Table 1

Mean [SE] nonlinear elastic compressive and shear data parameters

U

C

p*

Peak compressive strain (%)

39.99 [3.6e-3]

39.98 [6.7e-3]

0.3

Peak compressive stress (kPa)

31.6 [6.3]

12.9 [4.5]

0.0002

Compressive modulus (kPa)

267 [72]

87 [35]

0.0031

Compressive energy loss (%)

38.2 [1.4]

37.8 [1.6]

0.7

Peak shear strain (%)

80.9 [1.6e-2]

80.9 [1.6e-2]

0.3

Peak shear stress (kPa)

9.0 [1.5]

9.9 [2.0]

0.6

Initial shear modulus (kPa)

58 [19]

61 [16]

0.8

Toe shear modulus (kPa)

5.4 [0.7]

5.3 [0.9]

0.9

Final shear modulus (kPa)

21.9 [4.0]

25.4 [5.6]

0.3

Shear energy loss (%)

48.0 [4.2]

42.8 [4.2]

0.2

p<0.05 indicates significance for linear mixed effects regression; U = previously untested, C = compression tested.

Pai et al. Journal of Foot and Ankle Research 2012 5(Suppl 1):P14   doi:10.1186/1757-1146-5-S1-P14