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首页> 外文期刊>Biology of sport / >Individual variation in the cortisol response to a simulated Olympic weightlifting competition is related to changes in future competitive performance
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Individual variation in the cortisol response to a simulated Olympic weightlifting competition is related to changes in future competitive performance

机译：模拟奥林匹克举重比赛中皮质醇的个体差异与未来比赛成绩的变化有关

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摘要

The cortisol (C) and testosterone (T) responses to experimental stress have been linked to sport and health outcomes several days to years later. Here we examined the utility of these biomarkers, taken across a simulated Olympic weightlifting (OWL) competition, as predictors of future competitive performance in young athletes. Seventy junior athletes (46 males, 24 females) participated in a talent identification and development programme that replicated an OWL competition. Performance was indexed by the total load lifted, relative to body mass, with serum changes in C (?C) and (?T) concentrations profiled. We identified each athlete’s best performance in real competitions over two subsequent years via online resources. Hierarchical regression was used to predict changes in competitive performance at 12 (?Total12) and 12-24 months (?Total24). The simulated OWL event promoted a small positive ?C (effect size [ES]=0.3) and ?T (ES=0.5), but with large variation in ?C (-58% to 200%) and ?T (-21% to 71%). Performance improved after 12 (ES=1.5) and 24 months (ES=0.9). The ?C was negatively related to the ?Total12 and ?Total24 when controlling for competitions entered (Rsup2/sup=13-24%). Sensitivity analyses confirmed the ?C link to both outcomes (Rsup2/sup=9%). The serum C and T responses to a simulated OWL competition varied considerably between participants. Their competitive performance improved over the next two years and individual performance trajectories were related to the ?C. Therefore, individual variation in the C responses to a competitive stressor may help forecast the training and/or competitive gain process in young developing athletes.
机译：数天到数年后，皮质醇（C）和睾丸激素（T）对实验压力的反应与运动和健康状况相关。在这里，我们研究了在模拟奥林匹克举重（OWL）比赛中使用的这些生物标记物的效用，它们是年轻运动员未来竞技表现的预测指标。七十名初级运动员（男46名，女24名）参加了一项人才鉴定和发展计划，该计划复制了一项OWL比赛。通过相对于体重提升的总负荷，以及血清中C（ΔC）和（ΔT）浓度的变化来衡量性能。我们通过在线资源在接下来的两年中确定了每位运动员在真实比赛中的最佳表现。层次回归用于预测在<12（？Total12）和12-24个月（？Total24）时竞争绩效的变化。模拟的OWL事件促进了一个小的正ΔC（效应量[ES] = 0.3）和ΔT（ES = 0.5），但是ΔC（-58％至200％）和ΔT（-21％）变化很大。至71％）。 12（ES = 1.5）和24个月（ES = 0.9）后，性能得到改善。当控制进入比赛时，？C与？Total12和？Total24负相关（R 2 = 13-24％）。敏感性分析证实了？C与两种结果均相关（R 2 = 9％）。参与者之间对模拟OWL竞争的血清C和T反应差异很大。在接下来的两年中，他们的竞争表现有所改善，个人表现轨迹与？C有关。因此，C对竞争压力源的个体变化可能有助于预测年轻运动员的训练和/或竞争获得过程。

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