Journal of Sports Science and Medicine

Table 4. Relationship between physical fitness parameters and hormonal concentrations (GH, IGF-1, IGFBP-3 and IGF1/IGFBP3 ratio) for the soccer players and the controls.

Variables (r)	GH (ng/ml)				IGF-1 (ng/ml)				IGFBP-3 (ng/ml)				IGF1/IGFBP-3 (ng/ml)
Variables (r)	T 0		T 4		T 0		T 4		T 0		T 4		T 0		T 4
Groups	S P	C	S P	C	S P	C	S P	C	S P	C	S P	C	S P	C	S P	C
CMJ (cm)	0.07	-0.12	0.24	-0.11	0.49 *	0.01	0.45 *	0.05	0.45*	0.15	0.47*	0.05	0.47*	0.15	0.49*	0.03
SqJ (cm)	0.04	-0.15	0.13	-0.04	0.58 **	0.13	0.57 **	0.24	0.58**	0.04	0.57**	0.03	0.59**	0.04	0.57**	0.04
5J (cm)	0.25	-0.18	0.27	-0.16	0.52 **	0.04	0.47 *	0.05	0.47*	0.27	0.52**	0.11	0.47*	0.27	0.49**	0.10
30m (s)	-0.02	-0.11	-0.11	-0.16	0.02	0.11	0.14	0.19	0.17	0.09	0.21	0.14	0.19	0.08	0.28	0.16
YYIRT (m)	-0.36	-0.10	-0.20	-0.16	0. 22	0.04	0.19	0.14	0.36	0.16	0.13	0.12	0.47	0.16	0.15	0.13
VO₂ max	-0.05	-0.02	-0.19	-0.02	-0.23	0.03	0.13	0.18	0.35	0.14	0.12	0.12	0.35	0.16	0.14	0.13

GH, growth hormone; IGF-1, insulin-like growth factor-1, IGFBP3, insulin-like growth factor binding protein-3; CMJ, countermovement jump; SqJ, squat jump; 5J, highest of five consecutive jumps; 30m, 30-m sprint; YYIRT, distance covered in the Yo-Yo Intermittent Recovery Test - Level 1; VO_2max, maximal oxygen consumption (ml/min/kg) ; SP, Soccer player; C, Controls; *: Significant correlations

*: p< 0.05

**: p< 0.01.