TABLE 1.

Group means (± SD) of the characteristics of the open skills sport players, and the closed skills sport athletes according to their expertise level.

	Closed-skills group (Track-and-Field)		Open-skills group (Team handball)		Statistical analysis
	Amateur n = 19	Elite n = 21	Amateur n = 27	Elite n = 19	SPT	E	SPT x E
Age (years)	14.2 ± 0.79	13.5 ± 0.68	14.0 ± 0.81	14.1 ± 0.74	ns	ns	*
Sex	10 M, 9 F	10 M, 11 F	12 M, 15 F	11 M, 8 F	ns	ns	ns
Height (cm)	168 ± 8.57	171 ± 8.21	168 ± 7.67	170 ± 8.17	ns	ns	ns
Weight (kg)	54.9 ± 9.95	58.9 ± 10.3	54.3 ± 8.61	61.1 ± 10.3	ns	*	ns
BMI (kg/m2)	19.3 ± 2.43	20.0 ± 2.35	19.1 ± 1.92	21.2 ± 2.20	ns	**	ns
BMI percentile	44.5 ± 23.9	57.0 ± 23.3	43.8 ± 22.0	65.4 ± 18.8	ns	***	ns
Training experience (years)	5.11 ± 2.13	6.76 ± 2.39	7.07 ± 1.52	7.63 ± 1.57	***	***	ns
Training duration main sport (min/week)	254 ± 101	472 ± 102	228 ± 83.7	390 ± 130	*	***	ns
Training duration additional sport (min/week)	36.3 ± 67.5	65.2 ± 76.3	18.9 ± 37.3	11.1 ± 33.5	**	ns	ns

SPT, sport type; E, expertise; * p < 0.05; ** p < 0.01; *** p < 0.001.