Table 4. Intraclass correlation coefficient for absolute agreement for hamstrings RPMax vs. PPMax by training status and stretching experience.
Training Status N ICC 95% C.I. Sig. (p=) Interpretation
Sedentary 3 0.390 (-0.188, 0.969) 0.177 Poor
Recreationally Active 4 0.696 (-0.053,0.976) 0.006 Moderate
Trained 6 0.944 (0.645, 0.992) 0.004 Excellent
Athlete 5 0.972 (0.715, 0.997) 0.003 Excellent
Stretching Experience
None 3 -0.387 N/A 0.990 N/A
Past Only 6 0.798 (-0.107, 0.974) <0.001 Good
Present + Past 9 0.917 (0.640, 0.981) 0.001 Excellent
“ICC” refers to intraclass correlation, “C.I.” refers to confidence interval, “Sig.” refers to significance. Intraclass correlation coefficients are for absolute agreement using average measures and a two-way random effects model. Negative intraclass correlation coefficient for absolute agreement in such a small sample size will not be interpreted, this is represented by “N/A”. Significance considered at p ≤ 0.05.