Table 2.

Differences in anthropometric characteristics, body composition parameters and motor performance between selected and unselected players in the U10, U11 and U12 samples.

Variable	selected U10		unselected U10			selected U11		unselected U11			selected U12		unselected U12
	mean	SD	mean	SD	t(1,24)	mean	SD	mean	SD	t(1,24)	mean	SD	mean	SD	t(1,24)
Body mass (kg)	32.46	4.05	31.44	3.60	0.66	36.83	4.92	35.07	4.21	0.96	40.43	6.36	37.37	2.37	1.14
Stature (cm)	139.21	6.03	137.05	6.23	0.85	146.40	6.79	142.80	3.95	1.68	148.37	8.98	147.43	3.16	0.25
Trunk length (cm)	70.30	2.60	66.61	2.78	3.01a	60.21	39.69	70.83	2.94	−1.04	73.37	4.25	72.68	2.59	0.37
Leg length (cm)	69.66	2.97	70.44	5.37	−0.36	74.25	4.84	71.97	3.25	1.42	75.52	5.17	74.75	1.49	0.35
BMI	16.96	1.78	16.88	1.22	0.12	17.21	1.52	17.13	1.48	0.13	18.91	1.79	17.62	0.96	1.68
PHV	−3.48	0.30	−3.86	0.30	2.84b	−2.87	0.35	−3.10	0.34	1.61	−2.37	0.55	−2.47	0.35	0.41
APHV	13.40	0.23	13.71	0.29	−2.49a	13.79	0.29	13.81	0.30	−0.23	14.10	0.48	14.24	0.30	−0.68
Humeral w. (cm)	5.61	0.36	5.37	0.32	1.63	5.66	0.31	5.69	0.27	−0.19	5.92	0.40	5.62	0.24	1.59
Femural w. (cm)	8.35	0.35	8.14	0.35	1.33	8.63	0.33	8.47	0.42	1.01	9.07	0.52	8.62	0.36	1.81
TUA (cm2)	29.03	4.73	27.65	4.63	0.67	32.24	6.64	33.62	6.32	−0.52	36.75	7.17	31.17	1.57	1.70
UMA (cm2)	21.72	3.56	19.91	3.35	1.19	24.06	5.10	24.51	4.31	−0.24	26.58	5.28	22.65	1.60	1.62
UFA (cm2)	7.31	1.69	7.74	1.98	−0.51	8.19	2.01	9.11	2.87	−0.87	10.17	2.95	8.51	1.81	1.18
UFI (%)	25.11	3.53	27.93	4.47	−1.52	25.41	3.06	26.77	5.80	−0.67	27.56	4.82	27.24	5.26	0.13
TCA (cm2)	62.71	9.10	63.62	7.56	−0.25	70.14	7.75	66.45	11.51	0.88	76.89	17.59	86.59	31.55	−0.91
CMA (cm2)	54.78	7.62	52.93	5.19	0.68	59.95	7.29	55.42	9.45	1.27	63.62	15.41	74.29	32.01	−1.07
CFA (cm2)	7.94	2.19	10.69	3.16	−2.18a	10.18	3.33	11.04	3.92	−0.56	13.27	4.35	12.29	1.81	0.48
CFI (%)	12.53	2.39	16.56	3.63	−2.79b	14.52	4.52	16.65	5.11	−1.05	17.41	4.12	15.42	4.45	0.94
TTA (cm2)	119.61	16.82	118.71	14.60	0.13	132.81	16.74	130.20	19.33	0.34	149.09	30.00	124.36	35.37	1.57
TMA (cm2)	101.85	14.20	98.43	11.77	0.61	112.44	13.41	107.06	13.70	0.96	124.31	23.04	104.01	31.07	1.62
TFA (cm2)	17.76	3.89	20.28	4.46	−1.33	20.37	5.46	23.13	6.80	−1.06	24.78	9.35	20.35	6.05	1.00
TFI (%)	14.78	2.27	17.01	2.86	−1.88	15.23	3.09	17.49	3.25	−1.71	16.32	3.85	16.83	3.67	−0.26
BF (%)	12.15	2.07	13.10	2.29	−0.97	13.23	2.58	14.47	3.65	−0.92	16.37	4.06	14.02	2.67	1.21
FM (kg)	3.97	1.01	4.16	1.28	−0.37	4.92	1.32	5.20	1.83	−0.41	6.65	2.18	5.36	1.02	1.27
FFM (kg)	28.42	3.56	27.06	2.75	1.00	31.91	4.08	30.01	2.87	1.35	33.41	4.52	32.92	1.42	0.24
RX (Ω)	616.73	73.08	650.06	52.99	−1.24	622.40	55.72	641.59	56.14	−0.85	603.82	74.25	642.80	38.46	−1.12
XC (Ω)	64.69	3.26	66.96	7.57	−0.80	67.66	7.56	67.39	6.74	0.10	65.11	9.61	68.28	3.09	−0.72
PA	6.07	0.59	5.91	0.57	0.62	6.25	0.62	6.02	0.34	1.15	6.18	0.55	6.10	0.31	0.32
CMJ (cm)	24.18	4.39	23.29	3.10	0.55	26.69	3.69	24.09	3.58	1.73	28.51	4.07	27.18	3.60	0.71
15 m sprint (s)	2.97	0.13	3.02	0.07	−1.12	2.71	0.11	2.83	0.12	−2.52a	2.67	0.14	2.64	0.06	0.44
RSA (s)	6.63	0.19	6.78	0.30	−1.34	6.27	0.25	6.52	0.29	−2.08a	6.30	0.32	6.13	0.24	1.07
HARRE test (s)	14.47	1.01	14.59	0.71	−0.33	13.63	1.06	13.96	1.82	−0.54	13.50	0.91	13.34	0.84	0.36

note: w., width; sk, skinfold; SD, standard deviation; t, student's t statistical test.

^a, -value<0.05.

^b, p-value<0.01.