The regression analysis
reported a high correlation between SRT and TT test (b ¼ 0.829).
However, the assessing agreement analysis between both tests
showed significant systematic bias (2.84 cm) with a 95% of random
error of -
9.72 cm. Therefore, although the correlation coefficient
between SRT and TT test was high, the 95% limits of agreement
showed considerable discrepancies between the two methods and
the degree of agreement is not acceptable for clinical purposes.
Furthermore, Kappa correlation analysis reported that the TT test was
unable to classify any participant in this sample of recreationally
active young healthy adults as having short hamstring flexibility,
when compared with the PSLR cut-off score. However, SRT was able
to classify participants as having normal or short hamstring flexibility
using the guideline cut-off scores offered by ACSM (1998)