Document Detail


Effects of exercise, altitude, and food on blood hormone and metabolite levels.
MedLine Citation:
PMID:  701119     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Measurements of blood glucose and plasma free fatty acids (FFA), thyroxine (T4), free thyroxine (FT4), triiodothyronine (T3), and thyroid-stimulating hormone (TSH) were made on samples taken from fed and fasted human subjects while at rest and immediately after 20 min moderate exercise. Six subjects were studied on successive weeks before (LA1), during (HA1, HA2, HA3), and after (LA2) a 3-wk sojourn at high altitude (3,650 m). The subjects and location were the same as those used for the energy expenditure measurements described in the preceding paper (J. Appl. Physiol.: Respirat. Environ. Exercise Physiol. 45:345--349, 1978). The most marked effect of altitude was to potentiate the rise in FFA due to exercise. This effect was most noticeable in fed subjects during HA1 and HA2. Changes in the plasma levels of the thyroid hormones correlated with the FFA changes and, once again, exercise at altitude caused the greatest increase in circulating levels. Possible causes of the parallel changes in FFA and thyroid hormone levels and their relationship to changes in energy metabolism are discussed.
Authors:
M J Stock; C Chapman; J L Stirling; I T Campbell
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of applied physiology: respiratory, environmental and exercise physiology     Volume:  45     ISSN:  0161-7567     ISO Abbreviation:  J Appl Physiol Respir Environ Exerc Physiol     Publication Date:  1978 Sep 
Date Detail:
Created Date:  1978-12-20     Completed Date:  1978-12-20     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  7801242     Medline TA:  J Appl Physiol Respir Environ Exerc Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  350-4     Citation Subset:  IM; S    
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MeSH Terms
Descriptor/Qualifier:
Acclimatization
Adult
Altitude*
Blood Glucose*
Fatty Acids, Nonesterified / blood
Female
Food*
Hormones / blood*
Humans
Insulin / blood
Male
Physical Exertion*
Thyrotropin / blood
Thyroxine / blood
Chemical
Reg. No./Substance:
0/Blood Glucose; 0/Fatty Acids, Nonesterified; 0/Hormones; 0/Insulin; 7488-70-2/Thyroxine; 9002-71-5/Thyrotropin

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


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