Endurance exercise and leg strength in older women

Quadriceps strength and mass peak in the third decade of life, plateau, and then decline from the fifth decade on. To examine the influence of chronic endurance training and age on lean mass and leg strength, women runners (n = 62, age 43-69 years) and sedentary participants (n = 33, age 43-66 years...

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Bibliographic Details
Published in:Journal of aging and physical activity 2006-01, Vol.14 (1), p.3-11
Main Authors: Tarpenning, Kyle M, Hawkins, Steven A, Marcell, Taylor J, Wiswell, Robert A
Format: Article
Language:English
Subjects:
Adult
Age
Age differences
Age Factors
Aged
Aging
Analysis of Variance
Body Composition
Female
Health risk assessment
Humans
Leg - physiology
Middle Aged
Muscle, Skeletal - physiology
Older women
Physical Endurance
Quadriceps
Running - physiology
Sedentary
Sedentary behavior
Sedentary people
Torque
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Summary:Quadriceps strength and mass peak in the third decade of life, plateau, and then decline from the fifth decade on. To examine the influence of chronic endurance training and age on lean mass and leg strength, women runners (n = 62, age 43-69 years) and sedentary participants (n = 33, age 43-66 years) were divided into 40-, 50-, and 60-year age groups. Absolute isokinetic concentric torque did not differ between runners and sedentary women (97.9 +/- 19.5 and 104.6 +/- 22.7 N . m, respectively, p = .18) but was different between age groups independent of exercise status (107.6 +/- 18.4, 97.1 +/- 19.9, and 90.1 +/- 21.4 N . m, for 40s, 50s, and 60s, respectively, p < .05). Lean body mass also differed by age group (p < .05) but did not change differently among runners and sedentary women. These findings suggest that chronic endurance training might not influence the loss of muscle mass and muscle strength that occur with aging.
ISSN:1063-8652
1543-267X
DOI:10.1123/japa.14.1.3