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

Table 2

R values for correlational analyses between various anthropometric, maturity, and fitness parameters.

Variables	CA	BA	Maturity “z”	RA	Height	Weight	PAH	5 m	20 m	COD	CMJ	RSI
CA	—
BA	0.92	—
Maturity “z”	0.19	0.52	—
RA	0.11	0.13	−0.04	—
Height	0.78	0.90	0.59	0.14	—
Weight	0.81	0.88	0.46	0.17	0.90	—
PAH	−0.03	0.10	0.36	0.06	0.53	0.35	—
5 m sprint	−0.65	−0.68	−0.35	−0.08	−0.61	−0.58	−0.08	—
20 m sprint	−0.61	−0.64	−0.32	−0.19	−0.60	−0.58	−0.10	0.66	—
COD	−0.77	−0.75	−0.33	−0.08	−0.64	−0.60	0.02	0.66	0.61	—
CMJ	0.70	0.71	0.32	0.23	0.62	0.67	0.01	−0.62	−0.65	−0.60	—
RSI	0.58	0.47	−0.06	0.05	0.31	0.43	−0.23	−0.36	−0.37	−0.42	0.46	—

Correlation is significant at the 0.05 level (1-tailed). Correlation is significant at the 0.01 level (1-tailed). CA: chronological age; BA: biological age; RA: relative age; PAH: predicted adult height; COD: change of direction.