Hormonal response to maximal rowing before and after heavy increase in training volume in highly trained male rowers.
Hormonal response to maximal rowing before and after heavy increase in training volume in highly trained male rowers.
复制标题
训练有素的男性赛艇运动员在大幅增加训练量之前和之后对最大赛艇的荷尔蒙反应。
DOI：
10.1016/s0306-4530(98)00031-6
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
T. Jürimäe
中科院分区：
文献类型：
--
作者：
J. Mäestu;J. Jürimäe;T. Jürimäe
目的
本研究的目的是调查 12 名训练有素的男性赛艇运动员在 3 周的高强度训练之前和之后以及 2 周的减量期之后在休息时和最大 2,000 米赛艇测力计测试期间的荷尔蒙反应。
方法
在赛艇性能测试恢复前、恢复后立即和恢复后 30 分钟采集静脉血样本。测量睾酮、皮质醇和性激素结合球蛋白，并计算游离睾酮和游离睾酮：皮质醇比率。
结果
与逐渐减量训练期（8.9 小时 x 周（-1））相比，重训练期（17.5 小时 x 周（-1））的平均训练时间增加了约 100%。 2000米划船测力计的性能参数在3次测试中没有差异。 3 次测试之间的静息睾酮和皮质醇值没有差异。三周的高强度训练导致静息游离睾酮和游离睾酮：皮质醇比率显着降低。两周减量期后，静息游离睾酮和游离睾酮：皮质醇比率增加至训练前水平。在剧烈训练后，测量到的游离睾酮水平的最大运动诱发的增加显着降低（p<0.05）。皮质醇的反应没有变化，游离睾酮：皮质醇比率在剧烈训练后呈下降趋势（p>0.05）。
结论
我们的研究结果表明，运动员适应性下降的第一个迹象是游离睾酮静息水平降低，以及运动引起的游离睾酮浓度最大增加降低。此外，训练有素的男性赛艇运动员在经过足够的逐渐减量期后，每周超过 1,000 分钟的大训练量可以持续 3 周。
AIM
The aim of this study was to investigate the hormonal response at rest and during maximal 2,000 m rowing ergometer test in 12 highly trained male rowers before and after 3 week heavy training, and after 2 week tapering periods.
METHODS
Venous blood samples were obtained before, immediately after and after 30 min of recovery of the rowing performance test. Testosterone, cortisol and sex hormone binding globulin were measured, and free testosterone and the free testosterone: cortisol ratio calculated.
RESULTS
Mean training time was about 100% higher during the heavy training period (17.5 h x week(-1)) compared to the tapering period (8.9 h x week(-1)). Two thousand meter rowing ergometer performance parameters were not different between 3 tests. Resting testosterone and cortisol values were not different between 3 tests. Three week heavy training period induced significant reductions in resting free testosterone and free testosterone: cortisol ratio. Resting free testosterone and free testosterone: cortisol ratio were increased to the pretraining level after 2 week tapering period. A significantly (p<0.05) lower maximal exercise-induced increase of the free testosterone level was measured after heavy training period. The response of cortisol was unchanged and free testosterone: cortisol ratio demonstrated a trend (p>0.05) for a decrease after heavy training period.
CONCLUSIONS
Our findings indicate that the first sign of decreased adaptivity in athletes is a decreased resting level of free testosterone and a lower maximal exercise-induced increase in free testosterone concentration. In addition, heavy training load higher than 1,000 min per week can be sustained for 3 weeks when sufficient tapering period is followed in highly trained male rowers.