Table 3. Biological maturity, anthropometric characteristics and ranking positions of youth elite tennis players according to birth distribution.
|
Age Group |
1st Q |
2nd Q |
3rd Q |
4th Q |
P |
Post hoc |
ES ± (90%CI) |
APHV [year] |
U12 |
13.8 ± 0.5 |
13.8 ± 0.3 |
13.4 ± 0.4 |
13.2 ± 0.5 |
.001 |
Q1>Q3;Q4 Q2>Q4 |
1.28 (-.25; .97) |
U13 |
14.2 ± 0.6 |
13.8 ± 0.5 |
13.9 ± 0.5 |
13.7 ± 0.3 |
.358 |
n.d |
.36 (-0.48; 1.41) |
U14 |
13.7 ± 0.8 |
13.8 ± 0.6 |
13.8 ± 0.6 |
14.1 ± 0.5 |
.532 |
n.d. |
.56 (-0.95; 0.11) |
U15 |
13.8 ± 0.6 |
13.9 ± 0.6 |
14.0 ± 0.8 |
13.8 ± 0.7 |
.843 |
n.d. |
.06 (-0.29; 0.39) |
U16 |
13.8 ± 0.5 |
13.8 ± 0.7 |
13.4 ± 0.3 |
13.3 ± 0.6 |
.170 |
n.d. |
.70 (-0.07; 0.77) |
U17 |
14.0 ± 0.6 |
13.9 ± 0.5 |
13.9 ± 0.6 |
13.5 ± 0.4 |
.576 |
n.d. |
.74 (-0.14; 1.08) |
Years from/to APHV [year] |
U12 |
-2.07 ± 0.5 |
-2.3 ± 0.3 |
-2.2 ± 0.4 |
-2.2 ± 0.5 |
.294 |
n.d. |
.31 (-0.21; 0.51) |
U13 |
-1.7 ± 1.7 |
-1.4 ± 0.5 |
-1.7 ± 0.5 |
-1.8± 0.3 |
.731 |
n.d. |
.05 (-0.64; 1.18) |
U14 |
0.0 ± 0.8 |
-0.3 ± 0.6 |
-0.5 ± 0.6 |
-1.1 ± 0.4 |
.001 |
Q1;Q2>Q4 |
1.58 (0.72; 1.75) |
U15 |
0.9 ± 0.6 |
0.5 ± 0.7 |
0.1 ± 0.9 |
0.2 ± 0.6 |
.013 |
Q1>Q3;Q4 |
1.06 (0.30; 1.10) |
U16 |
2.0 ± 0.5 |
1.7 ± 0.7 |
1.8 ± 0.3 |
1.6 ± 0.6 |
.619 |
n.d. |
.60 (-0.12; 0.82) |
U17 |
2.8 ± 0.6 |
2.6 ± 0.5 |
2.3 ± 0.6 |
2.4 ± 0.5 |
.334 |
n.d. |
.53 (-0.42; 0.82) |
Height [cm] |
U12 |
151.0 ± 7.5 |
148.0 ± 5.4 |
150.0 ± 8.0 |
151.2 ± 9.7 |
.641 |
n.d. |
.03 (-6.25; 5.77) |
U13 |
157.3 ± 8.1 |
157.1 ± 8.6 |
155.6 ± 6.4 |
154.0 ± 4.7 |
.604 |
n.d. |
.40 (-1.17: 7.78) |
U14 |
167.7 ± 7.5 |
165.5 ± 6.5 |
164.4 ± 8.1 |
157.5 ± 7.7 |
.024 |
Q1>Q4 |
1.31 (4.55; 15.79) |
U15 |
174.7 ± 6.5 |
170.4 ± 8.2 |
167.2 ± 10.0 |
168.8 ± 7.0 |
.044 |
n.d. |
.88 (1.84; 10.13) |
U16 |
178.2 ± 5.4 |
179.3 ± 8.7 |
179.6 ± 4.9 |
180.5 ± 6.1 |
.898 |
n.d. |
.39 (-7.32; 2.56) |
U17 |
181.2 ± 4.9 |
180.6 ± 3.8 |
178.4 ± 6.2 |
180.0 ± 6.3 |
.677 |
n.d. |
.22 (-4.09; 6.51) |
Body mass [kg] |
U12 |
39.5 ± 5.9 |
36.3 ± 3.0 |
39.8 ± 6.3 |
40.8 ± 5.6 |
.192 |
n.d. |
.22 (-5.77; 3.15) |
U13 |
45.5 ± 6.9 |
43.9 ± 8.7 |
41.3 ± 4.9 |
40.2 ± 3.6 |
.067 |
n.d. |
.73 (1.50; 9.09) |
U14 |
54.0 ± 8.8 |
50.8 ± 6.4 |
49.9 ± 8.4 |
42.2 ± 4.6 |
.009 |
Q1>Q4 |
1.43 (5.82; 17.80) |
U15 |
61.2 ± 8.5 |
57.5 ± 9.4 |
55.0 ± 11.2 |
56.7 ± 8.2 |
.292 |
n.d. |
.52 (-0.75; 9.63) |
U16 |
65.7 ± 5.5 |
64.9 ± 8.0 |
69.7 ± 4.1 |
67.5 ± 9.7 |
.565 |
n.d. |
.22 (-8.16; 4.68) |
U17 |
73.0 ± 6.3 |
67.9 ± 4.8 |
71.4 ± 7.0 |
72.4 ± 9.1 |
.243 |
n.d. |
.09 (-6.43; 7.73) |
Ranking [national U18] |
U12 |
1838.0 ± 742.7 |
1918.0 ± 889.8 |
2255.4 ± 917.1 |
1445.0 ± 932.1 |
.177 |
n.d. |
.49 (-197.8; 983.9) |
U13 |
981.5 ± 463.3 |
1132.8 ± 557.3 |
1195.8 ± 751.7 |
891.0 ± 286.6 |
.341 |
n.d. |
.16 (-167.5; 348.5) |
U14 |
726.1 ± 514.5 |
833.4 ± 927.8 |
887.0 ± 968.3 |
646.3 ± 317.7 |
.888 |
n.d. |
.16 (-274.8; 434.4) |
U15 |
325.7 ± 240.0 |
405.6 ± 542.5 |
367.2 ± 157.3 |
455.7 ± 460.7 |
.799 |
n.d. |
.38 (-339.5; 79.6) |
U16 |
120.2 ± 69.3 |
153.6 ± 112.3 |
360.1 ± 338.9 |
201.6 ± 206.6 |
.104 |
n.d. |
.55 (-203.4; 40.7) |
U17 |
72.8 ± 91.1 |
192.6 ± 372.7 |
152.0 ± 163.6 |
102.5 ± 134.6 |
.664 |
n.d. |
.28 (-133.4; 74.0) |
APHV: estimated age from/to peak height velocity; U12-U17: under 12 to under 17: Q
1-Q
4: first quarter to fourth quarter; ES: effect size; 90%CI: 90% confidence intervals