Journals of Gerontology Series A: Biological Sciences and Medical Sciences Large Type Edition
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The Journals of Gerontology Series A: Biological Sciences and Medical Sciences 57:B193-B197 (2002)
© 2002 The Gerontological Society of America

Physical Performance and Longevity in Aged Rats

Christy S. Cartera, William E. Sonntagb, Graziano Ondera and Marco Pahora

a Departments of Internal Medicine, Section on Gerontology and Geriatrics
b Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, North Carolina

Christy S. Carter, Wake Forest University School of Medicine, PTCRC Building, Winston-Salem, NC 27157 E-mail: chrcarte@wfubmc.edu.

Decision Editor: John A. Faulkner, PhD

In humans, physical performance declines with increasing age, and in nondisabled older persons, scores on standardized performance measures, such as walking speed, repeated chair stands, and a balance test, predict the incidence of disability and reduced longevity. Here we show in aged rats (24-month-old Brown Norway x Fischer 344 male rats; n = 48) that conceptually similar performance measures, such as swimming speed and an inclined plane procedure, can be assessed longitudinally, and that over 6 months of follow-up from the age of 24 to 30 months, performance declines progressively with increasing age. High baseline performance scores predict long-term longevity, a relationship that is also found in humans. The application of standardized physical performance measures to a variety of animal models of aging may help to define similarities between species in the underlying mechanisms of the age-related decline in performance, disability, and longevity.




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C. S. Carter, G. Onder, S. B. Kritchevsky, and M. Pahor
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