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The role of anabolic hormone secretions induced by resistance exercise in muscular adaptations

抗阻运动诱导的合成代谢激素分泌在肌肉适应中的作用

基本信息

批准号：
15500426
负责人：
TAKAMATSU Kaoru
金额：
$ 2.3万
依托单位：
University of Tsukuba
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

This study examined that the impact of anabolic hormone secretions after resistance exercise on muscular adaptations. We initially investigated the relationship between exercise-induced anabolic hormone responses and muscular hypertrophy following long-term of exercise training with two separate experiments (research issue 1). Then, we focused on the influences of acute hormone responses on post-exercise recovery kinetics of muscular function (research issue 2).In research issue 1, the results showed that magnitude of growth hormone(GH) response after resistance exercise was consistent with that of muscular hypertrophy following training period. In addition, brief intra-set rest periods inserted into each set of exercise caused a suppression of GH secretion, and markedly attenuated muscular hypertrophy after long-term exercise training.In research issue 2, the results showed that magnitude of acute GH response after resistance exercise might be associated with post-exercise recovery of maximal muscular strength, suggesting that post-exercise GH secretion has a favorable effect on enhancement of protein synthesis in active muscles.These results suggest that secretions of anabolic hormones, especially that of GH, may be related to both muscular hypertrophy and enhancement of protein synthesis in active muscles during recovery period after a single exercise bout. Therefore, the exercise regimen with marked GH secretion would be effective, when aiming for muscular hypertrophy.

这项研究检查了抗阻运动后合成代谢激素分泌对肌肉适应的影响。我们最初通过两个独立的实验研究了运动引起的合成代谢激素反应与长期运动训练后肌肉肥大之间的关系（研究问题 1）。然后，我们重点关注急性激素反应对运动后肌肉功能恢复动力学的影响（研究问题2）。在研究问题1中，结果表明抗阻运动后生长激素（GH）反应的幅度与训练期后肌肉肥大的幅度一致。此外，每组运动中插入短暂的组内休息时间会抑制GH分泌，并显着减弱长期运动训练后的肌肉肥大。在研究二期中，结果表明，抗阻运动后的急性GH反应幅度可能与运动后最大肌肉力量的恢复有关，这表明运动后GH分泌对增强主动运动中的蛋白质合成具有有利作用。这些结果表明，合成代谢激素（尤其是 GH）的分泌可能与单次运动后恢复期间活跃肌肉的肌肉肥大和蛋白质合成增强有关。因此，当以肌肉肥大为目标时，GH 分泌显着的运动方案将是有效的。