Table 1. Mixed longitudinal study design with numbers of rhythmic gymnasts (untrained controls) measured at each test year by age and biological maturation categories.
| Test year |
|
1st year |
2nd year |
3rd year |
4th year |
Total |
| Age |
|
| 7 |
14(4) |
|
|
|
14(4) |
| 8 |
20(23) |
11(2) |
|
|
31(25) |
| 9 |
11(17) |
16(20) |
10(2) |
|
37(39) |
| 10 |
|
12(17) |
16(20) |
9(2) |
37(39) |
| 11 |
|
|
10(14) |
17(19) |
27(33) |
| 12 |
|
|
|
9(14) |
9(14) |
| Total |
45(44) |
39(39) |
36(36) |
35(35) |
155(154) |
| Tanner stage |
|
| I |
45(44) |
39(30) |
32(10) |
5(4) |
121(88) |
| II |
|
0(9) |
4(19) |
26(17) |
30(45) |
| III |
|
|
0(6) |
4(10) |
4(16) |
| IV |
|
|
0(1) |
0(4) |
0(5) |
| Total |
45(44) |
39(39) |
36(36) |
35(35) |
155(154) |
