Skip to Main Content
Table 1.

Magnitude of kinematic step parameters that change significantly during turning

Leg no.ParameterRSRCRSδ
O3     
   7* PEP.y (mm) -16.6 7.5 1.04 
   16* PEP.x (mm) -15.7 -5.3 0.68 
   17* Swing length (mm) 14.9 5.5 0.64 
   22* Stance length (mm) 14.3 5.7 0.56 
   24* Swing direction (degrees) -3.8 -21.4 0.51 
   25 Stance direction (degrees) 171.7 -16.4 0.50 
O2     
   10* AEP.y (mm) -16.2 3.1 0.86 
   19 Stance direction (degrees) -181.9 15.6 0.58 
   37* Swing direction (degrees) -3.5 16.7 0.37 
   38 Step period (s) 1.26 -0.32 0.36 
   43 Stance duration (s) 0.98 -0.27 0.31 
   46 Swing length (mm) 15.4 2.6 0.29 
   49 Stance length (mm) 15.1 2.5 0.25 
O1     
   3* AEP.y (mm) -16.4 11.5 1.41 
   8* Stance direction (degrees) -174.7 40.6 1.02 
   11* Swing direction (degrees) 5.5 39.9 0.82 
   14* AEP.x (mm) 19.2 3.6 0.77 
   28 Swing length (mm) 19.6 4.9 0.47 
   30 Step period (s) 1.44 -0.45 0.46 
   31* Stance length (mm) 18.8 5.5 0.45 
   31 Stance duration (s) 1.17 -0.43 0.45 
   35 PEP.y (mm) -18.1 -3.4 0.40 
   35 PEP.x (mm) 2.1 4.5 0.40 
I3     
   13* PEP.x (mm) -15.5 7.9 0.78 
   18 Stance length (mm) 14.2 -5.4 0.63 
   23 Swing length (mm) 14.8 -4.2 0.52 
   31 Step period (s) 1.16 0.68 0.45 
   38 PEP.y (mm) 15 2.2 0.36 
   40 Swing direction (degrees) 13.1 -28.9 0.32 
   43 Swing duty cycle 0.3 -0.08 0.31 
I2     
   6* PEP.y (mm) 15.7 -7 1.07 
   9* Stance direction (degrees) -170.9 41.6 0.99 
   12* Swing direction (degrees) 6.4 45 0.80 
   19* PEP.x (mm) -4.3 5.9 0.58 
   40 Swing length (mm) 15.6 -2.8 0.32 
   40* Stance length (mm) 14.9 -3.1 0.32 
   47 AEP.x (mm) 9.7 -1.4 0.28 
I1     
   1* Stance direction (degrees) -177 72.4 1.83 
   2* Swing direction (degrees) 3.6 70 1.45 
   4* AEP.x (mm) 19.7 -10.1 1.39 
   5* AEP.y (mm) 15.3 7.5 1.14 
   15* PEP.y (mm) 15 -7.2 0.70 
   19 Stance duty cycle 0.79 -0.12 0.58 
   25 PEP.x (mm) 0.4 4.6 0.50 
   27 Stance duration (s) 1.31 -0.48 0.48 
   28 Swing duty cycle 0.22 0.1 0.47 
   31 Step period (s) 1.6 -0.47 0.45 
   45 Swing length (mm) 21.1 -2.7 0.30 
   47 Stance length (mm) 20.3 -2.9 0.28 
Leg no.ParameterRSRCRSδ
O3     
   7* PEP.y (mm) -16.6 7.5 1.04 
   16* PEP.x (mm) -15.7 -5.3 0.68 
   17* Swing length (mm) 14.9 5.5 0.64 
   22* Stance length (mm) 14.3 5.7 0.56 
   24* Swing direction (degrees) -3.8 -21.4 0.51 
   25 Stance direction (degrees) 171.7 -16.4 0.50 
O2     
   10* AEP.y (mm) -16.2 3.1 0.86 
   19 Stance direction (degrees) -181.9 15.6 0.58 
   37* Swing direction (degrees) -3.5 16.7 0.37 
   38 Step period (s) 1.26 -0.32 0.36 
   43 Stance duration (s) 0.98 -0.27 0.31 
   46 Swing length (mm) 15.4 2.6 0.29 
   49 Stance length (mm) 15.1 2.5 0.25 
O1     
   3* AEP.y (mm) -16.4 11.5 1.41 
   8* Stance direction (degrees) -174.7 40.6 1.02 
   11* Swing direction (degrees) 5.5 39.9 0.82 
   14* AEP.x (mm) 19.2 3.6 0.77 
   28 Swing length (mm) 19.6 4.9 0.47 
   30 Step period (s) 1.44 -0.45 0.46 
   31* Stance length (mm) 18.8 5.5 0.45 
   31 Stance duration (s) 1.17 -0.43 0.45 
   35 PEP.y (mm) -18.1 -3.4 0.40 
   35 PEP.x (mm) 2.1 4.5 0.40 
I3     
   13* PEP.x (mm) -15.5 7.9 0.78 
   18 Stance length (mm) 14.2 -5.4 0.63 
   23 Swing length (mm) 14.8 -4.2 0.52 
   31 Step period (s) 1.16 0.68 0.45 
   38 PEP.y (mm) 15 2.2 0.36 
   40 Swing direction (degrees) 13.1 -28.9 0.32 
   43 Swing duty cycle 0.3 -0.08 0.31 
I2     
   6* PEP.y (mm) 15.7 -7 1.07 
   9* Stance direction (degrees) -170.9 41.6 0.99 
   12* Swing direction (degrees) 6.4 45 0.80 
   19* PEP.x (mm) -4.3 5.9 0.58 
   40 Swing length (mm) 15.6 -2.8 0.32 
   40* Stance length (mm) 14.9 -3.1 0.32 
   47 AEP.x (mm) 9.7 -1.4 0.28 
I1     
   1* Stance direction (degrees) -177 72.4 1.83 
   2* Swing direction (degrees) 3.6 70 1.45 
   4* AEP.x (mm) 19.7 -10.1 1.39 
   5* AEP.y (mm) 15.3 7.5 1.14 
   15* PEP.y (mm) 15 -7.2 0.70 
   19 Stance duty cycle 0.79 -0.12 0.58 
   25 PEP.x (mm) 0.4 4.6 0.50 
   27 Stance duration (s) 1.31 -0.48 0.48 
   28 Swing duty cycle 0.22 0.1 0.47 
   31 Step period (s) 1.6 -0.47 0.45 
   45 Swing length (mm) 21.1 -2.7 0.30 
   47 Stance length (mm) 20.3 -2.9 0.28 

The list includes all kinematic parameters that change during turning at least by 25% of their steady state s.d. (δ>0.25 corresponds well to significance level P<0.001 of a Mann–Whitney test).

Parameters are listed separately for each outer (O1–O3, left) and inner leg (I1–I3, right). No., assigned rank; RS,mean pre-stimulus period;(RCRS), the change of the mean amplitude between steady states; δ, standardised change that determines the rank. AEP, anterior extreme position; PEP, posterior extreme position; .x and .y, components of position vectors.

*

Parameters with significant fitting functions for their time course (see Table 2)

Close Modal

or Create an Account

Close Modal
Close Modal