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Acute intensive interval training and T-lymphocyte function.

R W Fry1, A R Morton, D Keast

  • 1University of Western Australia, Nedlands.

Medicine and Science in Sports and Exercise
|March 1, 1992
PubMed
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Acute exercise, including upper-body activities like kayaking, temporarily suppresses immune function. This immune suppression, specifically reduced lymphocyte proliferation, resolves within 2 hours post-exercise, regardless of fitness level.

Area of Science:

  • Exercise Immunology
  • Sports Science
  • Cellular Immunology

Background:

  • Acute exercise is linked to immune suppression, but findings vary due to uncontrolled exercise intensity and duration.
  • Previous research primarily focused on lower-body exercise and immediate post-exercise effects, neglecting recovery time course.

Purpose of the Study:

  • To investigate the in vitro immune responses to acute anaerobic upper-body exercise (kayaking) and compare them to lower-body exercise.
  • To determine the time course of immune recovery following acute anaerobic exercise over a 24-hour period.
  • To examine the influence of fitness levels on these immune responses.

Main Methods:

  • Two groups of athletes (runners and kayakers) with varying fitness levels underwent interval training.

Related Experiment Videos

  • In vitro immune responses of leukocytes were analyzed following anaerobic upper-body and lower-body exercise.
  • Lymphocyte proliferative response to a T-cell mitogen (ConA) was measured over a 24-hour recovery period.

    • Main Results:

    • Upper-body anaerobic exercise (kayaking) induced in vitro immune responses similar to those observed with lower-body exercise.
    • No significant differences in immune response were found between low-fitness and high-fitness subjects.
    • A transient reduction in lymphocyte proliferative response immediately after exercise returned to normal levels within 2 hours of recovery.

    Conclusions:

    • Acute anaerobic exercise, whether upper or lower body, elicits transient immune suppression.
    • Immune recovery is rapid, with lymphocyte proliferation normalizing within 2 hours post-exercise.
    • Fitness level does not appear to significantly alter the acute immune response or recovery kinetics to anaerobic exercise.