Method for Wearable Kinematic Gait Analysis Using a Harmonic Oscillator Applied to the Center of Mass
Table 4
The six different approaches to define the amplitude hCOM threshold that characterize the six different processing modes.
Input to the model
Mode index
Definition of the amplitude of the hCOM threshold
Anthropometric step length
0
Median of twice the absolute value of the COM amplitude trend multiplied by a coefficient depending on the average walking speed
Expected S
1
Expected hCOM according to the following formula:
Expected S
2
The same as in mode 1 increased by 20%
Expected S
3
The product of hCOM obtained by the linear interpolation and a set of weighting coefficients depending on speeds, matching the value of COM displacement measured by Orendurff et al. at different speeds [12], with the expected COM displacement
Anthropometric step length
4
The COM amplitude evaluated by Lulic and Muftic [13] with the weights used in mode 3
