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Table 6 Mean values (SD) and percentage change for the medial and lateral heel at week 4 (N = 30)

From: The effect of customised and sham foot orthoses on plantar pressures

Medial heel

 

Peak pressure (kPa)

Maximum force (%BW)

Contact area (cm2)

Insert

Mean (SD)

% change

p-value

Mean (SD)

% change

p-value

Mean (SD)

% change

p-value

Shoe only (control)

220.8 (54.0)

n/a

n/a

38.6 (6.9)

n/a

n/a

19.7 (1.8)

n/a

n/a

Customised foot orthosis

190.8 (37.2)

−14%*^

<0.001

36.8 (6.4)

−5%

0.072

20.0 (1.7)

+2%

0.292

Contoured polyethylene

211.5 (46.8)

−4%#†+

0.237

36.9 (6.3)

−4%

0.132

19.7 (1.7)

0%

1.000

Contoured EVA

192.8 (45.2)

−13%*^

<0.001

35.6 (6.4)

−8%*

<0.001

19.9 (1.7)

+1%

0.229

Flat EVA

198.8 (42.9)

−10%*^

<0.001

36.7 (6.7)

−5%*

0.008

19.9 (1.7)

+1%

0.229

Lateral heel

 

Peak pressure (kPa)

Maximum force (%BW)

Contact area (cm 2 )

Insert

Mean (SD)

% change

p -value

Mean (SD)

% change

p -value

Mean (SD)

% change

p -value

Shoe only (control)

221.2 (53.9)

n/a

n/a

38.3 (7.1)

n/a

n/a

19.4 (1.9)

n/a

n/a

Customised foot orthosis

206.4 (44.6)

−7%

0.444

41.1 (7.1)

+7%*+

0.015

19.6 (1.8)

+1%

0.455

Contoured polyethylene

216.0 (45.6)

−2%†+

1.000

40.0 (6.8)

+4%+

0.166

19.6 (1.8)

+1%

0.455

Contoured EVA

197.6 (41.4)

−11%*^

<0.001

38.0 (5.9)

−1%#^

1.000

19.5 (1.8)

+1%

1.000

Flat EVA

201.8 (42.7)

−9%*^

<0.001

39.4 (7.1)

+3%

0.745

19.6 (1.8)

+1%

0.865

  1. * Mean difference significant at the 0.05 level (Bonferroni adjusted) compared to the shoe only condition.
  2. # Mean difference significant at the 0.05 level (Bonferroni adjusted) compared to the customised orthosis.
  3. † Mean difference significant at the 0.05 level (Bonferroni adjusted) compared to the flat EVA sham orthosis.
  4. + Mean difference significant at the 0.05 level (Bonferroni adjusted) compared to the contoured EVA sham orthosis.
  5. ^ Mean difference significant at the 0.05 level (Bonferroni adjusted) compared to the contoured polyethylene orthosis.