Test–retest and inter-rater reliability for each hip flexibility and strength measure
| Measures | Test–retest (n = 13) | Inter-rater (n = 12) | ||||||||
| Test* | Retest* | ICC (3,1) | SEM | 95% CI SEM | Rater A* | Rater B* | ICC (2,1) | SEM | 95% CI SEM | |
| Flexibility | ||||||||||
| Right BKFO (cm) | 10.1 (2.4) | 9.8 (2.4) | 0.90 | 1 | 2 | 14.6 (5.7) | 14.1 (5.8) | 0.93 | 2 | 3 |
| Left BKFO (cm) | 9.6 (3.1) | 9.4 (2.9) | 0.89 | 1 | 2 | 14.2 (5.2) | 14.0 (4.8) | 0.91 | 2 | 3 |
| Right hip ER (°) | 41.5 (7.1) | 40.3 (7.5) | 0.82 | 4 | 7 | 42.5 (6.8) | 41.8 (8.6) | 0.64 | 5 | 9 |
| Left hip ER (°) | 50.9 (8.8) | 48.7 (8.6) | 0.80 | 4 | 7 | 48.7 (10.8) | 45.8 (10.1) | 0.77 | 6 | 10 |
| Right hip IR (°) | 30.6 (10.2) | 29.6 (9.4) | 0.97 | 2 | 4 | 37.9 (9.1) | 37.5 (9.4) | 0.89 | 3 | 6 |
| Left hip IR (°) | 28.5 (11.0) | 27.0 (9.6) | 0.96 | 2 | 4 | 38.1 (12.7) | 38.1 (11.8) | 0.93 | 4 | 7 |
| Strength | ||||||||||
| Right hip ABD (Nm) | 14.0 (1.9) | 14.6 (1.9) | 0.81 | 0.9 | 1.7 | 13.1 (2.2) | 12.0 (2.6) | 0.73 | 1.3 | 2.5 |
| Left hip ABD (Nm) | 13.9 (2.4) | 13.7 (2.1) | 0.84 | 0.9 | 1.8 | 13.2 (2.4) | 12.4 (2.5) | 0.58 | 1.6 | 3.1 |
| Right hip ER (Nm) | 3.8 (1.2) | 4.1 (0.9) | 0.55 | 0.8 | 1.4 | 4.5 (1.6) | 4.3 (1.0) | 0.60 | 0.8 | 1.6 |
| Left hip ER (Nm) | 3.6 (0.9) | 4.0 (1.2) | 0.64 | 0.7 | 1.3 | 3.9 (1.3) | 4.1 (0.9) | 0.63 | 0.7 | 1.3 |
| Right hip IR (Nm) | 3.1 (0.8) | 3.4 (1.0) | 0.67 | 0.6 | 1.0 | 3.3 (0.8) | 3.0 (0.6) | 0.40 | 0.5 | 1 |
| Left hip IR (Nm) | 3.0 (0.9) | 3.1 (0.7) | 0.57 | 0.5 | 1.0 | 3.4 (0.7) | 3.1 (0.7) | 0.54 | 0.5 | 1 |
| Squeeze 0° (mm Hg) | 204 (48) | 216 (37) | 0.81 | 20 | 35 | 202 (34) | 203 (43) | 0.80 | 20 | 35 |
| Squeeze 30° (mm Hg) | 206 (52) | 215 (49) | 0.91 | 20 | 30 | 218 (40) | 213 (40) | 0.82 | 20 | 35 |
| Squeeze 45° (mm Hg) | 208 (48) | 205 (46) | 0.94 | 15 | 30 | 206 (37) | 209 (41) | 0.83 | 20 | 35 |
ABD, abduction; BKFO, bent knee fall out; ER, external rotation; IR, internal rotation.
*Values are mean (SD).