Table 14. Regression models of the performance in the different physical fitness tests in the 14-years-old group.

Age group	Variable	Analysis	R2	p value	Included independent variables	SC	Equation
14 years old	Medicine ball throw	Model 1	0.45	0.017	Sitting height	0.67	Medicine ball throw = −16.293 + 0.260*sitting height
		CMJ	Model 1	0.41	0.024	∑8 skinfolds	−0.64	CMJ = 35.526 − 0.421* ∑8 skinfolds
		CMJ power	Model 1	0.89	<0.001	Body mass	0.94	CMJ power =144.949 + 9.810*body mass (kg)
				Model 2	0.95	<0.001	Body mass	1.43	CMJ power = −59.752 + 14.930*body mass − 1.486* ∑8 skinfolds
			∑8 skinfolds				−0.55
		20 m sprint	Model 1	0.78	<0.001	Fat mass (%)	0.88	Sprint =3.492 + 0.023*fat mass (%)
	Agility test	Model 1	0.61	0.003	Corrected arm girth	0.78	Agility =4.812 + 0.168*corrected arm girth

Notes.

SC

Standardized coefficients