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Table 1 Plantar pressure distribution and body sway (mean value or median, tolerance range, confidence interval).

From: Standard reference values of the postural control in healthy female adults aged between 31 and 40 years in Germany: an observational study

Plantar pressure distribution and body sway

Mean values/medians

Tolerance range

Confidence interval

Lower limit

Upper limit

Left limit

Right limit

Left forefoot (%)

19.64

9.71

29.56

18.68

20.60

Right forefoot (%)

15.00

6.56

28.30

13.33

16.33

Left rearfoot (%)

31.84

16.87

46.82

30.40

33.29

Right rearfoot (%)

32.82

19.66

45.97

31.54

34.09

Left foot (%)

51.46

37.02

65.90

50.06

52.85

Right foot (%)

48.54

34.10

62.97

47.14

49.93

Forefoot (%)

33.84

20.68

54.73

31.67

37.33

Rearfoot (%)

66.16

45.27

79.33

62.67

68.33

Body sway in sagittal plane (mm)

12.00

5.45

23.44

11.00

14.00

Body sway in frontal plane (mm)

8.17

3.33

19.08

7.67

9.33

Ellipse area (cm2)

0.72

0.15

3.69

0.54

0.89

Ellipse width (cm)

0.66

0.30

1.77

0.61

0.78

Ellipse heights (cm)

0.33

0.13

0.71

0.30

0.37

Ellipse angle (°) (all directions)

 7.01

 53.01

39.00

 11.50

 2.59

Ellipse angle (°) (left forefoot to right rearfoot)

19.34

59.21

0.44

22.52

16.16

Ellipse angle (°) (right forefoot to left rearfoot)

12.75

0.09

59.09

9.00

16.33

  1. Values not normally distributed are printed in italics