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.