Table 1.
Anthropometric and performance variables of the study population. Values expressed as M ± SD, except for sex (%-girls).
| International (n=16) | National (n=43) | Regional (n=10) | |
|---|---|---|---|
| Age (years) | 22 ± 3.7†‡ | 14 ± 1.4 | 15 ± .8 |
| Sex | 25 | 44 | 40 |
| Body Height (m) | 183.3 ± 7.7† | 166.7 ± 9.3‡ | 174.7 ± 9.3 |
| Body Mass (kg) | 74.7 ± 10.2†‡ | 51.4 ± 11.1 | 60.5 ± 11.5 |
| Start tennis career (age) | 7 ± 1.4†‡ | 5 ± 1.3 | 6 ± 2.5 |
| Accumulated tennis experience (years) | 15 ± 2.7†‡ | 8 ± 1.9 | 9 ± 2.8 |
| Tennis (hours/week)a | 18.0 ± .0b†‡ | 12.1 ± 3.3 | 10.7 ± 1.9 |
| DRSc | .8 ± .3†‡ | 4.6 ± 1.4 | 4.9 ± 1.1 |
| TAT (s) | 15.1 ± .6†‡ | 17.5 ± 1.2‡ | 16.5 ± 1.1 |
Notes: †Significantly different from national players (p < .05); ‡Significantly different from regional players (p < .05); aHours of tennis training per week; bAll the international players followed the same training program; cDRS = Dynamic Rating System