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Can exercise training improve immune function in the aged?

Jeffrey A Woods1, Thomas W Lowder, K Todd Keylock

  • 1Department of Kinesiology, University of Illinois at Urbana/Champaign, 906 South Goodwin Avenue, Urbana, Illinois 61801, USA. woods1@uiuc.edu

Annals of the New York Academy of Sciences
|April 27, 2002
PubMed
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Moderate exercise may enhance immune function in older adults, unlike other interventions. More research is needed to confirm exercise benefits for elderly immune health.

Area of Science:

  • Immunology
  • Gerontology
  • Exercise Science

Background:

  • Aging leads to immune decline, increasing disease susceptibility.
  • Current interventions to boost elderly immune function are often ineffective or have side effects.
  • Behavioral therapies, like exercise, are under-researched for immune enhancement in the aged.

Purpose of the Study:

  • To review the impact of exercise on immune function in the elderly.
  • To evaluate the effectiveness of different study designs in assessing exercise and immunity.

Main Methods:

  • Cross-sectional studies comparing active versus sedentary older adults.
  • Longitudinal studies observing changes in immune function over time.
  • Animal studies investigating exercise effects on immune responses.

Related Experiment Videos

Main Results:

  • Cross-sectional and animal studies suggest moderate exercise improves T cell responses.
  • Human prospective studies show inconsistent immune function improvements in older adults.
  • Limitations in human studies include small sample sizes, short durations, and limited immune measures.

Conclusions:

  • Moderate exercise shows potential for improving immune function in the elderly.
  • Further systematic, well-designed human studies are crucial to confirm these benefits.
  • Exercise may offer a practical, non-pharmacological approach to support aging immune systems.