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Table 4 Reliability of strength related measurements during the endurance protocol

From: Shoulder muscle endurance: the development of a standardized and reliable protocol

Type of strength related measure

Muscular group

Group or subgroup

Strength/fatigue§

ICC

SEM

MDC90%

Average peak velocity (°/sec)

External Rotation

Whole group

142.3 ± 44.7

0.90

19.7

45.8

  

Low-standardized

118.5 ± 42.7*

0.88

19.0

44.2

  

High-standardized

158.1 ± 39.4*

0.85

18.9

44.0

 

Internal Rotation

Whole group

161.7 ± 48.9

0.90

22.0

51.1

  

Low-standardized

126.3 ± 41.7*

0.83

23.7

55.1

  

High-standardized

185.3 ± 38.3*

0.82

19.9

46.3

Total Work (J)

External Rotation

Whole group

897.1 ± 411.9

0.96

111.6

259.5

  

Low-standardized

781.0 ± 424.0

0.96

115.9

269.6

  

High-standardized

974.5 ± 394.7

0.96

95.2

221.4

 

Internal Rotation

Whole group

1230 ± 609

0.96

183.5

426.8

  

Low-standardized

952.4 ± 495.3

0.94

179.1

416.5

  

High-standardized

1415 ± 617

0.95

176.8

411.4

Work Fatigue (%)

External Rotation

Whole group

34.0 ± 18.9

0.83

11.5

26.8

  

Low-standardized

22.5 ± 20.8*

0.84

13.3

30.9

  

High-standardized

41.6 ± 13.2*

0.82

8.4

19.6

 

Internal Rotation

Whole group

35.7 ± 21.7

0.78

13.2

30.8

  

Low-standardized

25.7 ± 24.6*

0.78

14.7

34.1

  

High-standardized

42.3 ± 17.1*

0.81

12.6

29.2

  1. Abbreviations: ICC, intraclass correlation coefficient; SEM, standard errors of measurement; MDC, minimal detectable change. §From session 1, Mean ± 1 standard deviation.
  2. * Significant differences between low and high standardized subgroups.