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Table 5 Reliability of the strength measurements performed after the endurance protocol

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

Type of strength measurement Muscular group Group or subgroup Strength§ ICC SEM MDC90%
Maximal Isometric strength (kg) Flexion Whole group 17.2 ± 5.6 0.94 1.4 3.3
   Low-standardized 19.2 ± 3.8 0.75* 2.1* 5.0
   High-standardized 15.8 ± 6.2 0.99* 0.6* 1.3
  External Rotation Whole group 17.7 ± 4.4 0.88 1.6 3.7
   Low-standardized 18.8 ± 4.3 0.75* 2.2* 5.2
   High-standardized 16.9 ± 4.4 0.98* 0.9* 2.2
Isokinetic mean peak torque (Nm) External Rotation Whole group 21.4 ± 8.8 0.84 3.4 7.9
   Low-standardized 21.5 ± 10.4 0.72* 4.8* 11.2
   High-standardized 21.3 ± 7.8 0.97* 1.9* 4.3
  Internal Rotation Whole group 29.3 ± 11.6 0.86 4.4 10.3
   Low-standardized 26.2 ± 10.7 0.69* 6.2* 14.4
   High-standardized 31.4 ± 12.0 0.97* 2.5* 5.9
  1. Abbreviations: ICC, intraclass correlation coefficient; SEM, standard errors of measurement; MDC, minimal detectable change.
  2. §From session 1, Mean ± 1 standard deviation
  3. * Significant differences between the standardized and the non-standardized subgroups.
  4. Significant differences between the whole group and the standardized subgroups.