Table 6. Internal reliability (Cronbach’s alpha) of participant and researcher ROM measurements and perceptions for hip flexion and shoulder stretches. Condition Hip ROM Shoulder ROM PPIn PPMax RPIn RPMax PPIn PPMax RPIn RPMax Cronbach’s ɑ 0.963 0.991 0.966 0.985 0.867 0.969 0.977 0.990 Interpretation Excellent Excellent Excellent Excellent Good Excellent Excellent Excellent “ROM” refers to range of motion, “Hip” refers to passive supine hip flexion stretch, “Shoulder” refers to passive standing shoulder extension, “PP” refers to participant perception, “RP” refers to researcher perception, “In” refers to participant perception of initial sensation of stretch and researcher perception of initial tension in the muscle, “Max” refers to participant perception of maximum tolerable stretch and researcher perception of maximum tension in the muscle.