HORMONAL RESPONSES TO RESISTANCE EXERCISE IN LONG-TERM TRAINED AND UNTRAINED MIDDLE-AGED MEN
HORMONAL RESPONSES TO RESISTANCE EXERCISE IN LONG-TERM TRAINED AND UNTRAINED MIDDLE-AGED MEN
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DOI：
10.1519/jsc.0b013e31817bd45d
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发表时间：
2008-09-01
影响因子：
3.2
通讯作者：
Martins Kruel, Luiz Fernando
中科院分区：
文献类型：
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作者：
Cadore, Eduardo Lusa;Rodrigues Lhullier, Francisco Luiz;Martins Kruel, Luiz Fernando
卡多尔 (EL)、卢利尔 (FLR)、布伦塔诺 (MA)、席尔瓦 (EM)、安布罗西尼 (MB)、斯皮内利 (R)、席尔瓦 (RF) 和克鲁尔 (LFM)。长期训练和未训练的中年男性对抗阻运动的荷尔蒙反应。 J Strength Cond Res 22(5): 1617-1624, 2008 - 这项横断面研究比较了受过训练和未经训练的男性对阻力运动的激素反应，以调查中年男性内分泌系统对长期力量训练的适应。本研究招募了 21 名中年男性，并将其分为力量训练组 (SG) (n = 10) 和未训练组 (UG) (n = 11)。在 SG 中，参与者进行了至少 3 年的肌肥大力量训练。通过 1 次最大重复 (1RM) 测试来测量上半身和下半身的肌肉力量。在休息时和多组超级组力量训练方案 (SSTP) 后采集血样，强度为 1RM 值的 75%。利用这些血液样本，测定了总睾酮（TT）、游离睾酮（FT）、脱氢表雄酮（DHEA）、皮质醇和性激素结合球蛋白（SHBG）的水平。此外，还计算了 TT 与皮质醇的比率以及 TT 与 SHBG 的比率。休息时各组之间的 TT、FT、DHEA、皮质醇、TT 与 SHBG 比率以及 TT 与皮质醇比率的激素值没有差异。 SSTP 后，UG 中 TT、FT、DHEA 和皮质醇水平以及 TT 与 SHBG 比率有所增加，但 SG 中仅 FT 增加。训练结束后，SG 的 TT 与 SHBG 比率值较低。这些结果表明，长期训练的中年男性对抗阻运动的合成代谢和分解代谢激素反应存在变化，受过训练的受试者表现出较低的激素值反应。长期训练的男性似乎需要更高强度的训练，至少与日常锻炼相似，才能刺激更大的激素反应。
Cadore, EL, Lhullier, FLR, Brentano, MA, Silva, EM, Ambrosini, MB, Spinelli, R, Silva, RF, and Kruel, LFM. Hormonal responses to resistance exercise in long-term trained and untrained middle-aged men. J Strength Cond Res 22(5): 1617-1624, 2008-This cross-sectional study compared hormonal responses to resistance exercise between trained and untrained men to investigate the adaptations of the endocrine system to long-term strength training in middle-aged men. Twenty-one middle-aged men were recruited for this study and matched into a strength-trained group (SG) (n = 10) and an untrained group (UG) (n = 11). In the SG, the individuals had practiced strength training for hypertrophy for at least 3 years. Upper-and lower-body muscle strength was measured with a 1 repetition maximum (1RM) test. Blood samples were collected at rest and after multiple sets of a superset strength training protocol (SSTP), with an intensity of 75% of 1RM values. With these blood samples, the levels of total testosterone (TT), free testosterone (FT), dehydroepiandrosterone (DHEA), cortisol, and sex hormone-binding globulin (SHBG) were determined. In addition, the TT-to-cortisol ratio and TT-to-SHBG ratio were calculated. There was no difference at rest between groups in hormonal values for TT, FT, DHEA, cortisol, the TT-to-SHBG ratio, and the TT-to-cortisol ratio. There were increases after SSTP in the levels of TT, FT, DHEA, and cortisol and the TT-to-SHBG ratio in the UG, but only FT increased in the SG. The SG demonstrated lower values in the TT-to-SHBG ratio after the training session. These results suggest the presence of alterations in anabolic and catabolic hormonal responses to resistance exercise in long-term trained middle-aged men, with the trained subjects demonstrating lower responsiveness in the hormone values. Long-term trained men seem to require a higher volume of training, at least similar to their daily workout, to stimulate greater hormone responses.