| Full text | |
| Author(s): |
Moreira, Alexandre
[1]
;
Mortatti, Arnaldo
[2]
;
Aoki, Marcelo
[3]
;
Arruda, Ademir
[1]
;
Freitas, Camila
[1]
;
Carling, Christopher
[4]
Total Authors: 6
|
| Affiliation: | [1] Univ Sao Paulo, Sch Phys Educ & Sport, Sao Paulo - Brazil
[2] Univ Fed Ceara, Phys Educ & Sports Inst, Fortaleza, Ceara - Brazil
[3] Univ Sao Paulo, Sch Arts Sci & Humanities, Sao Paulo - Brazil
[4] LOSC Lille Metropole Football Club, EMSP, Camphin En Pevele - France
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | PEDIATRIC EXERCISE SCIENCE; v. 25, n. 2, p. 186-197, MAY 2013. |
| Web of Science Citations: | 13 |
| Abstract | |
This study investigated the contribution of salivary testosterone (sT) concentration, years from peak height velocity (YPHV) and height by body mass interaction on jumping performance (Countermovement jump; CMJ) and aerobic fitness (Yo-Yo intermittent endurance test, level 1) in young elite soccer players. Forty-five participants (age: 12.5 +/- 0.5y; body mass: 48.6 +/- 10.2kg, height: 155.7 +/- 10.0cm) belonging to a top level Brazilian soccer club were evaluated at four time points across a single semester. None of the assessed players had reached PHV. The data from the four evaluations were averaged and multiple linear regression analysis conducted. For CMJ, the model explained 42.88% of the variance (R-2 = 42.88; p < .000); sT concentration was the primary contributor (R-2 = 32.84) and the YPHV contributed 9.95% of the variance. The model explained 28.50% (p < .000) of the variance in Yo-Yo. The sT was the primary and single significant contributor (R-2 = 21.32). A significant difference was noted between high and low testosterone groups divided a posteriori to CMJ performance (t = 3.35; p = .001). These results suggest an important role for hormonal status in interpreting physical performance in preadolescent soccer players. (AU) | |
| FAPESP's process: | 10/12489-6 - Training load, hormonal and immune responses, stress tolerance and upper respiratory tract infections in young soccer players |
| Grantee: | Alexandre Moreira |
| Support Opportunities: | Regular Research Grants |