ANTHROPOMETRIC PROFILE AT U-15 TO PROFESSIONAL ON BRAZILIAN NATIONAL TEAM SOCCER PLAYERS

Campos, Helton Oliveira; Wilke, Carolina Franco; Drummond, Lucas Rios; Drummond, Filipe Rios; Coimbra, Cândido Celso; Ramos, Guilherme Passos

doi:10.1590/1517-8692202430012022_0425i

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Revista Brasileira de Medicina do Esporte

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Original Article, Kineantropometry • Rev Bras Med Esporte 30 • 2024 • https://doi.org/10.1590/1517-8692202430012022_0425i copy

ANTHROPOMETRIC PROFILE AT U-15 TO PROFESSIONAL ON BRAZILIAN NATIONAL TEAM SOCCER PLAYERS

PERFIL ANTROPOMÉTRICO DE JUGADORES SUB-15 A PROFESIONALES DE LA SELECCIÓN BRASILEÑA DE FÚTBOL

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Introduction:

Although competitiveness rises progressively increases according to age groups, players must stand out in their playing position at all ages to win a spot on their National Teams. The differences among match physical and technical demands could also influence which anthropometrical aspects would be most importantly considered for National Team selection.

Objectives:

This study aimed describe and compare the anthropometric profile of soccer players from U15 to professional categories of the Brazilian National Soccer Team.

Methods:

The sample consisted of 673 players from the categories U15, U17, U20, U23 and PRO. Measurements of height, body mass, and sum of seven skinfolds from the Brazilian Football Confederation database between 2013 and 2021 were used to describe the players’ anthropometric profile. Players were grouped according to categories, playing position, and those who were selected or not selected.

Results:

As expected, the results indicate that body mass increases with age and stabilizes from category U23 onwards. Body mass and the sum of seven skinfolds increase within the U15 category (U15.1 vs. U15.2), while height and body mass increase within the U17 category (U17.1 vs. U17.2). Defenders and fullbacks stabilize body mass and stature prior to U17, while midfielders, strikers, and goalkeepers stabilize body mass later, with midfielders and strikers at U20, and goalkeepers at U23. Goalkeepers and defenders were the players with the greatest height and body mass compared to the other positions in all categories. The selected and non-selected players in the different categories had similar anthropometric profiles.

Conclusion:

From the results, there is a diversity in anthropometric profile within the positions and a difference in maturation according to the players’ positions. This study can be used by coaches, physical trainers and sport scientists as normative data about the anthropometric profile of Brazilian men's soccer teams, establishing a benchmark. Level of Evidence III; Retrospective and Comparative Study.

Keywords:
Anthropometry; Soccer; Youth; Athletes; Athletes; Professional

Category	n	Mean ± SD	95% CI	Min. - Max.
Stature (cm)
U15	133	175.2 ± 5.8	174.2 – 176.2	162 - 187
U17	198	176.9 ± 7.3	175.9 – 178.0	162 - 195
U20	135	179.6 ± 6.6 ^a a p < 0.05 vs. Under 15.1. ^b b p < 0.05 vs. Under 17.1.	178.5 – 180.7	162 - 195
U23	67	178.7 ± 6.7 ^a a p < 0.05 vs. Under 15.1.	177.0 – 180.3	164 - 195
PRO	59	180.3 ± 6.6 ^a a p < 0.05 vs. Under 15.1. ^b b p < 0.05 vs. Under 17.1.	178.6 – 182.1	168 - 192
Body mass (kg)
U15	133	65.1 ± 6.2	64.1 – 66.2	51 - 83
U17	198	69.0 ± 7.3 ^a a p < 0.05 vs. Under 15.1.	67.9 – 70.0	49 - 95
U20	135	73.4 ± 7.7 ^a a p < 0.05 vs. Under 15.1. ^b b p < 0.05 vs. Under 17.1.	72.1 – 74.7	54 - 92
U23	68	76.0 ± 7.5 ^a a p < 0.05 vs. Under 15.1. ^b b p < 0.05 vs. Under 17.1.	74.2 – 77.8	60 - 95
PRO	60	79.5 ± 7.5 ^a a p < 0.05 vs. Under 15.1. ^b b p < 0.05 vs. Under 17.1. ^c c p < 0.05 vs. Under 20.1.	77.5 – 81.4	67 - 97
Sum 7 skinfolds (mm)
U15	133	47.0 ± 9.5	45.4 – 48.7	28 - 81
U17	198	50.3 ± 10.3	48.9 – 51.8	32 - 90
U20	135	50.9 ± 12.4	48.8 – 53.0	31 - 95
U23	61	47.0 ± 8.2	44.9 – 49.2	28 - 64
PRO	37	50.0 ± 0.2	47.1 – 53.9	36 - 74

Category.year	n	Mean ± SD	(95% CI)	Min. - Max.
Stature (cm)
U15.1	29	173.4 ± 5.1	171.5 – 175.4	167 - 183
U15.2	104	175.6 ± 5.9	174.5 – 176.8	162 - 187
U17.1	98	175.8 ± 7.5	174.3 – 177.3	162 - 195
U17.2	100	178.1 ± 7.1 ^b b p < 0.05 vs. Under 17.1.	176.7 – 179.5	162 - 194
U20.1	107	179.3 ± 6.7	178.1 – 180.6	162 - 195
U20.2	28	180.5 ± 5.8	178.3 – 180.6	169 - 190
U23.1	24	178.6 ± 7.0	175.7 – 181.6	164 - 190
U23.2	23	178.2 ± 7.1	175.1 – 181.3	164 - 195
U23.3	20	179.3 ± 6.2	176.3 – 182.2	169 - 191
Body mass (kg)
U15.1	29	62.0 ± 4.9	60.1 – 63.9	53 - 72
U15.2	104	66.0 ± 6,2 ^a a p < 0.05 vs. Under 15.1.	64.8 – 67.2	51 - 83
U17.1	98	67.6 ± 6.6	66.2 – 68.9	48 - 80
U17.2	100	70.3 ± 7.8^b b p < 0.05 vs. Under 17.1.	68.8 – 71.9	57 - 95
U20.1	107	73.5 ± 7.6	72.1 – 75.0	55 - 92
U20.2	28	72.9 ± 8.3	69.7 – 76.2	54 - 89
U23.1	24	76.7 ± 7.2	73.7 – 79.8	61 - 92
U23.2	24	74.8 ± 7.75	71.6 – 78.0	60 - 89
U23.3	20	76.7 ± 7.8	73.0 – 80.3	67 - 95
Sum 7 skinfolds (mm)
U15.1	29	52.0 ± 9.2	48.4 – 55.5	36 - 81
U15.2	104	45.7 ± 9.2 ^a a p < 0.05 vs. Under 15.1.	43.9 – 47.5	28 - 71
U17.1	98	51.5 ± 11.0	49.3 – 53.7	32 - 90
U17.2	100	49.2 ± 9.5	47.3 – 51.1	32 - 72
U20.1	107	50.4 ± 12.7	47.9 – 52.8	31 - 95
U20.2	28	53.0 ± 11.3	48.6 – 57.3	32 - 74
U23.1	21	48.4 ± 8.8	43.9 – 50.9	37 - 64
U23.2	21	47.4 ± 7.6	42.9 – 50.6	34 - 63
U23.3	19	46.8 ± 8.4	42.6 – 51.4	28 - 64

Category	n	Mean ± SD	(95% CI)	Min. - Max.	n	Mean ± SD	(95% CI)	Min. - Max.	n	Mean ± SD	(95% CI)	Min. - Max.
	Stature (cm)				Body Mass				Sum 7 skinfolds (mm)
Goalkeeper
U15	17	186.5 ± 4.9	184.0 – 189.0	178 - 196	17	79.5 ± 7.4	75.7 – 83.4	67 - 89	17	60.6 ± 15.0	52.9 – 68.3	42 - 92
U17	25	188.3 ± 5.5	186.1 – 190.6	178 - 202	25	80.5 ± 6.3	77.9 – 83.1	69 - 93	25	54.6 ± 13.1	49.1 – 60.0	35 - 87
U20	18	190.4 ± 5.6	187.6 – 193.2	177 - 198	18	83.2 ± 8.9	78.8 – 87.7	65 - 100	18	65.8 ± 14.2	58.8 – 72.9	48 - 90
U23	8	191.0 ± 4.8	187.0 – 195.0	185 - 198	8	93.1 ± 7.1 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17. ^c c p < 0.05 vs. Under 20.	87.1 – 99.0	84 - 108	8	70.4 ± 13.1	59.5 – 81.3	48 - 85
PRO	13	189.6 ± 2.5	188.1 – 191.1	186 - 194	13	89.6 ± 6.6 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17.	85.7 – 93.6	81 - 104	7	67.6 ± 51.5	47.6 – 87.5	47 - 100
Central defender
U15	25	181.6 ± 2.9	180.4 – 182.8	173 - 187	25	71.7 ± 5.0	68.5 – 73.5	65 - 83	25	48.1 ± 10.2	43.9 – 52.3	33 - 71
U17	38	186.1 ± 4.8 ^a a p < 0.05 vs. Under 15.	184.6 – 187.7	175 - 195	38	76.6 ± 7.7 ^a a p < 0.05 vs. Under 15.	74.0 – 79.1	61 - 95	38	52.4 ± 11.4	48.6 – 56.1	34 - 90
U20	28	187.5 ± 3.1 ^a a p < 0.05 vs. Under 15.	186.3 – 188.7	179 - 195	28	78.2 ± 7.8 ^a a p < 0.05 vs. Under 15.	75.1 – 81.2	54 - 89	28	52.8 ± 12.1	48.1 – 57.5	37 - 82
U23	11	186.5 ± 4.2 ^a a p < 0.05 vs. Under 15.	183.7 – 189.4	181 - 195	11	82.7 ± 6.9 ^a a p < 0.05 vs. Under 15.	78.1 – 87.4	71 - 92	9	50.8 ± 8.4	44.3 – 57.2	39 - 64
PRO	15	186.6 ± 4.2 ^a a p < 0.05 vs. Under 15.	184.3 – 188.9	180 - 192	14	85.3 ± 7.0 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17. ^c c p < 0.05 vs. Under 20.	81.5 – 89.0	75 - 97	8	47.0 ± 10.7	39.3 – 54.7	38 - 69
Full-back
U15	22	172.4 ± 4.3	170.6 – 174.3	167 - 182	22	62.4 ± 6.0	59.8 – 65.1	54 - 79	22	47.4 ± 9.4	43.2 – 51.5	31 - 66
U17	40	175.2 ± 6.4	173.1 – 177.3	163 - 189	40	67.5 ± 4.8 ^a a p < 0.05 vs. Under 15.	65.2 – 69.0	57 - 76	40	48.0 ± 9.8	44.8 – 51.1	32 - 70
U20	22	177.3 ± 4.9	175.1 – 179.5	169 - 188	22	72.1 ± 4.9 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17.	69.9 – 74.3	65 - 82	22	49.0 ± 11.0	44.1 – 53.9	33 - 74
U23	13	175.1 ± 4.7	172.2 – 178.0	166 - 181	14	70.9 ± 3.7 ^a a p < 0.05 vs. Under 15.	68.8 – 73.0	67 – 81	14	41.2 ± 7.6	36.8 – 45.6	28 - 54
PRO	11	177.2 ± 5.0	173.9 – 180.6	168 - 184	11	76.7 ± 5.3 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17. ^d d p < 0.05 vs. Under 23.	73.1 – 80.1	70 - 89	7	48.0 ± 9.7	39.0 – 57.0	36 - 67
Midfielder
U15	46	174.2 ± 5.4	172.6 – 175.8	162 - 185	46	63.2 ± 4.6	61.8 – 64.5	53 - 73	46	47.4 ± 8.7	44.8 – 50.0	31 - 67
U17	56	175.0 ± 6.5	173.3 – 176.7	162 - 195	56	66.1 ± 5.5	64.6 – 67.5	54 - 78	56	50. 9 ± 11.1	48.0 – 53.9	33 - 82
U20	42	177.9 ± 5.9	176.1 – 179.8	162 - 188	42	71.8 ± 8.2 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17.	69.2 – 74.3	55 - 89	42	50.2 ± 13.1	46.1 – 54.3	31 - 92
U23	19	178.5 ± 5.9	175.6 – 181.3	169 - 188	19	77.3 ± 5.5 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17. ^c c p < 0.05 vs. Under 20.	74.7 – 80.0	70 - 91	19	51.8 ± 7.0	48.5 – 55.2	40 - 63
PRO	19	176.8 ± 6.4	173.7 – 179.9	169 - 187	19	75.3 ± 6.2 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17.	72.3 – 78.3	67 - 90	11	52.5 ± 11.2	45.0– 60.0	39 - 74
Forward
U15	40	173.7 ± 5.7	171.9 – 175.5	162 - 187	40	65.2 ± 5.7	63.4 – 67.0	51 - 80	40	45.9 ± 10.3	42.6 – 49.2	28 - 81
U17	64	174.2 ± 5.5	172.9 – 175.6	164 - 187	64	67.9 ± 6.9	66.2 – 69.6	48 - 80	64	50.1 ± 9.0	47.8 – 52.4	32 - 76
U20	43	177.2 ± 5.7 ^a a p < 0.05 vs. Under 15.	175.5 – 179.0	167 - 192	43	72.6 ± 7.4 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17.	70.3 – 74.9	62 - 92	43	51.3 ± 12.8	47.3 – 55.2	32 - 95
U23	24	177.2 ± 6.6	174.4 – 180.0	164 - 191	24	75.0 ± 8.3 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17.	71.4 – 78.5	60 - 95	19	44.8 ± 6.5	41.7 – 48.0	35 - 64
PRO	14	180.9 ± 5.5 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17.	177.7 – 184.0	172 - 189	14	80.8 ± 7.1 ^a a p < 0.05 vs. Under 15. ^b b p < 0.05 vs. Under 17. ^c c p < 0.05 vs. Under 20.	76.7 – 84.9	70 - 92	9	53.9 ± 8.2	47.6 – 60.2	41 - 65

Position	n	Mean ± SD	95% CI	Min. - Max.	n	Mean ± SD	95% CI	Min. - Max.	n	Mean ± SD	95% CI	Min. - Max.
Stature (cm)					Body mass (kg)				Sum 7 skinfolds (mm)
Under 15
Goalkeeper	17	186.5 ± 4.9	184.0 – 189.0	178 - 196	17	79.5 ± 7.4	75.7 – 83.4	67 - 89	17	60.6 ± 15.0	52.9 – 68.3	42 - 92
Central defender	25	181.6 ± 2.9	180.4 – 182.8	173 - 187	25	71.0 ± 6.0 ^a a p < 0.05 vs. Goalkeeper.	68.5 – 73.5	55 - 83	25	48.1 ± 10.2	43.9 – 52.3	33 - 71
Full-back	22	172.4 ± 4.3 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	170.6 – 174.3	167 - 182	22	62.4 ± 6.0 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	59.8 – 65.1	54 - 79	22	47.4 ± 9.4	43.2 – 51.5	31 - 66
Midfielder	46	174.2 ± 5.4 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	172.6 – 175.8	162 - 185	46	63.2 ± 4.6 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	61.8 – 64.5	53 - 73	46	47.4 ± 8.7 ^a a p < 0.05 vs. Goalkeeper.	44.8 – 50.0	31 - 67
Forward	40	173.7 ± 5.7 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	171.9 – 175.5	162 - 187	40	65.2 ± 5.7 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	63.4 – 67.0	51 - 80	40	45.9 ± 10.3 ^a a p < 0.05 vs. Goalkeeper.	42.6 – 49.2	28 - 81
Under 17
Goalkeeper	25	188.3 ± 5.5	186.1 – 190.6	178 - 202	25	80.5 ± 6.3	77.9 – 83.1	69 - 93	25	54.6 ± 13.1	49.1 – 60.0	35 - 87
Central defender	38	186.1 ± 4.8	184.6 – 187.7	175 - 195	38	76.6 ± 7.7	74.0 – 79.1	61 - 95	38	52.4 ± 11.4	48.6 – 56.1	34 - 90
Full-back	40	175.2 ± 6.4 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	173.1 – 177.3	163 - 189	40	67.5 ± 4.8 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	65.2 – 69.0	57 - 76	40	48.0 ± 9.8	44.8 – 51.1	32 - 70
Midfielder	56	175.0 ± 6.5 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	173.3 – 176.7	162 - 195	56	66.1 ± 5.5 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	64.6 – 67.5	54 - 78	56	50. 9 ± 11.1	48.0 – 53.9	33 - 82
Forward	64	174.2 ± 5.5 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	172.9 – 175.6	164 - 187	64	67.9 ± 6.9 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	66.2 – 69.6	48 - 80	64	50.1 ± 9.0	47.8 – 52.4	32 - 76
Under 20
Goalkeeper	18	190.4 ± 5.6	187.6 – 193.2	177 - 198	18	83.2 ± 8.9	78.8 – 87.7	65 - 100	18	65.8 ± 14.2	58.8 – 72.9	48 - 90
Central defender	28	187.5 ± 3.1	186.3 – 188.7	179 - 195	28	78.2 ± 7.8	75.1 – 81.2	54 - 89	28	52.8 ± 12.1 ^a a p < 0.05 vs. Goalkeeper.	48.1 – 57.5	37 - 82
Full-back	22	177.3 ± 4.9 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	175.1 – 179.5	169 - 188	22	72.1 ± 4.9 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	69.9 – 74.3	65 - 82	22	49.0 ± 11.0 ^a a p < 0.05 vs. Goalkeeper.	44.1 – 53.9	33 - 74
Midfielder	42	177.9 ± 5.9 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	176.1 – 179.8	162 - 188	42	71.8 ± 8.2 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	65.2 – 69.0	55 - 89	42	50.2 ± 13.1 ^a a p < 0.05 vs. Goalkeeper.	46.1 – 54.3	31 - 92
Forward	43	177.2 ± 5.7 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	175.5 – 179.0	167 - 192	43	72.6 ± 7.4 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	70.3 – 74.9	62 - 92	43	51.3 ± 12.8 ^a a p < 0.05 vs. Goalkeeper.	47.3 – 55.2	32 - 95
Under 23
Goalkeeper	8	191.0 ± 4.8	187.0 – 195.0	185 - 198	8	93.1 ± 7.1	87.1 – 99.0	84 - 108	8	70.4 ± 13.1	59.5 – 81.3	48 - 85
Central defender	11	186.5 ± 4.2	183.7 – 189.4	181 - 195	11	82.7 ± 6.9	78.1 – 87.4	71 - 92	9	50.8 ± 8.4 ^a a p < 0.05 vs. Goalkeeper.	44.3 – 57.2	39 - 64
Full-back	13	175.1 ± 4.7 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	172.2 – 178.0	166 - 181	14	70.9 ± 3.7^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	68.8 – 73.0	67 – 81	14	41.2 ± 7.6^a a p < 0.05 vs. Goalkeeper.	36.8 – 45.6	28 - 54
Midfielder	19	178.5 ± 5.9 ^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	175.6 – 181.3	169 - 188	19	77.3 ± 5.5 ^a a p < 0.05 vs. Goalkeeper.	74.7 – 80.0	70 - 91	19	51.8 ± 7.0 ^a a p < 0.05 vs. Goalkeeper. ^c c p < 0.05 vs. Full-back.	48.5 – 55.2	40 - 63
Forward	24	177.2 ± 6.6^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	174.4 – 180.0	164 - 191	24	75.0 ± 8.3^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	71.4 – 78.5	60 - 95	19	44.8 ± 6.5^a a p < 0.05 vs. Goalkeeper.	41.7 – 48.0	35 - 64
Professional
Goalkeeper	13	189.6 ± 2.5	188.1 – 191.1	186 - 194	13	89.6 ± 6.6	85.7 – 93.6	81 - 104	7	67.6 ± 51.5	47.6 – 87.5	47 - 100
Central defender	15	186.6 ± 4.2	184.3 – 188.9	180 - 192	14	85.3 ± 7.0	81.5 – 89.0	75 - 97	8	47.0 ± 10.7	39.3 – 54.7	38 - 69
Full-back	11	177.2 ± 5.0^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	173.9 – 180.6	168 - 184	11	76.7 ± 5.3^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	73.1 – 80.1	70 - 89	7	48.0 ± 9.7	39.0 – 57.0	36 - 67
Midfielder	19	176.8 ± 6.4^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	173.7 – 179.9	169 - 187	19	75.3 ± 6.2^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	72.3 – 78.3	67 - 90	11	52.5 ± 11.2	45.0– 60.0	39 - 74
Forward	14	180.9 ± 5.5^a a p < 0.05 vs. Goalkeeper. ^b b p < 0.05 vs. Central defender.	177.7 – 184.0	172 - 189	14	80.8 ± 7.1^a a p < 0.05 vs. Goalkeeper.	76.7 – 84.9	70 - 92	9	53.9 ± 8.2	47.6 – 60.2	41 - 65

Category	n	Selected (n)	n	Non-Selected	p
Stature (cm)
U15	30	176.4 ± 5.7	103	174.8 ± 5.8	0.130
U17	44	177.5 ± 7.5	154	176.7 ± 7.3	0.625
U20	74	179.7 ± 6.2	61	179.4 ± 7.0	0.782
U23	51	178.2 ± 7.1	16	180.1 ± 5.3	0.257
PRO	47	179.7 ± 6.4	12	182.9 ± 7.3	0.182
Body mass (kg)
U15	30	66.2 ± 6.1	103	64.8 ± 6.2	0.298
U17	44	69.2 ± 7.1	154	68.8 ± 7.4	0.612
U20	74	73.4 ± 7.8	61	73.4 ± 7.6	0.956
U23	52	75.0 ± 7.1	16	79.2 ± 7.8	0.070
PRO	48	79.2 ± 7.0	12	80.4 ± 9.5	0.679
Sum 7 skinfolds (mm)
U15	30	51.1 ± 8.7	103	45.9 ± 9.5^* * p < 0.05 selected vs. non-selected.	0.004
U17	44	52.1 ± 10.4	154	49.8 ± 10.2	0235
U20	74	52.3 ± 11.5	61	49.2 ± 13.4	0.056
U23	45	46.8 ± 8.7	16	47.8 ± 6.7	0.638
PRO	23	51.9 ± 0.2	12	46.5 ± 9.2	0.127

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[1] Correspondence: Guilherme Passos Ramos, Universidade Federal de Minas Gerais. 130, Luís Carlos Prestes Ave, Barra da Tijuca, Rio de Janeiro, RJ, Brazil. 22775055. guilherme.passos@cbf.com.br