Abstract

COSTA, Yago Pessoa et al. Beach Volleyball: Temporal Analysis and Endocrine Responses of National Athletes. Motri. [online]. 2020, vol.16, n.4, pp.379-385.  Epub Feb 16, 2021. ISSN 1646-107X.  https://doi.org/10.6063/motricidade.20377.

This study aimed to characterize temporal aspects and verify the acute effect of a beach volleyball game on testosterone, cortisol, and T: C ratio of young athletes. Also, to verify whether the hormonal responses were different between blockers and defenders. Sixteen male athletes of national-level participated (age 17±2.44 years). Each athlete played a game with official rules, being filmed for subsequent analysis. Saliva was used to measure testosterone and cortisol levels and calculate testosterone/cortisol ratio (T: C ratio) using ELISA method. The concentration of these hormones was compared over time (beginning, end of first set, and end of the match) and between functions. Usually, the total match duration was 30min and 49s (± 0.01s), with rallies of 6 seconds (± 01s) and time between rallies of 20 seconds (± 02s). Cortisol showed a linear trend, increasing over time, and T: C ratio showed a quadratic trend, decreasing at the end of the first set and reestablishing at the end of the match. Blockers T: C ratio of pre-post match had a trivial but negative effect (d= −0.198). Approximately 30 minutes of beach volleyball affects the concentration of testosterone, cortisol, and T: C ratio. Besides, blockers seem slightly more physically demanding.

Keywords : Athletes; Biological markers; Biomarkers; Athletic performance.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )