Endurance training in females: changes in beta-endorphin and ACTH

International Journal of Sports Medicine
H C HeitkampH H Dickhuth

Abstract

Previous results from endurance training in women have been discrepant in regard to influences on basal and maximum adrenocorticotropin (ACTH) and beta-endorphin (beta-EP) concentrations before and after exhaustive exercise. A group of 23 untrained young women ran 3 times a week for 30 min at an individual specific intensity corresponding to their respective anaerobic threshold, derived from the lactate performance curve obtained from prior treadmill testing. ACTH and beta-EP were measured at rest, as well as 5 and 30 min after exhaustive progressive spiroergometric treadmill running, both before and after the 8 week endurance training program. Basal beta-EP did not change after training, but less elevated concentrations were measured both 5 (p < 0.05) and 30 min (p < 0.05) after exercise, after the training program. In contrast, the resting concentration of ACTH increased significantly; the respective maximum concentration was less elevated after 5 min and much less elevated 30 min after the exercise (p < 0.05). Positive correlations were found after the exhaustive exercise between beta-EP and ACTH, as well as between maximum lactate and ACTH. Training was associated with significant changes in maximum running speed (p < 0.01)...Continue Reading

Citations

Mar 4, 2000·Peptides·A L VaccarinoA J Kastin
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Nov 1, 2007·The Veterinary Quarterly·E de Graaf-RoelfsemaJ H van der Kolk
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Dec 31, 2016·Sports Medicine·Osnat Hakimi, Luiz-Claudio Cameron
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