Table 2. Pearson’s correlation coefficient and intraclass correlation coefficient for absolute agreement for all hip flexion measurements.   Correlation Absolute Agreement PCC Interpretation Sig. (p) ICC 95% C.I. Interpretation Sig. (p) RPIn v PPIn 0.598 Moderate 0.009 0.743 (0.313, 0.904) Moderate 0.04 RPMax v PPMax 0.943 Very High <0.001 0.928 (0.714, 0.977) Excellent <0.001 “PCC” refers to Pearson’s correlation coefficient, “Sig.” refers to significance, “ICC” refers to intraclass correlation, “C.I.” refers to confidence interval, “RPIn v PPIn” refers to comparing researcher perception of initial tension in a stretch with participant perception of initial sensation of stretch, “RPMax v PPMax” refers to comparing researcher perception of maximum tension in a stretch with participant perception of maximum tolerable stretch. Intraclass correlation coefficients are for absolute agreement using average measures and a two-way random effects model. Significance considered at p ≤ 0.05.