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Table 3 Intramachine reproducibility values for concentric and eccentric shoulder tests

From: Intrarater reliability of the Humac NORM isokinetic dynamometer for strength measurements of the knee and shoulder muscles

  ICC2,1 (95% CI) SEM (Nm) SEM% SDC (Nm)
SIR 60°/s
 Right 0.935 (0.888–0.963) 2.7 9.5 7.5
 Left 0.924 (0.869–0.957) 2.7 9.8 7.5
SER concentric 60°/s
 Right 0.898 (0.811–0.944) 2.4 8.6 6.7
 Left 0.934 (0.886–0.962) 1.9 6.9 5.3
SIR concentric 120°/s
 Right 0.878 (0.786–0.931) 3.7 14.4 10.3
 Left 0.944 (0.897–0.969) 2.4 9.8 6.7
SER concentric 120°/s
 Right 0.813 (0.662–0.896) 3.0 12.1 8.3
 Left 0.935 (0.882–0.964) 1.8 7.3 5.0
SER eccentric 60°/s
 Right 0.783 (0.385–0.906) 4.3 11.8 11.9
 Left 0.905 (0.784–0.953) 3.1 8.6 8.6
SER eccentric 120°/s
 Right 0.722 (0.555–0.834) 4.6 13.0 12.8
 Left 0.797 (0.665–0.881) 3.9 11.2 10.8
  1. ICC intraclass correlation coefficient, CI confidence interval, SEM standard error of measurement, SDC smallest detectable change, SIR shoulder internal rotators, SER shoulder external rotators