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