优秀男子划船运动员16周训练后下丘脑－垂体激素的变化

通过１６周训练，观察２５名男子划船运动员下丘脑─垂体分泌的５种肽类激素对急性运动的应激及长期训练的适应性变化。其中β名运动员进行ＬＨＲＨ－Ａ垂体机能激发试验，生长激素（ＧＨ）、泌乳素（ＰＲＬ）和β－内非肽（β－ＥＰ）在急性运动中明显升高，其中ＧＨ和β－ＥＰ在１６周训练后基值降低。促黄体素（ＬＨ）和生长抑素（ＳＳ）未见明显改变。在ＬＨＲＨ－Ａ激发试验中，ＬＨ和ＧＨ明显升高，１６周训练后这一反应更明显。各激素安静时无明显相关，运动后低度相关，注射ＬＨＲＨ－Ａ后相关增高。结论：１．对急性运动应激反应明显的激素，其适应性建立也较明显，２．运动过程中动员较彻底的激素之间，互相关联就越密切，符合神经—内分泌网络学说。

The Changes of Hypothalamus-Pituitary Hormones in Elite Oarsmen Before-After 16-week Training

hanges of hypothalamus-pituitary hormones were observed to evaluate their stress and adaptation in 25 oarsmen before and after 16-week training.8 of them performed a LHRH-A test.GH,PRL and Beta-EP levels increased significantly after acute exercise but the basal levels of GH and Beta-EP declined after the 16 weeks.No significant changes occuured in LH and SS. Otherwise,not only LH and GH but also the correlations between the hormones increased significantly in the 8 subjects injected with GnRH-A after acute exercise.Conclusions: 1. The hormones with stress changes to acute exercise may show adaptive responses during the training.2.The correlations between the hormones(post-exercise with GnRH-A>post-exercise without Gn RH-A>resting conditions)show a "reticular effect"among the hormones.