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Table 2 Plantar pressure results – mean (SD)

From: The effect of shoe toe box shape and volume on forefoot interdigital and plantar pressures in healthy females

 

Barefoot

Round

Square

Point

pvalue

Mean peak pressure (N/cm2)

     

     Heel – medial

19.29(7.42)§

23.81(9.56)§

22.47(11.09)§

38.36(8.24)

0.000*

     Heel – lateral

16.71(5.14)‡§

17.45(7.08)‡§

24.9(7.45)†§

32.21(7.92)†‡

0.000*

     Midfoot

8.35(5.36)†§

6.75(2.49)

8.29(4.01)

3.28(1.87)

0.000*

     Metatarsal head 1

19.06(8.54)†‡§

17.98(6.53)

15.05(5.93)

10.01(6.49)

0.000*

     Metatarsal head 2

18.11(10.97)

18.89(10.23)

20.06(7.79)

21.79(8.23)

0.195*

     Metatarsal head 3

17.16(9.3)†§

18.85(11.7)

19.47(6.31)

24.06(10.61)

0.005*

     Metatarsal head 4

17.79(7.57)†§

23.99(12.99)‡§

11.6(4)†§

14.32(5.84)†‡

0.000*

     Metatarsal head 5

7.53(6.14)‡§

16.67(12.74)‡§

9.28(4.97)

5.41(2.99)

0.000*

     Toe 1

24.4(18.8)

24.66(15.35)

12.27(6.28)§

10.77(6.04)

0.000**

     Toes 2-5

11.53(15.45)‡§

15.78(15.09)

5.92(7.37)†§

2.63(2.48)

0.000**

Mean time to peak pressure (ms)

     

     Heel – medial

136.29(31.59)

139.4(97.94)

133.5(75.69)

115.63(64.6)†§

0.000*

     Heel – lateral

126.71(41.41)‡§

129.67(62.78)‡§

144.91(85.3)†§

140.23(68.54)†‡

0.000*

     Midfoot

234.9(63.92)†‡

290.98(97.43)

320.67(83.24)

234.51(66.64)

0.000*

     Metatarsal head 1

490.82(139.71)†‡

524.37(113.83)

512.25(67.26)

486.85(51.09)

0.000*

     Metatarsal head 2

516.9(109.73)

515.53(109.21)

517.72(61.9)

517.59(45.53)

0.08*

     Metatarsal head 3

497.34(108.83)†

510.81(104.8)

479.37(66.1)

506.85(52.53)

0.002*

     Metatarsal head 4

452.06(11.45)†‡

462.91(104.35)

448.29(75.16)

471.97(67.76)†‡

0.001*

     Metatarsal head 5

350.09(174.91)‡§

368.74(114.85)‡

404.17(85.18)

402.79(92.98)

0.000*

     Toe 1

595.71(116.74)†

613.24(125.25)

525.59(144.43)

539.71(70.58)

0.006**

     Toes 2-5

552.94(98.03)§

490.09(179.56)

480.1(143.19)§

510.43(93.12)

0.026**

Mean total contact time (ms)

     

     Heel – medial

371.8(64.32)

410.31(106.4)

394.5(74.82)

387.83(68.15)

0.36*

     Heel – lateral

365.9(62.3)

383.87(90.66)

395.04(77.02)

387.89(61.1)

0.109*

     Midfoot

404.1(65.24)

421.81(82.7)

424.4(67.3)

388.54(79.95)

0.08*

     Metatarsal head 1

491.3(112.34)

485.9(79.21)

479.26(84.9)

486.84(51.09)

0.42*

     Metatarsal head 2

504.25(136.3)

514.5(108.83)

489.79(112.26)

518(69.69)

0.52*

     Metatarsal head 3

533.74(106.8)

508.4(137.4)

525.09(62.56)

537.86(68.17)

0.24*

     Metatarsal head 4

522.72(139.9)

547.2(106.3)

518.58(53.55)

540.45(56.58)

0.188*

     Metatarsal head 5

502.61(96.28)

492.71(140.8)

484.95(82.6)

478.84(63.91)

0.79*

     Toe 1

299.4(83.75)†§

248.72(71.94)

279(115.1)

392.48(116.45)

0.000**

     Toes 2-5

419.94(208.46)†§

310.47(182.6)

453.87(214)§

281.64(99.52)

0.003**

Pressure–time integral (N/cm2/ms)

     

     Heel – medial

4.24(1.84)

5.35(2.31)

4.8(2.37)

8.38(2.91)

0.309*

     Heel – lateral

3.58(1.26)

3.68(1.37)

5.42(1.71)

7.26(2.24)

0.642*

     Midfoot

2.01(1.42)†§

1.73(0.77)

2.19(1.07)

0.78(0.51)

0.000*

     Metatarsal head 1

3.99(1.58)

3.71(1.58)

3.24(1.54)

2.17(1.55)

0.043*

     Metatarsal head 2

4.27(2.79)

3.99(2.35)

4.31(2.02)

5.1(2.07)

0.999*

     Metatarsal head 3

4.04(2.11)

4.37(3.25)

4.97(1.95)

5.91(3.22)

0.06*

     Metatarsal head 4

5.18(2.66)

6.59(4.23)

2.97(1.15)

3.78(1.91)

0.396*

     Metatarsal head 5

2.18(2.04)

2.32(3.39)

2.54(1.52)

1.31(0.85)

0.462*

     Toe 1

3.08(2.39)‡§

2.67(1.64)

1.24(0.82)

1.76(1.11)

0.001**

     Toes 2-5

1.37(1.38)

1.48(1.57)

4.09(1.18)†§

0.37(0.33)

0.002**

  1. * ANOVA.
  2. ** Friedman test.
  3. † significantly different to round.
  4. ‡ significantly different to square.
  5. § significantly different to point.