Document Detail


Alterations in the morning plasma levels of hormones and the endocrine responses to bicycle exercise during prolonged strain. The significance of energy and sleep deprivation.
MedLine Citation:
PMID:  1872119     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The relative significance of physical exercise, energy and sleep deprivation for the morning levels of hormones and the endocrine response to short-term bicycle exercise were investigated in 24 male cadets during a 5-day military training course. Significant increases in the morning levels of noradrenaline, adrenaline, and dopamine, and a decrease in PRL were ascribed mainly to physical strain. Cortisol and hGH increased, whereas insulin and glucose decreased mainly due to energy deficiency. Pulse rate after the bicycle test was unchanged and similar in all groups in spite of increased catecholamine responses. The increased catecholamine response was mainly due to physical strain. The cortisol response to the bicycle test was increased in all groups, and energy deficiency caused slower postexercise recovery. The incremental hGH response to the exercise test was unchanged in the energy-deficient subjects but abolished in the well-fed subjects. The results suggest that the endocrine responses during long-lasting exhausting strain were mainly due to physical exertion and energy deficiency, whereas sleep deprivation did not play any major role.
Authors:
P K Opstad
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta endocrinologica     Volume:  125     ISSN:  0001-5598     ISO Abbreviation:  Acta Endocrinol.     Publication Date:  1991 Jul 
Date Detail:
Created Date:  1991-09-13     Completed Date:  1991-09-13     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0370312     Medline TA:  Acta Endocrinol (Copenh)     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  14-22     Citation Subset:  IM    
Affiliation:
Norwegian Defence Research Establishment, Kjeller.
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MeSH Terms
Descriptor/Qualifier:
Adult
Bicycling
Blood Glucose / analysis
Catecholamines / blood
Circadian Rhythm*
Endocrine Glands / physiopathology*
Energy Metabolism*
Exercise*
Growth Hormone / blood
Hormones / blood*
Humans
Hydrocortisone / blood
Insulin / blood
Male
Prolactin / blood
Pulse
Sleep Deprivation / physiology*
Stress, Physiological / blood,  physiopathology*
Chemical
Reg. No./Substance:
0/Blood Glucose; 0/Catecholamines; 0/Hormones; 11061-68-0/Insulin; 50-23-7/Hydrocortisone; 9002-62-4/Prolactin; 9002-72-6/Growth Hormone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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