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Related Experiment Videos

Positive adaptations to weight-lifting training in the elderly.

A B Brown1, N McCartney, D G Sale

  • 1Department of Physical Education, McMaster University, Hamilton, Ontario, Canada.

Journal of Applied Physiology (Bethesda, Md. : 1985)
|November 1, 1990
PubMed
Summary

Older men can significantly increase strength and muscle size through weight-lifting. Twelve weeks of training improved maximal strength (1 RM) and muscle hypertrophy, demonstrating that older individuals can still build muscle.

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Area of Science:

  • Gerontology
  • Exercise Physiology
  • Muscle Physiology

Background:

  • Aging is associated with muscle loss and decreased strength.
  • Resistance training is a common intervention to counteract age-related muscle decline.
  • Understanding the specific adaptations to training in older adults is crucial for optimizing health outcomes.

Purpose of the Study:

  • To investigate the effects of 12 weeks of weight-lifting training on strength, muscle size, and contractile properties in elderly males.
  • To compare the adaptations in a trained limb versus a control limb.
  • To assess the potential for muscle hypertrophy and strength gains in older individuals.

Main Methods:

  • 14 elderly males participated in a 12-week weight-lifting program.

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  • Measurements included maximal strength (1 RM), isokinetic torque, isometric strength, and muscle cross-sectional area.
  • Muscle contractile properties were assessed using the interpolated twitch technique.

    • Main Results:

    • Significant increases in 1 RM (48%) and isokinetic torque (8.8%) were observed in the trained arm.
    • Muscle cross-sectional area of elbow flexors increased by 17.4% in the trained arm.
    • Type II fiber area increased significantly more in the trained arm (30.2%) compared to the control arm (10.7%).

    Conclusions:

    • Older individuals possess the capacity for substantial strength improvements and muscle hypertrophy in response to overload training.
    • Weight-lifting training can effectively enhance muscle performance and size in elderly males.
    • These findings support the implementation of resistance training programs for older adults to improve physical function.