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Table 3 Values for the group mean errors ( me ), mean standard deviation of the subject errors ( sde ), mean absolute errors ( mae ) and the percent of it ( %mae ) in estimating gait events (IC and FC) and temporal parameters (stride, step, stance and swing time) for the four groups (healthy elderly – E, hemiparetic – H, Parkinson’s disease – P and choreic – C)

From: Estimation of step-by-step spatio-temporal parameters of normal and impaired gait using shank-mounted magneto-inertial sensors: application to elderly, hemiparetic, parkinsonian and choreic gait

p Group me(sde) [ms] mae[ms] %mae
V1 V2 V1 V2 V1 V2
IC E 2 (10) 9 (10) 10 12 - -
H 0 (17) 3 (15) 17 15 - -
P 11 (11) 22 (9) 15 22 - -
C 7 (13) 7 (11) 12 13 - -
FC E 7 (15) 16 (9) 20 19 - -
H 11 (18) 13 (17) 21 21 - -
P 5 (18) 0 (15) 22 19 - -
C 2 (14) 6 (13) 18 16 - -
Stride time E 0 (14) 0 (13) 10 10 1% 1%
H 0 (17) 0 (16) 13 12 1% 1%
P 1 (15) 0 (13) 12 10 1% 1%
C 0 (17) 0 (15) 13 12 1% 1%
Step time E 0 (15) 0 (14) 12 12 2% 3%
H 1 (26) 0 (22) 22 22 3% 4%
P 0 (15) 0 (14) 12 11 2% 2%
C 0 (18) 0 (16) 14 13 3% 3%
Stance time E 10 (19) 25 (13) 22 28 3% 5%
H 11 (11) 11 (22) 25 25 3% 3%
P 15 (20) 21 (18) 26 27 3% 4%
C 5 (18) 1 (17) 22 19 3% 3%
Swing time E 9 (19) 25 (13) 22 27 6% 8%
H 11 (23) 10 (22) 25 25 6% 6%
P 16 (21) 21 (18) 24 27 7% 8%
C 5 (19) 0 (17) 22 19 6% 5%