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Table 2 Reliability scores of isometric pronator and supinator muscle strength, peak plantar pressures and muscle activities

From: Reliability of isometric subtalar pronator and supinator strength testing

 

Day 1

  

Day 2

  

Reliability

Learning effects

 

Mean 1

SD 1

Het_R2

Mean 2

SD 2

Het_R2

RMSE

MDC (abs)

MDC %

Bias (abs)

LoA (abs)

LoA (%)

t-test (P-Value)

Pronation (no FB)

             

Pronator PT (Nm)

17.5

2.7

0.22

18.5

2.6

0.06

1.0

2.9

16.2

(-0.9)

3.5

19.6

<0.05

PP med FF (kPa)

54.3

16.1

0.22

59.2

15.5

0.00

6.6

18.2

32.3

(-4.9)

23.9

42.1

0.17

IEMG PL (%)

134.9

52.8

0.14

129.5

48.4

0.13

14.4

39.9

30.3

41.4

81.1

61.4

0.64

IEMG TA (%)

114.0

27.3

0.18

111.3

26.7

0.11

7.5

20.9

18.5

2.7

19.1

33.2

0.59

Pronation (FB)

             

Pronator PT (Nm)

19.0

2.4

0.00

19.1

2.4

0.06

0.8

2.3

11.9

(-0.1)

3.4

17.7

0.76

PP med FF (kPa)

59.0

18.3

0.03

62.3

21.5

0.12

6.1

17.0

28.1

(-3.3)

21.6

35.6

0.30

IEMG PL (%)

130.4

41.6

0.13

129.6

48.4

0.13

13.6

37.6

28.9

0.8

65.7

50.5

0.93

IEMG TA (%)

108.0

21.7

0.00

105.0

20.0

0.00

6.8

18.9

17.7

3.0

19.1

17.9

0.25

Supination (no FB)

             

Supinator PT (Nm)

13.3

5.7

0.07

14.8

6.1

0.12

1.0

2.81

20.0

2.4

4.6

32.9

<0.05

PP lat. FF (kPa)

103.3

39.7

0.03

109.1

31.8

0.02

10.2

28.2

26.6

(-5.5)

34.2

32.2

0.22

IEMG PL (%)

80.0

54.7

0.45

75.5

34.7

0.32

10.9

30.1

38.7

0.8

61.5

79.1

0.68

IEMG TA (%)

39.0

25.3

0.46

37.9

20.3

0.26

5.5

15.2

39.6

0.6

27.5

71.6

0.99

Supination (FB)

             

Supinator PT (Nm)

14.7

5.5

0.22

15.4

5.6

0.03

0.8

2.2

14.9

(-0.6)

3.9

26.0

0.17

PP lat. FF (kPa)

126.5

33.7

0.02

128.0

30.9

0.00

9.0

25.0

19.6

(-1.6)

17.7

27.3

0.74

IEMG PL (%)

82.6

41.6

0.17

83.3

40.3

0.26

11.2

31.0

37.4

24.2

47.4

57.1

0.91

IEMG TA (%)

32.9

22.6

0.44

32.8

17.2

0.27

3.9

10.9

32.9

(-0.1)

22.1

67.2

0.97

  1. Legend: SD, standard deviation; MDC, minimum detectable change; MDC %, minimum detectable change as a percentage of session means; LoA, limits of agreement; Het_R2, Index of heteroscedasticity, FB, feedback; PT, peak torque; PP med. /lat. FF, peak plantar pressure under medial/lateral forefoot; IEMG, integrated EMG; PL, peroneus longus muscle; TA, tibialis anterior muscle.