The Main and Interactive Effects of Biological Maturity and Relative Age on Physical Performance in Elite Youth Soccer Players

Table 4

Summary of hierarchical regression analysis for variables predicting 20 m (s) sprint time.

Variable	Model 1			Model 2
	B	SE B	β	B	SE B	β
Maturity status (MS)	−0.13	0.39	−0.33	−0.17	0.12	−0.47
Relative age (RA)	−0.17	0.86	−0.21	−0.16	0.09	−0.19
Interaction MS × RA				0.05	0.11	0.14
R^2	0.15			0.15
F for change in R^2	6.90			4.62

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