Hypothalamic-pituitary-adrenal and -gonadal axis function after exercise in sedentary and endurance trained elderly males |
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| Authors: | Heiko K. Strüder Wildor Hollmann Petra Platen Richard Rost Helmut Weicker Karl Weber |
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| Affiliation: | (1) Institute of Sports Games, German Sport University, Carl-Diem-Weg 6, D-50933 Cologne, Germany, DE;(2) Institute of Cardiology and Sports Medicine, German Sport University, Carl-Diem-Weg 6, D-50933 Cologne, Germany, DE;(3) Department of Pathophysiology and Sports Medicine, Ruprecht-Karls-University, D-69117 Heidelberg, Germany, DE |
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| Abstract: | The aim of this study was to investigate hypothalamic-pituitary-adrenal (HPAA) and -gonadal (HPGA) axis responses to post-exercise (30 min at 65% V˙O2max) combined corticotrophin, luteinizing hormone and thyrotrophin releasing hormone challenge (0.7 μg/kg body mass) in elderly distance runners (DR; age: 68.9 ± 4.2 year) and sedentary individuals (SI; age: 69.1 ± 2.6 year). Plasma cortisol, growth hormone, prolactin, luteinizing hormone, follicle stimulating hormone and total testosterone (T) concentrations pre- and post-exercise as well as in response to stimulation did not differ between DR and SI. Plasma adrenocorticotropic hormone returned to pre-exercise level in DR 60 min and in SI 90 min post-stimulation. Free T was lower in DR at all time points. Our results do not support the notion of altered releasing hormone-stimulable HPAA and HPGA synthesis-secretion capacity in elderly males after endurance training. Accepted: 18 November 1997 |
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| Keywords: | Aging Releasing hormones Reproductive system Endurance training |
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