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Related Experiment Videos

Physical activity and immune function in elderly women

D C Nieman1, D A Henson, G Gusewitch

  • 1Department of Health, Leisure, and Exercise Science, Appalachian State University, Boone, NC 28608.

Medicine and Science in Sports and Exercise
|July 1, 1993
PubMed
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Highly conditioned elderly women show better immune function. Moderate exercise in sedentary elderly women improved fitness but not immune response or upper respiratory tract infection (URTI) rates.

Area of Science:

  • Gerontology
  • Immunology
  • Exercise Physiology

Background:

  • Cardiorespiratory exercise impacts immune function and susceptibility to infections.
  • Elderly populations may experience age-related declines in immune responses.
  • Understanding exercise effects on immunity in older adults is crucial for health.

Purpose of the Study:

  • To investigate the relationship between cardiorespiratory exercise, immune function, and upper respiratory tract infection (URTI) incidence in elderly women.
  • To compare immune function between highly conditioned and sedentary elderly women.
  • To assess the effects of a 12-week exercise intervention on immune markers and URTI in sedentary elderly women.

Main Methods:

  • Randomized controlled trial with 32 sedentary elderly women (67-85 years) assigned to walking or calisthenics groups.

Related Experiment Videos

  • Cross-sectional comparison with 12 highly conditioned elderly women (65-84 years).
  • Intervention involved 30-40 minutes of exercise, 5 days/week for 12 weeks; immune function (NK and T cells) and URTI incidence were measured.

    • Main Results:

    • Highly conditioned women had significantly superior natural killer (NK) and T cell function compared to sedentary women at baseline.
    • Twelve weeks of moderate cardiorespiratory exercise improved VO2max by 12.6% in sedentary women but did not enhance NK or T cell function.
    • URTI incidence was lowest in the highly conditioned group and highest in the calisthenics control group.

    Conclusions:

    • Highly conditioned elderly women possess superior NK and T cell immune function.
    • Moderate cardiorespiratory exercise improves cardiorespiratory fitness in sedentary elderly women but does not enhance immune cell function.
    • Higher levels of physical conditioning are associated with reduced URTI incidence in older women.