Table 2

Test–retest and inter-rater reliability for each hip flexibility and strength measure

MeasuresTest–retest (n  =  13)Inter-rater (n  =  12)
Test*Retest*ICC (3,1)SEM95% CI SEMRater A*Rater B*ICC (2,1)SEM95% CI SEM
Flexibility
Right BKFO (cm)10.1 (2.4)9.8 (2.4)0.901214.6 (5.7)14.1 (5.8)0.9323
Left BKFO (cm)9.6 (3.1)9.4 (2.9)0.891214.2 (5.2)14.0 (4.8)0.9123
Right hip ER (°)41.5 (7.1)40.3 (7.5)0.824742.5 (6.8)41.8 (8.6)0.6459
Left hip ER (°)50.9 (8.8)48.7 (8.6)0.804748.7 (10.8)45.8 (10.1)0.77610
Right hip IR (°)30.6 (10.2)29.6 (9.4)0.972437.9 (9.1)37.5 (9.4)0.8936
Left hip IR (°)28.5 (11.0)27.0 (9.6)0.962438.1 (12.7)38.1 (11.8)0.9347
Strength
Right hip ABD (Nm)14.0 (1.9)14.6 (1.9)0.810.91.713.1 (2.2)12.0 (2.6)0.731.32.5
Left hip ABD (Nm)13.9 (2.4)13.7 (2.1)0.840.91.813.2 (2.4)12.4 (2.5)0.581.63.1
Right hip ER (Nm)3.8 (1.2)4.1 (0.9)0.550.81.44.5 (1.6)4.3 (1.0)0.600.81.6
Left hip ER (Nm)3.6 (0.9)4.0 (1.2)0.640.71.33.9 (1.3)4.1 (0.9)0.630.71.3
Right hip IR (Nm)3.1 (0.8)3.4 (1.0)0.670.61.03.3 (0.8)3.0 (0.6)0.400.51
Left hip IR (Nm)3.0 (0.9)3.1 (0.7)0.570.51.03.4 (0.7)3.1 (0.7)0.540.51
Squeeze 0° (mm Hg)204 (48)216 (37)0.812035202 (34)203 (43)0.802035
Squeeze 30° (mm Hg)206 (52)215 (49)0.912030218 (40)213 (40)0.822035
Squeeze 45° (mm Hg)208 (48)205 (46)0.941530206 (37)209 (41)0.832035
  • ABD, abduction; BKFO, bent knee fall out; ER, external rotation; IR, internal rotation.

  • *Values are mean (SD).