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

Table 5 Reliability of the strength measurements performed after the endurance 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

Abbreviations: ICC, intraclass correlation coefficient; SEM, standard errors of measurement; MDC, minimal detectable change.
^§From session 1, Mean ± 1 standard deviation
* Significant differences between the standardized and the non-standardized subgroups.
^¶ Significant differences between the whole group and the standardized subgroups.

ISSN: 2052-1847