The Affects Of Aging On Skeletal Muscle — страница 4
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force-frequency relationship was likely the consequence of the slower muscle contractile properties and could be considered adaptive or compensatory in nature. Hicks and McCartney suggested the change in contractile properties are muscle specific, and the degree and direction so change may depend on both the type and duration of training, as well as the amount of daily usage. Further investigations of the differences between muscle performances measured in the lab environment and in functional everyday situations, are a topic of interest that requires further research. Such studies could provide information useful to physicians and older humans on what to expect with aging and how to adapt to the changes that will enable older adults to continue to live their lives independently. Bibliography References Adams, K., O?Shea, P., & O?Shea, K. (1999). Aging: its effect on strength, power, flexibility, and bone density. National Strength & Conditioning Association, 21(2), 65-77. Hicks, A. L. & McCartney, N. (1996). Gender differences in isometric contractile properties and fatigability in elderly human muscle. Canadian Journal of Applied Physiology, 21 (6), 451-454. Kent-Braun, J. A. & Ng, A. V. (1999). Specific strength and voluntary muscle activation in young and elderly women and men. Journal of American Physiology [On-Line], 87 (1) 22-29. Available: http//www.jap.physiology.org/cgi/content/full/87/1/2 Lindstrom, B., Lexell, J., Gerdle, B., & Downham, D. (1997). Skeletal muscle fatigue and endurance in young and old men and women. Journal of Gerontology: Biological Sciences, 54 (1), B59-B66. Marieb, E. N. (1998). Human Anatomy & Physiology. (4th Ed. ) Don Mills: Addison Wesley Longman. Ng, A. V. & Kent-Braun, J. A. (1999). Slowed muscle contractile properties are not associated with a decreased EMG/Force relationship in older humans. Journal of Gerontology: Biological Sciences, 54A (10), B452-B458.