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Current perspective on exercise immunology.

David C Nieman1

  • 1Department of Health & Exercise Science, PO Box 32071, 111 River Street, Holmes Convocation Center, Appalachian State University, Boone, NC 28608, USA. niemandc@appstate.edu

Current Sports Medicine Reports
|September 10, 2003
PubMed
Summary
This summary is machine-generated.

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Regular moderate exercise boosts immune function, reducing upper respiratory tract infections. However, intense, prolonged exertion can temporarily impair immunity, increasing infection risk.

Area of Science:

  • Exercise Immunology
  • Infectious Disease Prevention

Background:

  • Moderate physical activity is linked to improved immune function and fewer respiratory infections.
  • Intense or prolonged exercise may temporarily suppress immune function, increasing susceptibility to illness.

Purpose of the Study:

  • To summarize the immune system's response to different exercise intensities and durations.
  • To provide guidance on exercise during illness based on immune function.

Main Methods:

  • Review of findings from exercise immunology studies.
  • Analysis of the impact of moderate vs. prolonged heavy exertion on immune markers.
  • Examination of factors influencing infection risk in athletes.

Main Results:

Related Experiment Videos

  • Moderate exercise enhances immune function, reducing illness incidence.
  • Prolonged, heavy exertion (over 90 minutes) can create an "open window" of impaired immunity for 3-72 hours.
  • Factors like travel, poor sleep, and stress amplify infection risk after intense exercise.

    • Conclusions:

    • Near-daily moderate exercise aligns with public health recommendations for immune health.
    • Moderate exercise may be beneficial even with mild (neck-up) illness.
    • Systemic illness warrants rest and gradual return to training to avoid further immune suppression.