Table 4.

Intraobserver (test-retest) reliability of varying strength measurement positions*

Side	Stabilization	Abduction	ICC (2, 1)	Lower limit	Upper limit
Dominant	Without	90°	0.93	0.86	0.96
	Without	60°	0.76	0.56	0.88
	Without	30°	0.81	0.64	0.90
	With	90°	0.84	0.70	0.92
	With	60°	0.71	0.48	0.85
	With	30°	0.76	0.56	0.87
Nondominant	Without	90°	0.92	0.84	0.96
	Without	60°	0.88	0.77	0.94
	Without	30°	0.84	0.70	0.92
	With	90°	0.88	0.78	0.94
	With	60°	0.91	0.82	0.95
	With	30°	0.81	0.64	0.90

* All single intraclass correlation coefficients (ICCs) were significant (p < 0.0001).