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Table 3 Agreement among temporal and spatial gait parameters (n = 33)

From: Reliability of spatiotemporal and kinetic gait parameters determined by a new instrumented treadmill system

  Within day (S2 – S3) Between day (S1 – S2) Between day (S1 – S3)
  SEM Bias SEM Bias SEM Bias
  (SEM%) (± RC95%) (SEM%) (± RC95%) (SEM%) (± RC95%)
Global       
Velocity, m/s 0.07 −0.11 0.08 −0.03 0.10 −0.14
  (6) (0.21) (7) (0.23) (9) (0.26)
Cadence, steps/min 3.3 −4.4 3.4 −0.9 4.1 −5.4
  (3) (9.0) (3) (9.5) (4) (11.2)
Spatial       
Stride length, cm 5.1 −7.3 6.0 −1.9 6.6 −9.2
  (4) (14.2) (5) (16.7) (6) (18.4)
Step width, cm 0.5 0.4 0.9 −0.3 0.9 0.1
  (6) (1.4) (10) (2.5) (10) (2.4)
Step length, left, cm 2.7 −3.6 3.0 −1.1 3.4 −4.7
  (4) (7.4) (5) (8.4) (6) (9.4)
Step length, right, cm 2.6 −3.7 3.0 −0.8 3.3 −4.5
  (4) (7.1) (5) (8.4) (6) (9.1)
Foot rotation, left, º 1 0 1 0 1 0
  (14) (3) (14) (2) (14) (2)
Foot rotation, right, º 1 0 1 0 1 0
  (11) (3) (11) (2) (11) (3)
Temporal       
Stride time, ms 33 43 37 10 46 53
  (3) (91) (3) (103) (4) (128)
Step time, left, ms 17 22 19 4 24 26
  (3) (47) (3) (52) (4) (67)
Step time, right, ms 16 21 19 7 22 27
  (3) (45) (3) (51) (5) (62)
Stance phase, left, % 1 1 1 0 1 1
  (2) (2) (2) (2) (2) (2)
Stance phase, right, % 1 1 1 0 1 1
  (2) (2) (2) (2) (2) (2)
Swing phase, left, % 1 −1 1 0 1 −1
  (3) (2) (3) (2) (3) (2)
Swing phase, right, % 1 −1 1 0 1 −1
  (3) (2) (3) (2) (3) (2)
Single support, left, % 1 −1 1 0 1 −1
  (3) (2) (3) (2) (3) (2)
Single support, right, % 1 −1 1 0 1 −1
  (3) (2) (3) (2) (3) (2)
Double support, % 1 2 1 1 1 2
  (4) (3) (4) (4) (4) (4)
  1. SEM Standard error of measurement, SEM % Standard error of measurement expressed as percentage of mean, RC 95% 95% repeatability coefficient.