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Record 1 of 92
Spontaneous running activity in male rats - Effect of age
Author and Affiliation:
Mondon, C. E.(NASA Ames Research Center, Moffett Field, CA, United States)
Dolkas, C. B.(NASA Ames Research Center, Moffett Field, CA, United States)
Sims, C.(NASA Ames Research Center, Moffett Field, CA, United States)
Reaven, G. M.(NASA Ames Research Center, Moffett Field)
Abstract: Variations in the intensity and the patterns of spontaneous running activity in wheel cages were studied in male rats aged 7 weeks to one year. Daily running records were obtained for periods of 12 mo, and 24-hour recordings were made for selected runners in order to study variations in running activity during the day. The data indicate that for rats running over two miles/day, the maximum running intensity can be divided into two groups: a group of high achievers running 8 miles/day; and a group of moderate achievers running 4.8 miles/day. For both groups spontaneous activity reached a maximum after 4-5 weeks. An hourly pattern of running activity during the day was identified in rats of increasing age who averaged 9.0, 4.5, 2.6, and 1.2 miles/day, respectively. Progressive losses were observed in both the speed and the duration of spontaneous running as the rats increased in age, with the intensity of exercise falling below 2 miles/day after 7-8 months of age.
Publication Date: May 01, 1985
Document ID:
(Acquired Nov 28, 1995)
Accession Number: 85A34364
Document Type: Journal Article
Publication Information: Journal of Applied Physiology (ISSN 0161-7567); 58; 1553-155
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Stanford Univ.; CA, United States
Veterans Administration Hospital; Palo Alto, CA, United States
Description: 5p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
Imprint And Other Notes: Journal of Applied Physiology (ISSN 0161-7567), vol. 58, May 1985, p. 1553-1557. Research supported by the U.S. Veterans Administration and NASA.
Miscellaneous Notes: Research supported by the U.S. Veterans Administration and NASA
Availability Source: Other Sources
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