Document Detail

Glucocorticoids, aerobic physiology, and locomotor behavior in california mice *.
MedLine Citation:
PMID:  23099464     Owner:  NLM     Status:  In-Data-Review    
Abstract The glucocorticoid hormones corticosterone (CORT) and cortisol influence numerous physiological, morphological, and behavioral functions. However, few studies have addressed possible relationships between individual differences in glucocorticoid concentrations and whole-animal performance or metabolism. Because CORT is important in glucose regulation and energy metabolism and can influence activity levels, we hypothesized that individual variation in baseline circulating CORT levels would correlate with individual differences in energy expenditure (routine and maximal), aerobic physiology, voluntary exercise on wheels, and organ masses. We tested this hypothesis in the California mouse (Peromyscus californicus). We collected data from 54 adult, colony-bred mice on baseline CORT levels (measured near both the circadian peak and the circadian trough), voluntary wheel running and its energetic costs, maximal oxygen consumption during forced treadmill exercise ([Formula: see text]), basal metabolic rate, and relative organ masses. We found surprisingly few statistically significant relationships among CORT, energy metabolism, behavior, and organ masses, and these relationships appeared to differ between males and females. These findings suggest that individual differences in baseline CORT levels are not an important determinant of voluntary activity levels or aerobic performance in California mice.
Elizabeth M Dlugosz; Breanna N Harris; Wendy Saltzman; Mark A Chappell
Related Documents :
15065644 - Validity of the adaptive filter for accurate measurement of cardiac output in impedance...
1176414 - Renal blood flow distribution during steady-state exercise and exhaustion in conscious ...
17535034 - Cardiovascular parameters during submaximal exercise following submucous administration...
15845614 - Heterozygous disruption of serca2a is not associated with impairment of cardiac perform...
12133864 - Evidence for sympatholysis at the onset of forearm exercise.
22723614 - A multi-modal intervention in management of left ventricular assist device outpatients:...
Publication Detail:
Type:  Journal Article     Date:  2012-09-17
Journal Detail:
Title:  Physiological and biochemical zoology : PBZ     Volume:  85     ISSN:  1537-5293     ISO Abbreviation:  Physiol. Biochem. Zool.     Publication Date:    2012 Nov-Dec
Date Detail:
Created Date:  2012-10-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100883369     Medline TA:  Physiol Biochem Zool     Country:  United States    
Other Details:
Languages:  eng     Pagination:  671-83     Citation Subset:  IM    
Department of Biology and Graduate Program in Evolution, Ecology, and Organismal Biology, University of California, Riverside, California 92521.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

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

Previous Document:  Morphological and Physiological Idiosyncrasies Lead to Interindividual Variation in Flight Metabolic...
Next Document:  As the Sword Grows: Individual Variation and Ontogenetic Effects of a Sexually Selected Trait on Loc...