Document Detail


Genetic influence on daily wheel running activity level.
MedLine Citation:
PMID:  15383638     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This project was designed to determine the genetic (between-strain) and environmental (within-strain) variance in daily running wheel activity level in inbred mice. Five male and five female mice, 9.7-15.3 wk old, from each of 13 strains (A/J, AKR/J, BALB/cJ, C3H/HeJ, C57Bl/6J, C57L/J, C3Heb/FeJ, CBA/J, DBA/2J, SWR/J, MRL/MpJ, SPRET/Ei, and CAST/Ei) as well as five female NZB/BinJ mice were housed individually. A running wheel in each cage was interfaced with a magnetic sensor to measure total daily distance and exercise time for each animal every 24 h for 21 consecutive days (3 wk). Average daily distance (km), duration (min), and velocity (m/min) for each strain was then calculated. Significant interstrain differences in average daily distance (P < 0.001), average daily exercise duration (P < 0.0001), and average daily exercise velocity (P < 0.0001) were found, with C57L/J mice running farther and faster than the other strains. Sex was a significant factor in daily running wheel activity, with female mice running an average of 20% farther (P = 0.01) and 38% faster (P < 0.0001) than male mice. The male mice ran 15% longer duration on a daily basis (P = 0.0091). Weight was only associated with exercise velocity in the female mice, but this relationship was not significant when subdivided by strain. Broad-sense heritability estimates on the physical activity differed by sex (for distance, male 31-48% and female 12-22%; for duration, male 44-61% and female 12-21%; for velocity, male 49-66% and female 44-61%). In conclusion, these data indicate that daily running wheel activity level in mice is significantly affected by genetic background and sex.
Authors:
J Timothy Lightfoot; Michael J Turner; Meredith Daves; Anna Vordermark; Steven R Kleeberger
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, P.H.S.     Date:  2004-09-21
Journal Detail:
Title:  Physiological genomics     Volume:  19     ISSN:  1531-2267     ISO Abbreviation:  Physiol. Genomics     Publication Date:  2004 Nov 
Date Detail:
Created Date:  2004-11-19     Completed Date:  2005-09-07     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  9815683     Medline TA:  Physiol Genomics     Country:  United States    
Other Details:
Languages:  eng     Pagination:  270-6     Citation Subset:  IM    
Affiliation:
Department of Kinesiology, University of North Carolina Charlotte, Charlotte 28223, USA. jtlightf@email.uncc.edu <jtlightf@email.uncc.edu>
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MeSH Terms
Descriptor/Qualifier:
Animals
Body Weight / genetics
Female
Male
Mice
Mice, Inbred AKR
Mice, Inbred BALB C
Mice, Inbred C3H
Mice, Inbred C57BL
Mice, Inbred CBA
Mice, Inbred NZB
Motor Activity / genetics*
Physical Endurance / genetics
Sex Factors
Species Specificity
Time Factors
Grant Support
ID/Acronym/Agency:
AG-22417/AG/NIA NIH HHS; DK-61635/DK/NIDDK NIH HHS

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


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