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. 2023 Feb 13;23(4):2104. doi: 10.3390/s23042104

Table 2.

The definitions of gait parameters.

Gait Parameter Definition RMSE (Validated in [24])
Stride length (SL) The height-normalized linear displacement between two adjacent ankle landing points. 2.3 m
Gait cycle duration (GD) The duration between two adjacent HS events. 14 ms
Percentage swing phase (PSP) The duration between adjacent TO event and HS event divided by GD. no validated
Max ankle height (MH) The maximum value of height-normalized ankle displacement in V-axis direction during the gait cycle. 1.0 cm
Range of lateral displacement (RL) The range of height-normalized displacement along the L-axis direction during the gait cycle. no validated
Range of shank Z-axis rotation (RSZ) The range of the integration of IMU Z-axis angular velocity during the gait cycle. no validated
Range of shank Y-axis rotation (RSY) The range of the integration of IMU Y-axis angular velocity during the gait cycle. no validated
Range of shank X-axis rotation (RSX) The range of the integration of IMU X-axis angular velocity during the gait cycle. no validated
Max ankle progressive velocity (MPV) The maximum value of height-normalized ankle velocity in P-axis direction during the gait cycle. 3.0 cm/s
Max ankle vertical velocity (MVV) The maximum value of height-normalized ankle velocity in V-axis direction during the gait cycle. no validated
Max shank Z-axis angular velocity (MSV) The maximum value of IMU z-axis angular velocity during the swing phase. no validated
Ankle displacement at MH (MHD) The height-normalized ankle displacement in P-axis direction when MH occurs. 1.9 cm