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Background Monitoring technical performance during a soccer match has become an indispensable practice, since the players perform different functions within the tactical system adopted by the team, resulting in specific technical actions that are fully responsive to the individual technical level of each player. Thus, current study aimed to investigate the possible direct and mediating relationship between salivary testosterone and the technical performance of semi-professional footballers during a training game. Methods To characterize the sample, the anthropometric profile, body composition, biological maturation, lower limb power, speed, estimation of maximum oxygen consumption, and physical performance were used. To determine testosterone concentrations, saliva was collected before and after the training game, for subsequent measurement using enzyme immunoassay (ELISA) and Salimetrics Kits. For quantification of technical performance and participation with the ball during the training game, scout software was used from the footage of the training game. The reliability of the technical performance analyses was determined through the repetition test of two attempts (Cohen's Kappa agreement index). Results The direct relationship between post-game testosterone and total participation with the ball in the second half; the direct relationship between the percentage of lean mass with post-game testosterone and an apparent relationship between percentage of lean mass and total participation with the ball from the set of relations mediated by post-game testosterone concentrations. Conclusions The results suggest that testosterone concentrations combined with high levels of lean mass may have a important role in the technical performance and participation with the ball of semi-professional footballers.

Made available in DSpace on 2018-12-11T16:48:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-09-01 Objective To analyze the relationship between physical activity practice and metabolic profile of postmenopausal women under treatment with aromatase inhibitors (AIs) for the treatment of breast cancer. Study design Cross-sectional study, conducted with 101 postmenopausal women (aged 50–80 years). The sample was divided into two groups; group without cancer (GW; n = 65) and breast cancer group treated with AIs (GC; n = 36). Physical activity (PA) was evaluated by questionnaire. Correlations between physical activity and metabolic variables were made by Pearson's correlation coefficient and the magnitude of these relationships by linear regression. Results In GW, there were observed significant inverse correlations between physical activity and VLDL cholesterol (β = −0.036; 95% CI = −0.068; −0.004); triglycerides (β = −0.036; 95% CI = −0.015; −0.002); glycose (β = −0.029; 95% CI = −0.047; −0.012); and C-reactive protein (β = −0.44; 95% CI = −0.085; −0.003). However, for women under treatment of AIs there was no relationship between physical activity and metabolic variables. Conclusion The amount of physical activity practice is inversely related to lipid profile, glucose and C-reactive protein in women without breast cancer. This relation was not observed in the cancer survivors, suggesting that the use of aromatase inhibitors could influence or low intensity of physical activity. Institute of Bioscience Department of Physical Education Sao Paulo State University (UNESP) Center of Studies and Laboratory of Evaluation and Prescription of Motor Activities (CELAPAM) Department of Physical Education Sao Paulo State University (UNESP) Department of Physical Education Federal University of Amazonas (UFAM) Group of Study in Physical Activity and Health Sao Paulo State University (UNESP) Institute of Bioscience Department of Physical Education Sao Paulo State University (UNESP) Center of Studies and Laboratory of Evaluation and Prescription of Motor Activities (CELAPAM) Department of Physical Education Sao Paulo State University (UNESP) Group of Study in Physical Activity and Health Sao Paulo State University (UNESP)