Table 4.

Multivariate meta-regression for training variables to predict plyometric jump training effects.

Covariate	Coefficient	95%CI	95%CI	T	p
Countermovement jump height (n = 14)
Intercept	2.148	-2.982	7.277	0.933	0.373
Training duration	0.377	-1.080	1.835	0.577	0.577
Training frequency	-0.430	-2.361	1.501	-0.496	0.631
Total number of contacts per week	-0.002	-0.007	0.003	-0.862	0.409
Squat jump height (n = 13)
Intercept	2.314	-1.439	6.069	1.395	0.197
Training duration	0.139	-0.888	1.167	0.307	0.766
Training frequency	-0.487	-1.880	0.907	-0.790	0.450
Total number of contacts per week	-0.001	-0.005	0.002	-0.787	0.451
≤ 10-m linear sprint time (n = 17)
Intercept	-1.957	-5.544	1.631	-1.189	0.258
Training duration	0.148	-0.778	1.073	0.348	0.734
Training frequency	0.237	-1.021	1.494	0.410	0.689
Total number of contacts per week	0.001	-0.003	0.005	0.623	0.545
Agility t-test time (n = 18)
Intercept	-2.465	-6.971	2.041	-1.192	0.256
Training duration	-0.170	-1.202	0.863	-0.358	0.863
Training frequency	0.414	-1.224	2.051	0.550	0.592
Total number of contacts per week	0.001	-0.003	0.005	0.742	0.473