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Changes in lymphocyte subpopulations after prolonged exercise.

K H Ricken1, T Rieder, G Hauck

  • 1Department of Sports and Performance Medicine, University of Saarland, Saarbrücken, FRG.

International Journal of Sports Medicine
|April 1, 1990
PubMed
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This study examined how endurance exercise affects immune cells in athletes. Results show significant changes in lymphocyte subsets post-exercise, highlighting exercise

Area of Science:

  • Exercise immunology
  • Cellular immunity
  • Sports science

Background:

  • The cellular immune system's response to exercise is complex.
  • Understanding lymphocyte subset dynamics is crucial for athletes' health.
  • Leisure-time sports participation influences immune parameters.

Purpose of the Study:

  • To assess changes in lymphocyte subsets after a standardized endurance exercise test.
  • To evaluate the reproducibility of these immune responses.
  • To investigate short-term immune alterations in physically active males.

Main Methods:

  • 27 healthy male athletes underwent a 60-minute endurance exercise test (63% max performance).
  • Measurements included total T-lymphocytes, B-lymphocytes, O-lymphocytes, T4 (CD4+), and T8 (CD8+) cells.

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  • Reproducibility was checked with a second test (EII) and 24-hour follow-up in a subgroup.

    • Main Results:

    • Significant alterations in lymphocyte subset percentages were observed post-exercise.
    • Specific changes in T-lymphocyte subsets (CD4+, CD8+) were noted.
    • Immune responses showed a degree of reproducibility upon repeat testing.

    Conclusions:

    • Standardized endurance exercise induces measurable changes in cellular immunity.
    • Lymphocyte subset dynamics are sensitive indicators of exercise-related immune modulation.
    • Findings contribute to understanding immune adaptations in athletes.