Table 4 Results of statistical analysis of the agreement between the feetme insoles and motion capture system coupled to force platform measurements. Kinetic parameters.

From: Comparison of feetme insoles with a motion capture system coupled to force plates for assessing gait and posture

Parameters

N

Unit

Mean

Std

Bias

Limits of agreement

Pearson’s correlation

MAE

MRAE (%)

ICC (2,1)

ICC high

ICC low

r2

P-value TOST

P-value Levene

Dynamic uCoP ML

11,515

cm

2.60

1.04

-0.5

[-2.3, 1.3]

0.50

0.8

31

0.40

0.52

0.23

0.25

< 0.001

< 0.001

Dynamic uCoP AP

11,515

cm

22.2

3.64

-0.9

[-5.1, 3.3]

0.81

1.8

8

0.78

0.84

0.69

0.66

< 0.001

< 0.001

Heelmax load

11,515

N

790.2

205.4

28.9

[-166.9, 224.8]

0.88

81.9

9

0.87

0.89

0.84

0.77

< 0.001

0.44

Toemax load

11,515

N

793.2

201.9

-11

[-188.3, 166.3]

0.89

68.6

11

0.89

0.90

0.88

0.80

< 0.001

< 0.001

  1. Abbreviations: AP = anterior-posterior direction; ICC (2,1) = intraclass correlation coefficient (two-way random effects, absolute agreement, single rater/measurement); MAE = mean absolute difference; ML = medial-lateral direction; MRAE = mean relative absolute difference; N = number of measurements for each parameter; r2 = coefficient of determination; Std = standard deviation; TOST = two one-sided t tests; uCoP, unilateral center of pressure.
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