Table 2. Results of meta-analyses for overall criterion-related validity correlation coefficients across sit-and-reach test protocols. Sit-and-reach test K n N rc rp 95% CIa 95% CVb % of variancec Q statistic Hamstring extensibility Classic sit-and-reach 28 47 3,481 .65 .67 .55, .80 .44, .91 22.55 208.39* Modified sit-and-reach 9 16 1,058 .54 .56 .39, .73 .32, .80 33.14 48.28* Back-saver sit-and-reach 10 18 1,158 .57 .59 .43, .75 .38, .80 36.65 49.12* Modified back-saver sit-and-reach 2 3 213 .44 .46 .28, .65 .46, .46 100.00 .18 V sit-and-reach 3 5 411 .56 .60 .46, .74 .60, .60 100.00 3.23 Modified V sit-and-reach 2 3 213 .55 .59 .44, .74 .59, .59 100.00 1.14 Unilateral sit-and-reach 2 4 378 .61 .64 .52, .76 .51, .76 47.43 8.43* Chair sit-and-reach 2 3 182 .45 .49 .29, .68 –.11, 1.00 9.50 31.57* Lumbar extensibility Classic sit-and-reach 13 21 1,762 .25 .26 .05, .46 .19, .32 91.52 22.95 Modified -sit-and-reach 5 8 484 .26 .26 .03, .50 .26, .26 100.00 1.39 Back-saver sit-and-reach 5 9 510 .15 .16 –.10, .41 .16, .16 100.00 4.72 Modified back-saver sit-and-reach 2 3 213 .20 .21 –.01, .44 .21, .21 100.00 .07 V sit-and-reach 3 5 411 .30 .31 .11, .51 .31, .31 100.00 2.42 Modified V sit-and-reach 2 3 213 .30 .32 .11, .53 .32, .32 100.00 .63 Unilateral sit-and-reach 1 2 158 .34 .35 .15, .54 .26, .43 83.73 2.39 Chair sit-and-reach - - - - - - - - - , number of studies; , number of s; , total sample size; , overall weighted mean of corrected for sampling error only; , overall weighted mean of corrected for sampling error and measurement error; 95% confidence interval; 95% credibly interval Percentage of variance accounted for by statistical artefacts including sampling error and measurement error of sit-and-reach tests. * < 0.05.