution of the thigh angle over time, computed from the estimation of the gravity components (it is not computed by the device). The green line represents the estimation of the thigh angle used in the device; it is directly computed from raw readings from the accelerometer. The red line represents the output of applying hysteresis thresholding to the green signal.