Effects of short-term resistance training on muscle strength and morphology in the elderly

David E T O'Neill, Robert E. Thayer, A. Taylor, Tomasz M. Dzialoszynski, Earl G. Noble

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ten moderately active participants (8 women, 2 men; mean age 66.3 ± 1.2 years), engaged in 8 weeks of isotonic knee-extensor resistance training. Afterward, peak torque output (180°/s) and mean power increased 30.8% and 27.2%, respectively, in the experimental limb (EL). A moderate, nonsignificant cross-over training effect was observed in the contralateral untrained limb (CL) for the same measures. Whereas mean fiber cross-sectional area (CSA) was unaltered in the CL by training, Fiber Types I and lIb in the EL displayed increased CSA. However, mean CSAs for all fiber types in the trained EL were no larger (p > .05) than those observed in the CL before or after training. There were no significant changes in muscle-fiber-type composition, the proportion of Type I myosin heavy chain, or Type IIa CSA. These data suggest that short-term resistance training can significantly increase isokinetic peak torque in the elderly, with minimal changes in the histochemical and biochemical parameters examined.

Original languageEnglish
Pages (from-to)312-324
Number of pages13
JournalJournal of Aging and Physical Activity
Volume8
Issue number4
Publication statusPublished - 2000

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Resistance Training
Muscle Strength
Extremities
Torque
Myosin Heavy Chains
Knee
Muscles

Keywords

  • Fiber cross-sectional area
  • Fiber type
  • One-legged training

ASJC Scopus subject areas

  • Geriatrics and Gerontology
  • Rehabilitation
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Orthopedics and Sports Medicine

Cite this

O'Neill, D. E. T., Thayer, R. E., Taylor, A., Dzialoszynski, T. M., & Noble, E. G. (2000). Effects of short-term resistance training on muscle strength and morphology in the elderly. Journal of Aging and Physical Activity, 8(4), 312-324.

Effects of short-term resistance training on muscle strength and morphology in the elderly. / O'Neill, David E T; Thayer, Robert E.; Taylor, A.; Dzialoszynski, Tomasz M.; Noble, Earl G.

In: Journal of Aging and Physical Activity, Vol. 8, No. 4, 2000, p. 312-324.

Research output: Contribution to journalArticle

O'Neill, DET, Thayer, RE, Taylor, A, Dzialoszynski, TM & Noble, EG 2000, 'Effects of short-term resistance training on muscle strength and morphology in the elderly', Journal of Aging and Physical Activity, vol. 8, no. 4, pp. 312-324.
O'Neill, David E T ; Thayer, Robert E. ; Taylor, A. ; Dzialoszynski, Tomasz M. ; Noble, Earl G. / Effects of short-term resistance training on muscle strength and morphology in the elderly. In: Journal of Aging and Physical Activity. 2000 ; Vol. 8, No. 4. pp. 312-324.
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