Reference values for isometric muscle force among workers for the Netherlands: a comparison of reference values

Table 3 Correlation between the three measurements, intraclass correlation coefficient, limits of agreement, for three repeated measurements

Muscle force	Corr1-2	Corr1-3	Corr2-3	ICC	LCL- UCL	LOA1-2	LOA1-3	LOA2-3
Elbow flex. left	0.88	0.87	0.87	0.87	0.85 - 0.89	± 59.4	± 61.6	±61.0
Elbow flex. right	0.85	0.86	0.89	0.87	0.85 - 0.89	± 67.8	± 66.8	± 56.3
Elbow ext. left	0.89	0.85	0.88	0.88	0.86 - 0.89	± 42.8	± 50.3	±44.1
Elbow ext. right	0.91	0.91	0.93	0.92	0.90 - 0.93	± 37.0	± 37.2	±32.9
Knee flex. left	0.83	0.81	0.87	0.84	0.81 - 0.86	± 75.9	± 82.5	±68.8
Knee flex. right	0.87	0.82	0.88	0.86	0.83 - 0.88	± 69.8	± 81.4	±67.8
Knee ext. left	0.88	0.85	0.91	0.88	0.86 - 0.89	± 104.0	±117.8	±94.3
Knee ext. right.	0.91	0.90	0.94	0.92	0.90 - 0.93	± 96.3	± 106.7	± 80.2
Abduction left	0.83	0.80	0.87	0.83	0.80 - 0.86	± 55.2	± 59.5	±48.4
Abduction right	0.85	0.87	0.92	0.88	0.85 - 0.90	± 52.6	± 46.5	±37.3

Corr: Correlation, ICC: intraclass correlation coeficient, LCL: lower control limit, UCL: upper control limit, LOA: limits of agreement.

ISSN: 2052-1847