Role of Free Testosterone in Interpreting Physical Performance in Elite Young Brazilian Soccer Players

Autor(es)

Moreira, Alexandre ^[1] ; Mortatti, Arnaldo ^[2] ; Aoki, Marcelo ^[3] ; Arruda, Ademir ^[1] ; Freitas, Camila ^[1] ; Carling, Christopher ^[4]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: PEDIATRIC EXERCISE SCIENCE; v. 25, n. 2, p. 186-197, MAY 2013.
• Citações Web of Science: 13

Resumo

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)

• Processo FAPESP: 10/12489-6 - Carga de treinamento, respostas imuno-hormonais, tolerância ao estresse e inflamação do trato respiratório superior em jovens jogadores de futebol
• Beneficiário: Alexandre Moreira
• Modalidade de apoio: Auxílio à Pesquisa - Regular